DTC P1604: Startability Malfunction [11/2021 - ]: Procedure

1. Turn the ignition switch to ON.
2. Using GTS or a general scan tool, read the DTC of [Engine].

   Powertrain > Engine Control System > Trouble Codes 

   Is DTC other than P1604 displayed? (Current code)

   Result	Proceed to
   Yes (Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)".)	A
   No	B

Result: 

A 

CHECK APPROPRIATE DTC 

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 06/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2022 - 12/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2023 - 10/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2024 - ]

Result: 

B 

See step  2

1. Check the immobiliser.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Repair the immobiliser.)	B

Result: 

B 

REPAIR IMMOBILISER 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

Result: 

A 

See step  3

1. Check for the condition of fault occurrence.

   Is it possible to reproduce the faulty phenomenon or to identify the faulty condition?

   Result	Proceed to
   Yes	A
   No	B

Result: 

A 

See step  30

Result: 

B 

See step  4

1. Turn the ignition switch to ON.
2. Using GTS, read the values in [Engine Speed] and [Control module voltage].

   Powertrain > Engine Control System > DTC(P1604) > Freeze Frame Data 

   Tester Display
   Engine Speed
   Control module voltage

   Is the value of [Engine Speed] 0 RPM?

   Result	Proceed to
   Yes (When the value of [Control module voltage] is less than 5 V)	A
   Yes (When the value of [Control module voltage] is 5 V or higher)	B
   No (When the value of [Engine Speed] is less than 250 RPM)	C
   No (When the value of [Engine Speed] is 250 RPM or more)	D

Result: 

A 

CHECK BATTERY 

Refer to ON-VEHICLE INSPECTION [11/2021 - ]

Result: 

C 

See step  12

Result: 

D 

See step  20

Result: 

B 

See step  5

1. Using GTS, read the value in [Control module voltage].

   Powertrain > Engine Control System > DTC(P1604) > Freeze Frame Data 

   Tester Display
   Control module voltage

   Is the value of [Control module voltage] less than 9 V?

   Result	Proceed to
   Yes (It is possible that the engine friction is too large. Check the engine.)	A
   No (When the value of [Control module voltage] changes in any one of Freeze Frame Data)	B
   No (When the value of [Control module voltage] does not change in all Freeze Frame Data)	C

Result: 

A 

CHECK ENGINE 

It is possible that the engine friction is too large. Check the engine.

Refer to PROBLEM SYMPTOMS TABLE [11/2021 - ]

Result: 

C 

CHECK STARTER SIGNAL CIRCUIT 

Refer to Starter Signal Circuit [11/2021 - ]

Result: 

B 

See step  6

1. Check the installation condition of crankshaft position sensor.

   Is the crankshaft position sensor installed correctly?

   Result	Proceed to
   Yes	A
   No (Install the crankshaft position sensor correctly.)	B

Result: 

B 

INSTALL CRANKSHAFT POSITION SENSOR CORRECTLY 

Refer to INSTALLATION [11/2021 - ]

Result: 

A 

See step  7

1. Check the crankshaft position sensor.

   Refer to DTC P0335: Crankshaft Position Sensor "A" Circuit [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the crankshaft position sensor.)	B

Result: 

B 

REPLACE CRANKSHAFT POSITION SENSOR 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  8

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the crankshaft position sensor.
3. Turn the ignition switch to ON.
4. Measure the voltage between crankshaft position sensor connector and engine ground.

   Connector & terminal

   B5-3 - Engine ground

   Is the voltage 4.5 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair open or short circuit to ground in the harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  9

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and crankshaft position sensor connector.

   Connector & terminal

   B1-66 (CRADIGT) - B5-1

   B1-68 (AVSSCRA) - B5-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between the ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  10

1. Measure the resistance between crankshaft position sensor connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B5-1 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  11

1. Replace the crankshaft position sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No (Replace the ECM.)	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

REPLACE ECM 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to ON.
2. Using GTS, read the values in [Coolant Temp.], [Ambient Temperature] and [Fuel Pump Duty].

   Powertrain > Engine Control System > DTC(P1604) > Freeze Frame Data 

   Tester Display
   Coolant Temp.
   Ambient Temperature
   Fuel Pump Duty

   Is the value of [Coolant Temp.] 120°C (248°F) or more? Or is the value of [Coolant Temp.] 15°C (27°F) or more lower than that of [Ambient Temperature]?

   Result	Proceed to
   Yes (Replace the engine coolant temperature sensor.)	A
   No (When the value of [Fuel Pump Duty] is 60% or more)	B
   No (When the value of [Fuel Pump Duty] is less than 60%)	C

Result: 

A 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

Refer to REMOVAL [11/2021 - ]

Result: 

C 

CHECK FUEL PUMP CONTROL CIRCUIT 

Refer to Fuel Pump Control Circuit [11/2021 - ]

Result: 

B 

See step  13

1. Using GTS, select [Fuel Pump Relay] of [Active Test].

   Powertrain > Engine Control System > Active Test 

   Tester Display
   Fuel Pump Relay

2. Check if operating sound occurs in the fuel suction tube with pump and gauge assembly according to ON/OFF switching operation.

   Does the fuel suction tube with pump and gauge assembly emit operating sound?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  19

Result: 

A 

See step  14

1. Check if any foreign matters such as iron powder exist in the fuel tank assembly.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   Is there any foreign matter in the fuel tank assembly?

   Result	Proceed to
   Yes (Remove foreign matter from the fuel tank assembly.)	A
   No	B

Result: 

A 

REMOVE FOREIGN MATTER FROM FUEL TANK 

Result: 

B 

See step  15

1. Check the fuel pressure.

   Refer to PROCEDURE - Step 2

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Check the fuel suction tube with pump and gauge assembly and fuel delivery line.)	B

Result: 

B 

CHECK FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY AND FUEL DELIVERY LINE 

Refer to INSPECTION [11/2021 - ]

Result: 

A 

See step  16

1. Turn the ignition switch to ON.
2. Using GTS, read the values in [Fuel Rail Pressure A] and [Commanded Fuel Rail Pressure A].

   Powertrain > Engine Control System > DTC(P1604) > Freeze Frame Data 

   Tester Display
   Fuel Rail Pressure A
   Commanded Fuel Rail Pressure A

   Is the value in [Fuel Rail Pressure A] synchronized with the one in [Commanded Fuel Rail Pressure A] in all Freeze Frame Data?

   Result	Proceed to
   Yes	A
   No (Check the fuel (engine room side) pump assembly.)	B

Result: 

B 

CHECK FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 

Refer to INSPECTION [11/2021 - ]

Result: 

A 

See step  17

1. Turn the ignition switch to OFF.
2. Disconnect the connectors from ECM and direct fuel injector assembly.
3. Measure the resistance of the harness between ECM connector and direct fuel injector assembly connector.

   Connector & terminal

   B1-96 (INJ1-) - B16-1

   B1-87 (INJ1+) - B16-2

   B1-95 (INJ2-) - B17-1

   B1-86 (INJ2+) - B17-2

   B1-93 (INJ3-) - B18-1

   B1-84 (INJ3+) - B18-2

   B1-94 (INJ4-) - B19-1

   B1-85 (INJ4+) - B19-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit of the harness between the ECM connector and direct fuel injector assembly connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  18

1. Measure the resistance between the ECM connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B1-96 (INJ1-) - Engine ground

   B1-87 (INJ1+) - Engine ground

   B1-95 (INJ2-) - Engine ground

   B1-86 (INJ2+) - Engine ground

   B1-93 (INJ3-) - Engine ground

   B1-84 (INJ3+) - Engine ground

   B1-94 (INJ4-) - Engine ground

   B1-85 (INJ4+) - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in the harness between ECM connector and direct fuel injector assembly connector.)	B

Result: 

A 

See step  29

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

1. Check fuel suction tube with pump and gauge assembly.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Check fuel pump system.)	A
   No (Replace the fuel suction tube with pump and gauge assembly.)	B

Result: 

A 

CHECK FUEL PUMP CONTROL CIRCUIT 

Refer to Fuel Pump Control Circuit [11/2021 - ]

Result: 

B 

REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to ON.
2. Using GTS, read the values in [Coolant Temp.], [Ambient Temperature] and [Engine Speed].

   Powertrain > Engine Control System > DTC(P1604) > Freeze Frame Data 

   Tester Display
   Engine Speed
   Coolant Temp.
   Ambient Temperature

   Is the value of [Coolant Temp.] 120°C (248°F) or more? Or is the value of [Coolant Temp.] 15°C (27°F) or more lower than that of [Ambient Temperature]?

   Result	Proceed to
   Yes (Replace the engine coolant temperature sensor.)	A
   No (When the minimum value of [Engine Speed] is less than 300 RPM)	B
   No (When the minimum value of [Engine Speed] is 300 RPM or more)	C

Result: 

A 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

Refer to REMOVAL [11/2021 - ]

Result: 

C 

CHECK ENGINE 

It is possible that the engine compression pressure is not sufficient. Check the engine.

Refer to PROBLEM SYMPTOMS TABLE [11/2021 - ]

Result: 

B 

See step  21

1. Check fuel injector assembly.

   Port injection side: Refer to INSPECTION [11/2021 - ]

   Direct injection side: Refer to INSPECTION [11/2021 - ]

   Is there any deposit in the fuel injector assemblies?

   Result	Proceed to
   Yes (Replace the faulty fuel injector assembly.)	A
   No	B

Result: 

A 

REPLACE FAULTY FUEL INJECTOR ASSEMBLY 

Port injection side: Refer to REMOVAL [11/2021 - ]

Direct injection side: Refer to REMOVAL [11/2021 - ]

Result: 

B 

See step  22

1. Check if any foreign matters such as iron powder exist in the fuel tank assembly.

   Refer to REMOVAL [11/2021 - ]

   Is there any foreign matter in the fuel tank assembly?

   Result	Proceed to
   Yes (Remove foreign matter from the fuel tank assembly.)	A
   No	B

Result: 

A 

REMOVE FOREIGN MATTER FROM FUEL TANK 

Result: 

B 

See step  23

1. Turn the ignition switch to ON.
2. Using GTS, read the value in [Coolant Temp.].

   Powertrain > Engine Control System > DTC(P1604) > Freeze Frame Data 

   Tester Display
   Coolant Temp.

   Is the value of [Coolant Temp.] 40 - 90°C (104 - 194°F)?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  28

Result: 

A 

See step  24

1. After the engine is stopped, scavenge inside of the intake manifold by applying compressed air.
2. Measure the HC concentration inside the intake manifold 15 minutes after scavenging is completed.

   HINT: 

   Remove the vacuum hose between intake manifold and purge valve and perform the measurement.

   Refer to REMOVAL [11/2021 - ]

   Is the HC concentration less than 4000 ppm?

   Result	Proceed to
   Yes	A
   No	B

Result: 

A 

See step  26

Result: 

B 

See step  25

1. Check fuel injector assembly.

   Port injection side: Refer to INSPECTION [11/2021 - ]

   Direct injection side: Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the faulty fuel injector assembly.)	B

Result: 

B 

REPLACE FAULTY FUEL INJECTOR ASSEMBLY 

Port injection side: Refer to REMOVAL [11/2021 - ]

Direct injection side: Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  26

1. Check the throttle body with motor assembly.

   Refer to INSPECTION [11/2021 - ]

   Is there any deposit inside the throttle body with motor assembly?

   Result	Proceed to
   Yes (Replace the throttle body with motor assembly.)	A
   No	B

Result: 

A 

REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

See step  27

1. Check the installing condition of the air intake system.

   Are there holes, loose bolts or disconnection of hose on air intake system?

   Result	Proceed to
   Yes (Repair the air intake system.)	A
   No	B

Result: 

A 

REPAIR AIR INTAKE SYSTEM 

Result: 

B 

See step  29

1. Measure the fuel pressure five minutes after the engine is stopped.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   HINT: 

   If the engine does not start, measure the fuel pressure five minutes after cranking is completed.

   Is the measured value 147 kPa (1.5 kg/cm² , 21 psi) or more?

   Result	Proceed to
   Yes	A
   No (Replace the pressure regulator.)	B

Result: 

B 

REPLACE FUEL PRESSURE REGULATOR ASSEMBLY 

Refer to DISASSEMBLY [11/2021 - 12/2023] , or refer to DISASSEMBLY [12/2023 - ]

Result: 

A 

See step  29

1. Check for the condition of fault occurrence.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

See step  30

1. Check for the condition of fault occurrence.

   Does cranking occur?

   Result	Proceed to
   Yes (When the engine speed is abnormal during cranking)	A
   Yes (When an initial combustion does not occur)	B
   Yes (When the engine stalls immediately after engine start)	C
   Yes (When the engine takes time to start)	D
   No	E

Result: 

B 

See step  34

Result: 

C 

See step  71

Result: 

D 

See step  106

Result: 

E 

See step  161

Result: 

A 

See step  31

1. Turn the ignition switch to ON.
2. Using GTS, read the value of [Engine Speed] during cranking.

   Powertrain > Engine Control System > Data List 

   Tester Display
   Engine Speed

   Is the value of [Engine Speed] 300 RPM or more?

   Result	Proceed to
   Yes (It is possible that the compression pressure of the engine is not sufficient. Check the engine.)	A
   No	B

Result: 

A 

CHECK ENGINE 

Refer to PROBLEM SYMPTOMS TABLE [11/2021 - ]

Result: 

B 

See step  32

1. Check the battery.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Charge or replace the battery.)	B

Result: 

B 

CHARGE OR REPLACE BATTERY 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  33

Does the crankshaft rotate smoothly?

Result: 

A 

CHECK STARTER ASSEMBLY 

for Automatic Transmission: Refer to INSPECTION [11/2021 - ]

for Manual Transmission: Refer to INSPECTION [11/2021 - ]

Result: 

B 

CHECK ENGINE 

Refer to PROBLEM SYMPTOMS TABLE [11/2021 - ]

1. Using a sound scope, check each fuel injector assembly for operation sound during cranking.

   Does the fuel injector assembly emit operating sound?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  68

Result: 

A 

See step  35

1. Check the fuel pressure.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  60

Result: 

A 

See step  36

1. Check the ignition condition.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  40

Result: 

A 

See step  37

1. Check for the condition of fault occurrence.

   Does the fault occur only within approx. 15 to 120 minutes after the engine is stopped?

   Result	Proceed to
   Yes	A
   No (When the fault occurs in two or three minutes or a long time after the engine is stopped)	B
   No (When the fault occurrence pattern is inconsistent)	C

Result: 

B 

See step  39

Result: 

C 

See step  63

Result: 

A 

See step  38

1. After the engine is stopped, scavenge inside of the intake manifold by applying compressed air.
2. Measure the HC concentration inside the intake manifold 15 minutes after scavenging is completed.

   HINT: 

   Remove the vacuum hose between intake manifold and purge valve and perform the measurement.

   Refer to REMOVAL [11/2021 - ]

   Is the HC concentration less than 4000 ppm?

   Result	Proceed to
   Yes	A
   No (Replace the fuel injector assembly.)	B

Result: 

A 

See step  63

Result: 

B 

REPLACE FUEL INJECTOR ASSEMBLY 

Port injection side: Refer to REMOVAL [11/2021 - ]

Direct injection side: Refer to REMOVAL [11/2021 - ]

1. Measure the fuel pressure five minutes after the engine is stopped.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   HINT: 

   If the engine does not start, measure the fuel pressure five minutes after cranking is completed.

   Is the measured value 147 kPa (1.5 kg/cm² , 21 psi) or more?

   Result	Proceed to
   Yes	A
   No (Replace the pressure regulator.)	B

Result: 

A 

See step  63

Result: 

B 

REPLACE FUEL PRESSURE REGULATOR ASSEMBLY 

Refer to DISASSEMBLY [11/2021 - 12/2023] , or refer to DISASSEMBLY [12/2023 - ]

1. Check the spark plug.

   Refer to PROCEDURE - Step 3

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace all spark plugs on all cylinders.)	B

Result: 

B 

REPLACE ALL SPARK PLUGS ON ALL CYLINDERS 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  41

1. Turn the ignition switch to ON.
2. Using GTS, record the value of [Engine Speed] during cranking.

   Powertrain > Engine Control System > Data List 

   Tester Display
   Engine Speed

   Does the recorded value of [Engine Speed] contain data of 0 RPM?

   Result	Proceed to
   Yes (It is possible that temporary fault occurs in the crankshaft position sensor circuit. Check the crankshaft position sensor circuit.)	A
   No	B

Result: 

A 

CHECK CRANKSHAFT POSITION SENSOR CIRCUIT 

Refer to DTC P0335: Crankshaft Position Sensor "A" Circuit [11/2021 - ]

Result: 

B 

See step  42

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ignition coil assembly.
3. Turn the ignition switch to ON.
4. Measure the voltage between ignition coil assembly connector and engine ground.

   Connector & terminal

   B25-1 - Engine ground

   B26-1 - Engine ground

   B27-1 - Engine ground

   B28-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open or short to ground in power supply circuit Blown out of fuse Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  43

1. Disconnect the connector from ECM.
2. Measure the resistance of harness between ECM connector and ignition coil assembly connector.

   Connector & terminal

   B1-10 (IGN1) - B25-2

   B1-11 (IGN2) - B26-2

   B1-12 (IGN3) - B27-2

   B1-13 (IGN4) - B28-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in harness between ECM connector and ignition coil assembly connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  44

1. Measure the resistance of harness between ECM connector and engine ground.

   Connector & terminal

   B1-10 (IGN1) - Engine ground

   B1-11 (IGN2) - Engine ground

   B1-12 (IGN3) - Engine ground

   B1-13 (IGN4) - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the ground short circuit of harness between ECM connector and ignition coil assembly connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  45

1. Turn the ignition switch to OFF.
2. Measure the resistance of harness between ignition coil assembly connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B25-3 - Engine ground

   B26-3 - Engine ground

   B27-3 - Engine ground

   B28-3 - Engine ground

   Is the resistance less than 5 Ω?

   Result	Proceed to
   Yes (Replace the ignition coil assembly.)	A
   No (Repair the open circuit in harness between ignition coil assembly connector and engine ground terminal.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  46

Refer to PROCEDURE - Step 7

If the fault occurs after servicing, continue the diagnosis.

Result: 

NEXT 

See step  47

1. Check the installation condition of crankshaft position sensor.

   Is the crankshaft position sensor installed correctly?

   Result	Proceed to
   Yes	A
   No (Install the crankshaft position sensor correctly.)	B

Result: 

B 

INSTALL CRANKSHAFT POSITION SENSOR CORRECTLY 

Refer to INSTALLATION [11/2021 - ]

Result: 

A 

See step  48

1. Check the installation condition of VVT sensor.

   Is the VVT sensor installed correctly?

   Result	Proceed to
   Yes	A
   No (Install the VVT sensor correctly.)	B

Result: 

B 

INSTALL VVT SENSOR CORRECTLY 

Refer to INSTALLATION [11/2021 - ]

Result: 

A 

See step  49

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the crankshaft position sensor.
3. Turn the ignition switch to ON.
4. Measure the voltage between crankshaft position sensor connector and engine ground.

   Connector & terminal

   B5-3 - Engine ground

   Is the voltage 4.5 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair open or short circuit to ground in the harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  50

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and crankshaft position sensor connector.

   Connector & terminal

   B1-66 (CRADIGT) - B5-1

   B1-68 (AVSSCRA) - B5-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between the ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  51

1. Measure the resistance between crankshaft position sensor connector and engine ground.

   Connector & terminal

   B5-1 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  52

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the VVT sensor (for intake side) sensor.
3. Turn the ignition switch to ON.
4. Measure the voltage between VVT sensor (for intake side) connector and engine ground.

   Connector & terminal

   B2-1 - Engine ground

   B24-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit or short circuit to ground in harness between No. 1 engine room relay block and No. 1 junction block assembly and VVT sensor (for intake side) connector Blown out of fuse Poor contact of J/C Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  53

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance between ECM connector and VVT sensor (for intake side) connector.

   Connector & terminal

   B1-78 (AVCSR+) - B2-2

   B1-51 (AVSSCAM) - B2-3

   B1-77 (AVCSL+) - B24-2

   B1-51 (AVSSCAM) - B24-3

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between ECM connector and VVT sensor (for intake side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  54

1. Measure the resistance between VVT sensor (for intake side) connectors and engine ground.

   Connector & terminal

   B2-2 - Engine ground

   B24-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in the harness between ECM connector and VVT sensor (for intake side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  55

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the VVT sensor (for exhaust side).
3. Turn the ignition switch to ON.
4. Measure the voltage between VVT sensor (for exhaust side) connectors and engine ground.

   Connector & terminal

   B3-1 - Engine ground

   B4-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between No. 1 engine room relay block and No. 1 junction block assembly and VVT sensor (for exhaust side) connector Blown out of fuse Poor contact of J/C Poor contact of coupling connector	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  56

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance between ECM connector and VVT sensor (for exhaust side) connectors.

   Connector & terminal

   B1-65 (AVCSER+) - B3-2

   B1-51 (AVSSCAM) - B3-3

   B1-64 (AVCSEL+) - B4-2

   B1-51 (AVSSCAM) - B4-3

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between ECM connector and VVT sensor (for exhaust side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  57

1. Measure the resistance between VVT sensor (for exhaust side) connectors and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B3-2 - Engine ground

   B4-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in the harness between ECM connector and VVT sensor (for exhaust side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  58

1. Replace the crankshaft position sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

See step  59

1. Replace the VVT sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No (Replace the ECM.)	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

REPLACE ECM 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to ON.
2. Using GTS, select [Fuel Pump Relay] of [Active Test].

   Powertrain > Engine Control System > Active Test 

   Tester Display
   Fuel Pump Relay

   HINT: 

   For detailed operation procedures, refer to the "Active Test".

   Refer to DATA LIST / ACTIVE TEST [11/2021 - 12/2023] , or refer to DATA LIST / ACTIVE TEST [12/2023 - 10/2024] , or refer to DATA LIST / ACTIVE TEST [10/2024 - ]

3. Check if operating sound occurs in the fuel suction tube with pump and gauge assembly according to ON/OFF switching operation.

   Does the fuel suction tube with pump and gauge assembly emit operating sound?

   Result	Proceed to
   Yes (Check the fuel suction tube with pump and gauge assembly and fuel delivery line.)	A
   No	B

Result: 

A 

CHECK FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY AND FUEL DELIVERY LINE 

Refer to INSPECTION [11/2021 - ]

Result: 

B 

See step  61

1. Check fuel suction tube with pump and gauge assembly.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Check fuel pump system.)	A
   No (Replace the fuel suction tube with pump and gauge assembly.)	B

Result: 

B 

REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  62

Refer to Fuel Pump Control Circuit [11/2021 - ]

If the fault occurs after servicing, continue the diagnosis

Result: 

B 

END 

Result: 

A 

See step  63

1. Check fuel injector assembly.

   Port injection side: Refer to INSPECTION [11/2021 - ]

   Direct injection side: Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the faulty fuel injector assembly.)	B

Result: 

B 

REPLACE FAULTY FUEL INJECTOR ASSEMBLY 

Port injection side: Refer to REMOVAL [11/2021 - ]

Direct injection side: Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  64

1. Turn the ignition switch to OFF.
2. Disconnect the connectors from ECM and direct fuel injector assembly.
3. Measure the resistance of the harness between ECM connector and direct fuel injector assembly connector.

   Connector & terminal

   B1-96 (INJ1-) - B16-1

   B1-87 (INJ1+) - B16-2

   B1-95 (INJ2-) - B17-1

   B1-86 (INJ2+) - B17-2

   B1-93 (INJ3-) - B18-1

   B1-84 (INJ3+) - B18-2

   B1-94 (INJ4-) - B19-1

   B1-85 (INJ4+) - B19-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit of the harness between the ECM connector and direct fuel injector assembly connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  65

1. Measure the resistance between the ECM connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B1-96 (INJ1-) - Engine ground

   B1-87 (INJ1+) - Engine ground

   B1-95 (INJ2-) - Engine ground

   B1-86 (INJ2+) - Engine ground

   B1-93 (INJ3-) - Engine ground

   B1-84 (INJ3+) - Engine ground

   B1-94 (INJ4-) - Engine ground

   B1-85 (INJ4+) - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in the harness between ECM connector and direct fuel injector assembly connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  66

1. Replace the crankshaft position sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

See step  67

1. Replace the VVT sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No (Replace the ECM.)	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

REPLACE ECM 

Refer to REMOVAL [11/2021 - ]

1. Using GTS, record the value of [Engine Speed] during cranking.

   Powertrain > Engine Control System > Data List 

   Tester Display
   Engine Speed

   Does the recorded value of [Engine Speed] contain data of 0 RPM?

   Result	Proceed to
   Yes (It is possible that temporary fault occurs in the crankshaft position sensor circuit. Check the crankshaft position sensor circuit.)	A
   No	B

Result: 

A 

CHECK CRANKSHAFT POSITION SENSOR CIRCUIT 

Refer to DTC P0335: Crankshaft Position Sensor "A" Circuit [11/2021 - ]

Result: 

B 

See step  69

1. Turn the ignition switch to OFF.
2. Disconnect the connectors from ECM and direct fuel injector assembly.
3. Measure the resistance of the harness between ECM connector and direct fuel injector assembly connector.

   Connector & terminal

   B1-96 (INJ1-) - B16-1

   B1-87 (INJ1+) - B16-2

   B1-95 (INJ2-) - B17-1

   B1-86 (INJ2+) - B17-2

   B1-93 (INJ3-) - B18-1

   B1-84 (INJ3+) - B18-2

   B1-94 (INJ4-) - B19-1

   B1-85 (INJ4+) - B19-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit of the harness between the ECM connector and direct fuel injector assembly connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  70

1. Measure the resistance between the ECM connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B1-96 (INJ1-) - Engine ground

   B1-87 (INJ1+) - Engine ground

   B1-95 (INJ2-) - Engine ground

   B1-86(INJ2+) - Engine ground

   B1-93 (INJ3-) - Engine ground

   B1-84 (INJ3+) - Engine ground

   B1-94 (INJ4-) - Engine ground

   B1-85 (INJ4+) - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes (Replace the ECM.)	A
   No (Repair the short circuit to ground in the harness between ECM connector and direct fuel injector assembly connector.)	B

Result: 

A 

REPLACE ECM 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

1. Check the mass air flow meter.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  91

Result: 

A 

See step  72

1. Check the installing condition of the air intake system.

   Are there holes, loose bolts or disconnection of hose on air intake system?

   Result	Proceed to
   Yes (Repair the air intake system.)	A
   No	B

Result: 

A 

REPAIR AIR INTAKE SYSTEM 

Result: 

B 

See step  73

1. Check the throttle body with motor assembly.

   Refer to INSPECTION [11/2021 - ]

   Is there any deposit inside the throttle body with motor assembly?

   Result	Proceed to
   Yes (Replace the throttle body with motor assembly.)	A
   No	B

Result: 

A 

REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

See step  74

1. Turn the ignition switch to ON.
2. Using GTS, read the values in [VVT Adv. Ang. Amount R], [VVT Advance Target Angle Amount R], [VVT Adv. Ang. Amount L], [VVT Advance Target Angle Amount L], [Exh. VVT Retard Ang. R], [Ex VVT Retard Target Angle R], [Exh. VVT Retard Ang. L] and [Ex VVT Retard Target Angle L].

   Powertrain > Engine Control System > Data List 

   Tester Display
   VVT Adv. Ang. Amount R
   VVT Advance Target Angle Amount R
   VVT Adv. Ang. Amount L
   VVT Advance Target Angle Amount L
   Exh. VVT Retard Ang. R
   Ex VVT Retard Target Angle R
   Exh. VVT Retard Ang. L
   Ex VVT Retard Target Angle L

3. Using GTS, compare the respective values between the followings: [VVT Adv. Ang. Amount R] and [VVT Advance Target Angle Amount R], [VVT Adv. Ang. Amount L] and [VVT Advance Target Angle Amount L], [Exh. VVT Retard Ang. R] and [Ex VVT Retard Target Angle R], [Exh. VVT Retard Ang. L] and [Ex VVT Retard Target Angle L].

   Does all of the advance angle amount and retard angle amount synchronize with their target values?

   Result	Proceed to
   Yes	A
   No (Check camshaft timing oil control valve (for intake side of bank 1) with a difference of 10 deg or more.)	B
   No (Check camshaft timing oil control valve (for intake side of bank 2) with a difference of 10 deg or more.)	C
   No (Check camshaft timing oil control valve (for exhaust side of bank 1) with a difference of 10 deg or more.)	D
   No (Check camshaft timing oil control valve (for exhaust side of bank 2) with a difference of 10 deg or more.)	E

Result: 

A 

See step  94

Result: 

C 

See step  79

Result: 

D 

See step  83

Result: 

E 

See step  87

Result: 

B 

See step  75

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the camshaft timing oil control valve (for intake side of bank 1).
3. Turn the ignition switch to ON.
4. Measure the voltage between camshaft timing oil control valve (for intake side of bank 1) connector and engine ground.

   Connector & terminal

   B20-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between No. 1 engine room relay block and No. 1 junction block assembly and camshaft timing oil control valve (for intake side of bank 1) connector Blown out of fuse Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  76

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and camshaft timing oil control valve (for intake side of bank 1) connector.

   Connector & terminal

   B1-99 (OCVR) - B20-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in harness between ECM connector and camshaft timing oil control valve (for intake side of bank 1) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  77

1. Measure the resistance between camshaft timing oil control valve (for intake side of bank 1) connector and engine ground.

   Connector & terminal

   B20-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in harness between ECM connector and camshaft timing oil control valve (for intake side of bank 1) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  78

1. Check the camshaft timing oil control valve (for intake side of bank 1).

   Refer to PROCEDURE - Step 1

   Is the check result OK?

   Result	Proceed to
   Yes (Replace the camshaft timing intake gear assembly RH.)	A
   No (Replace the camshaft timing oil control valve (for intake side of bank 1).)	B

Result: 

A 

REPLACE CAMSHAFT TIMING INTAKE GEAR ASSEMBLY RH 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR INTAKE SIDE OF BANK 1) 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the camshaft timing oil control valve (for intake side of bank 2).
3. Turn the ignition switch to ON.
4. Measure the voltage between camshaft timing oil control valve (for intake side of bank 2) connector and engine ground.

   Connector & terminal

   B21-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between No. 1 engine room relay block and No. 1 junction block assembly and camshaft timing oil control valve (for intake side of bank 2) connector Blown out of fuse Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  80

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and camshaft timing oil control valve (for intake side of bank 2) connector.

   Connector & terminal

   B1-100 (OCVL) - B21-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in harness between ECM connector and camshaft timing oil control valve (for intake side of bank 2) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  81

1. Measure the resistance between camshaft timing oil control valve (for intake side of bank 2) connector and engine ground.

   Connector & terminal

   B21-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in harness between ECM connector and camshaft timing oil control valve (for intake side of bank 2) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  82

1. Check the camshaft timing oil control valve (for intake side of bank 2).

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Replace the camshaft timing intake gear assembly LH.)	A
   No (Replace the camshaft timing oil control valve (for intake side of bank 2).)	B

Result: 

A 

REPLACE CAMSHAFT TIMING INTAKE GEAR ASSEMBLY LH 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR INTAKE SIDE OF BANK 2) 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the camshaft timing oil control valve (for exhaust side of bank 1).
3. Turn the ignition switch to ON.
4. Measure the voltage between camshaft timing oil control valve (for exhaust side of bank 1) connector and engine ground.

   Connector & terminal

   B22-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between No. 1 engine room relay block and No. 1 junction block assembly and camshaft timing oil control valve (for exhaust side of bank 1) connector Blown out of fuse Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  84

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and camshaft timing oil control valve (for exhaust side of bank 1) connector.

   Connector & terminal

   B1-108 (OCVER) - B22-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in harness between ECM connector and camshaft timing oil control valve (for exhaust side of bank 1) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  85

1. Measure the resistance between camshaft timing oil control valve (for exhaust side of bank 1) connector and engine ground.

   Connector & terminal

   B22-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in harness between ECM connector and camshaft timing oil control valve (for exhaust side of bank 1) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  86

1. Check the camshaft timing oil control valve (for exhaust side of bank 1).

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Replace the camshaft timing exhaust gear assembly RH.)	A
   No (Replace the exhaust oil control solenoid RH.)	B

Result: 

A 

REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY RH 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR EXHAUST SIDE OF BANK 1) 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the camshaft timing oil control valve (for exhaust side of bank 2).
3. Turn the ignition switch to ON.
4. Measure the voltage between camshaft timing oil control valve (for exhaust side of bank 2) connector and engine ground.

   Connector & terminal

   B23-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between No. 1 engine room relay block and No. 1 junction block assembly and camshaft timing oil control valve (for exhaust side of bank 2) connector Blown out of fuse Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  88

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and camshaft timing oil control valve (for exhaust side of bank 2) connector.

   Connector & terminal

   B1-109 (OCVEL) - B23-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in harness between ECM connector and camshaft timing oil control valve (for exhaust side of bank 2) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  89

1. Measure the resistance between camshaft timing oil control valve (for exhaust side of bank 2) connector and engine ground.

   Connector & terminal

   B23-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in harness between ECM connector and camshaft timing oil control valve (for exhaust side of bank 2) connector.)	B

Result: 

B 

HARNESS OR CONNECTOR 

Result: 

A 

See step  90

1. Check the camshaft timing oil control valve (for exhaust side of bank 2).

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Replace the camshaft timing exhaust gear assembly LH.)	A
   No (Replace the exhaust oil control solenoid LH.)	B

Result: 

A 

REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY LH 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR EXHAUST SIDE OF BANK 2) 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Disconnect the connectors from the mass air flow meter.
4. Disconnect the connector from manifold absolute pressure sensor.
5. Measure the resistance of harness between ECM connector and the mass air flow meter connector, and between ECM connector and the manifold absolute pressure sensor connector.

   Connector & terminal

   A5-32 (AFM) - B15-1

   A5-54 (AVSS2) - B15-2

   A5-53 (AVCC2) - B15-3

   A5-43 (TA) - B15-4

   B1-58 (AVSS1) - B12-1

   B1-69 (MAP) - B12-2

   B1-41 (AVCC1) - B12-3

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between ECM connector and the mass air flow meter connector Open circuit of harness between ECM connector and manifold absolute pressure sensor connector Poor contact of J/C Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  92

1. Measure the resistance between the ECM connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   A5-32 (AFM) - Engine ground

   A5-43 (TA) - Engine ground

   A5-53 (AVCC2) - Engine ground

   B1-41 (AVCC1) - Engine ground

   B1-69 (MAP) - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes (Replace the mass air flow meter or the manifold absolute pressure sensor.)	A
   No (Repair the following item.) Short circuit to ground in harness between ECM connector and the mass air flow meter connector Short circuit to ground in harness between ECM connector and manifold absolute pressure sensor connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  93

Refer to REMOVAL [11/2021 - ]

Refer to REMOVAL [11/2021 - ]

If the fault occurs after servicing

Result: 

B 

END 

Result: 

A 

See step  94

1. Check the engine coolant temperature sensor.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the engine coolant temperature sensor.)	B

Result: 

B 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  95

1. Measure the fuel pressure during cranking or five minutes after the engine is stopped.

   Refer to PROCEDURE - Step 2

   Is the fuel pressure during cranking 340 - 470 kPa (3.5 - 4.8 kgf/cm² , 49.3 - 68.1 psi), and at the same time, is the fuel pressure five minutes after engine stop 147 kPa (1.5 kgf/cm² , 21 psi) or more?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  105

Result: 

A 

See step  96

1. Turn the ignition switch to ON. (Engine OFF)
2. Using GTS, read the value in [Long term fuel trim B1].

   Powertrain > Engine Control System > Data List 

   Tester Display
   Long term fuel trim B1

   Does the value of [Long term fuel trim B1] fall within a range of -15 - 15%?

   Result	Proceed to
   Yes	A
   No (Replace the fuel injector assembly.)	B

Result: 

B 

REPLACE FUEL INJECTOR ASSEMBLY 

Port injection side: Refer to REMOVAL [11/2021 - ]

Direct injection side: Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  97

1. Start the engine and check the idling speed.

   Is the idling speed stable all time?

   Result	Proceed to
   Yes (It is possible that the fault comes from fuel. Replace fuel.)	A
   No	B

Result: 

A 

REPLACE FUEL 

Result: 

B 

See step  98

1. Check the installation condition of crankshaft position sensor.

   Is the crankshaft position sensor installed correctly?

   Result	Proceed to
   Yes	A
   No (Install the crankshaft position sensor correctly.)	B

Result: 

B 

INSTALL CRANKSHAFT POSITION SENSOR CORRECTLY 

Refer to INSTALLATION [11/2021 - ]

Result: 

A 

See step  99

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the crankshaft position sensor.
3. Turn the ignition switch to ON.
4. Measure the voltage between crankshaft position sensor connector and engine ground.

   Connector & terminal

   B5-3 - Engine ground

   Is the voltage 4.5 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair open or short circuit to ground in the harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  100

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and crankshaft position sensor connector.

   Connector & terminal

   B1-66 (CRADIGT) - B5-1

   B1-68 (AVSSCRA) - B5-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between the ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  101

1. Measure the resistance between crankshaft position sensor connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B5-1 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  102

1. Check the compression pressure.

   Refer to PROCEDURE - Step 10

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Check the engine.)	B

Result: 

B 

CHECK ENGINE 

Refer to PROBLEM SYMPTOMS TABLE [11/2021 - ]

Result: 

A 

See step  103

1. Replace the crankshaft position sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No (Check the valve timing.)	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

See step  104

Refer to REMOVAL [11/2021 - ]

When the valve timing is normal

Result: 

A 

REPLACE ECM 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

END 

1. Check fuel suction tube with pump and gauge assembly.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Check fuel pump system.)	A
   No (Replace the fuel suction tube with pump and gauge assembly.)	B

Result: 

A 

CHECK FUEL PUMP CONTROL CIRCUIT 

Refer to Fuel Pump Control Circuit [11/2021 - ]

Result: 

B 

REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

1. Check the engine coolant temperature sensor.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the engine coolant temperature sensor.)	B

Result: 

B 

See step  131

Result: 

A 

See step  107

1. Turn the ignition switch to OFF.
2. Disconnect the connectors from ECM and engine coolant temperature sensor.
3. Measure the resistance of harness between ECM connector and engine coolant temperature sensor connector.

   Connector & terminal

   B1-58 (AVSS1) - B11-1

   B1-34 (TW_OUT) - B11-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit of the harness between the ECM connector and engine coolant temperature sensor connector.)	B

Result: 

B 

See step  129

Result: 

A 

See step  108

1. Measure the resistance between the ECM connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B1-34 (TW_OUT) - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in harness between ECM connector and engine coolant temperature sensor connector.)	B

Result: 

B 

See step  127

Result: 

A 

See step  109

1. Turn the ignition switch to ON. (Engine OFF)
2. Using GTS, read the values in [Long term fuel trim B1] and [Atmosphere Pressure].

   Powertrain > Engine Control System > Data List 

   Tester Display
   Long term fuel trim B1
   Atmosphere Pressure

   Is the value of [Long term fuel trim B1] -25 - 25%? And is the value of [Atmosphere Pressure] 80 kPa (600 mmHg, 23.6 inHg) or more?

   Result	Proceed to
   Yes	A
   No	B

Result: 

A 

See step  116

Result: 

B 

See step  110

1. Using GTS or a general scan tool, perform the clear memory of [Engine].

   Powertrain > Engine Control System > Clear DTCs 

2. Start the engine.

   Does the engine start?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  116

Result: 

A 

See step  111

1. Check the idle speed.

   Refer to PROCEDURE - Step 9

   Is the idle speed stable?

   Result	Proceed to
   Yes (Replace the mass air flow meter.)	A
   No (Replace the fuel injector assembly.)	B

Result: 

B 

See step  114

Result: 

A 

See step  112

Refer to REMOVAL [11/2021 - ]

If the fault occurs after servicing

Result: 

B 

END 

Result: 

A 

See step  113

Refer to REMOVAL [11/2021 - ]

If the fault still occurs after replacing the ECM

Result: 

A 

See step  133

Result: 

B 

END 

Port injection side: Refer to REMOVAL [11/2021 - ]

Direct injection side: Refer to REMOVAL [11/2021 - ]

If the fault occurs after servicing

Result: 

B 

END 

Result: 

A 

See step  115

Refer to REMOVAL [11/2021 - ]

If the fault still occurs after replacing the ECM

Result: 

A 

See step  133

Result: 

B 

END 

1. Check the fuel pressure.

   Refer to PROCEDURE - Step 2

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  125

Result: 

A 

See step  117

1. Using GTS, read the values in [Fuel Rail Pressure A] and [Commanded Fuel Rail Pressure A].

   Powertrain > Engine Control System > DTC(P1604) > Freeze Frame Data 

   Tester Display
   Fuel Rail Pressure A
   Commanded Fuel Rail Pressure A

   Is the value in [Fuel Rail Pressure A] synchronized with the one in [Commanded Fuel Rail Pressure A] in all Freeze Frame Data?

   Result	Proceed to
   Yes	A
   No (Check the fuel (engine room side) pump assembly.)	B

Result: 

B 

CHECK FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 

Refer to INSPECTION [11/2021 - ]

Result: 

A 

See step  118

1. Check all spark plugs on all cylinders.

   Refer to PROCEDURE - Step 3

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (When spark plugs in some cylinders are faulty)	B
   No (When all spark plugs in all cylinders are faulty)	C

Result: 

B 

See step  123

Result: 

C 

See step  124

Result: 

A 

See step  119

1. Check for the condition of fault occurrence.

   Does the fault occur only within approx. 15 to 120 minutes after the engine is stopped?

   Result	Proceed to
   Yes	A
   No (When the fault occurs in two or three minutes or a long time after the engine is stopped)	B
   No (When the fault occurrence pattern is inconsistent)	C

Result: 

B 

See step  122

Result: 

C 

See step  133

Result: 

A 

See step  120

1. Check the purge valve.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the purge valve.)	B

Result: 

B 

REPLACE PURGE VALVE 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  121

1. After the engine is stopped, scavenge inside of the intake manifold by applying compressed air.
2. Measure the HC concentration inside the intake manifold 15 minutes after scavenging is completed.

   HINT: 

   Remove the vacuum hose between intake manifold and purge valve and perform the measurement.

   Refer to PARTS LOCATION [11/2021 - ]

   Is the HC concentration less than 4000 ppm?

   Result	Proceed to
   Yes	A
   No (Replace the fuel injector assembly.)	B

Result: 

A 

See step  133

Result: 

B 

REPLACE FUEL INJECTOR ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

1. Measure the fuel pressure five minutes after the engine is stopped.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   HINT: 

   If the engine does not start, measure the fuel pressure five minutes after cranking is completed.

   Is the measured value 147 kPa (1.5 kg/cm² , 21 psi) or more?

   Result	Proceed to
   Yes	A
   No (Replace the pressure regulator.)	B

Result: 

A 

See step  133

Result: 

B 

REPLACE FUEL PRESSURE REGULATOR ASSEMBLY 

Refer to DISASSEMBLY [11/2021 - 12/2023] , or refer to DISASSEMBLY [12/2023 - ]

1. When spark plugs in some cylinders are faulty: Replace the faulty spark plugs of the cylinders, then check the ignition system and fuel system in the faulty cylinders.

   Refer to PROCEDURE - Step 8

   If the fault occurs after servicing

   Result	Proceed to
   Yes	A
   No	B

Result: 

A 

See step  133

Result: 

B 

END 

1. When all spark plugs in all cylinders are faulty: Replace faulty spark plugs in all cylinders.

   Refer to PROCEDURE - Step 8

   If the fault occurs after servicing

   Result	Proceed to
   Yes	A
   No	B

Result: 

A 

See step  133

Result: 

B 

END 

1. Check fuel suction tube with pump and gauge assembly.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Check fuel pump system.)	A
   No (Replace the fuel suction tube with pump and gauge assembly.)	B

Result: 

B 

REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  126

Refer to Fuel Pump Control Circuit [11/2021 - ]

If the fault occurs after servicing

Result: 

A 

See step  133

Result: 

B 

END 

1. Repair the open circuit of the harness between the ECM connector and engine coolant temperature sensor connector.

   If the fault occurs after servicing

   Result	Proceed to
   Yes (replace the ECM)	A
   No	B

Result: 

B 

END 

Result: 

A 

See step  128

Refer to REMOVAL [11/2021 - ]

If the fault still occurs after replacing the ECM

Result: 

A 

See step  133

Result: 

B 

END 

1. Repair the short circuit to ground in harness between ECM connector and engine coolant temperature sensor connector.

   If the fault occurs after servicing

   Result	Proceed to
   Yes (replace the ECM)	A
   No	B

Result: 

B 

END 

Result: 

A 

See step  130

Refer to REMOVAL [11/2021 - ]

If the fault still occurs after replacing the ECM

Result: 

A 

See step  133

Result: 

B 

END 

Refer to REMOVAL [11/2021 - ]

If the fault occurs after servicing

Result: 

B 

END 

Result: 

A 

See step  132

Refer to REMOVAL [11/2021 - ]

If the fault still occurs after replacing the ECM

Result: 

B 

END 

Result: 

A 

See step  133

1. Measure the fuel pressure during cranking or five minutes after the engine is stopped.

   Refer to PROCEDURE - Step 2

   Is the fuel pressure during cranking 340 - 470 kPa (3.5 - 4.8 kgf/cm² , 49.3 - 68.1 psi), and at the same time, is the fuel pressure five minutes after engine stop 147 kPa (1.5 kgf/cm² , 21 psi) or more?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  141

Result: 

A 

See step  134

1. Turn the ignition switch to ON. (Engine OFF)
2. Using GTS, read the value in [Long term fuel trim B1].

   Powertrain > Engine Control System > Data List 

   Tester Display
   Long term fuel trim B1

   Does the value of [Long term fuel trim B1] fall within a range of -15 - 15%?

   Result	Proceed to
   Yes	A
   No (Replace the fuel injector assembly.)	B

Result: 

B 

REPLACE FUEL INJECTOR ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  135

1. Start the engine and check the idling speed.

   Is the idling speed stable all time?

   Result	Proceed to
   Yes (It is possible that the fault comes from fuel. Replace fuel.)	A
   No	B

Result: 

A 

REPLACE FUEL 

Result: 

B 

See step  136

1. Check the installation condition of crankshaft position sensor.

   Is the crankshaft position sensor installed correctly?

   Result	Proceed to
   Yes	A
   No (Install the crankshaft position sensor correctly.)	B

Result: 

B 

INSTALL CRANKSHAFT POSITION SENSOR CORRECTLY 

Refer to INSTALLATION [11/2021 - ]

Result: 

A 

See step  137

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the crankshaft position sensor.
3. Turn the ignition switch to ON.
4. Measure the voltage between crankshaft position sensor connector and engine ground.

   Connector & terminal

   B5-3 - Engine ground

   Is the voltage 4.5 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair open or short circuit to ground in the harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  138

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and crankshaft position sensor connector.

   Connector & terminal

   B1-66 (CRADIGT) - B5-1

   B1-68 (AVSSCRA) - B5-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between the ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  139

1. Measure the resistance between crankshaft position sensor connector and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B5-1 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  140

1. Replace the crankshaft position sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No (Replace the ECM.)	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

REPLACE ECM 

Refer to REMOVAL [11/2021 - ]

1. Check fuel suction tube with pump and gauge assembly.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the fuel suction tube with pump and gauge assembly.)	B

Result: 

B 

REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  142

1. Check fuel pump control circuit.

   Refer to Fuel Pump Control Circuit [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Repair the fuel pump system.)	B

Result: 

B 

REPLACE FUEL PUMP COTROL CIRCUIT 

Refer to Fuel Pump Control Circuit [11/2021 - ]

Result: 

A 

See step  143

1. Check the purge valve.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the purge valve.)	B

Result: 

B 

REPLACE PURGE VALVE 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  144

1. After the engine is stopped, scavenge inside of the intake manifold by applying compressed air.
2. Measure the HC concentration inside the intake manifold 15 minutes after scavenging is completed.

   HINT: 

   Remove the vacuum hose between intake manifold and purge valve and perform the measurement.

   Refer to REMOVAL [11/2021 - ]

   Is the HC concentration less than 4000 ppm?

   Result	Proceed to
   Yes	A
   No (Replace the fuel injector assembly.)	B

Result: 

B 

REPLACE FUEL INJECTOR ASSEMBLY 

Port injection side: Refer to REMOVAL [11/2021 - ]

Direct injection side: Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  145

1. Check the intake valve.

   Refer to INSPECTION [11/2021 - ]

   Is there any deposit in the intake valve?

   Result	Proceed to
   Yes (Clean the intake valve.)	A
   No (GTSGTS)	B

Result: 

A 

CLEAN INTAKE VALVE 

Refer to DISASSEMBLY [11/2021 - ]

Result: 

B 

See step  146

1. Check the engine coolant temperature sensor.

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the engine coolant temperature sensor.)	B

Result: 

B 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  147

1. Check the installation condition of crankshaft position sensor.

   Refer to INSTALLATION [11/2021 - ]

   Is the crankshaft position sensor installed correctly?

   Result	Proceed to
   Yes	A
   No (Install the crankshaft position sensor correctly.)	B

Result: 

B 

INSTALL CRANKSHAFT POSITION SENSOR CORRECTLY 

Refer to INSTALLATION [11/2021 - ]

Result: 

A 

See step  148

1. Check the installation condition of VVT sensor.

   Refer to INSTALLATION [11/2021 - ]

   Is the VVT sensor installed correctly?

   Result	Proceed to
   Yes	A
   No (Install the VVT sensor correctly.)	B

Result: 

B 

INSTALL VVT SENSOR CORRECTLY 

Refer to INSTALLATION [11/2021 - ]

Result: 

A 

See step  149

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the crankshaft position sensor.
3. Turn the ignition switch to ON.
4. Measure the voltage between crankshaft position sensor connector and engine ground.

   Connector & terminal

   B5-3 - Engine ground

   Is the voltage 4.5 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair open or short circuit to ground in the harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  150

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM connector and crankshaft position sensor connector.

   Connector & terminal

   B1-66 (CRADIGT) - B5-1

   B1-68 (AVSSCRA) - B5-2

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between the ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  151

1. Measure the resistance between crankshaft position sensor connector and engine ground.

   Connector & terminal

   B5-1 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in harness between ECM connector and crankshaft position sensor connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  152

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the VVT sensors (for intake side).
3. Turn the ignition switch to ON.
4. Measure the voltage between intake VVT sensor (for intake side) connector and engine ground.

   Connector & terminal

   B2-1 - Engine ground

   B24-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit or short circuit to ground in harness between No. 1 engine room relay block and No. 1 junction block assembly and VVT sensor (for intake side) connector Blown out of fuse Poor contact of J/C Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  153

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance between ECM connector and VVT sensor (for intake side) connector.

   Connector & terminal

   B1-78 (AVCSR+) - B2-2

   B1-51 (AVSSCAM) - B2-3

   B1-77 (AVCSL+) - B24-2

   B1-51 (AVSSCAM) - B24-3

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between ECM connector and VVT sensor (for intake side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  154

1. Measure the resistance between VVT sensor (for intake side) connectors and engine ground.

   Connector & terminal

   B2-2 - Engine ground

   B24-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in the harness between ECM connector and VVT sensor (for intake side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  155

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the VVT sensor (for exhaust side).
3. Turn the ignition switch to ON.
4. Measure the voltage between VVT sensor (for exhaust side) connector and engine ground.

   Connector & terminal

   B3-1 - Engine ground

   B4-1 - Engine ground

   Is the voltage 10 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between No. 1 engine room relay block and No. 1 junction block assembly and VVT sensor (for exhaust side) connector Blown out of fuse Poor contact of J/C Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  156

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance between ECM connector and VVT sensor (for exhaust side) connector.

   Connector & terminal

   B1-65 (AVCSER+) - B3-2

   B1-51 (AVSSCAM) - B3-3

   B1-64 (AVCSEL+) - B4-2

   B1-51 (AVSSCAM) - B4-3

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair the open circuit in the harness between ECM connector and VVT sensor (for exhaust side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  157

1. Measure the resistance between VVT sensor (for exhaust side) connectors and engine ground.

   HINT: 

   Connect all connectors after measurement.

   Connector & terminal

   B3-2 - Engine ground

   B4-2 - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair short circuit to ground in the harness between ECM connector and VVT sensor (for exhaust side) connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  158

1. Check the compression pressure.

   Refer to PROCEDURE - Step 10

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Check the engine.)	B

Result: 

B 

CHECK ENGINE 

Refer to PROBLEM SYMPTOMS TABLE [11/2021 - ]

Result: 

A 

See step  159

1. Replace the crankshaft position sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

See step  160

1. Replace the VVT sensor.

   Refer to REMOVAL [11/2021 - ]

2. Check that the fault is removed.

   Is the fault removed?

   Result	Proceed to
   Yes (Clear the memory to complete.)	A
   No (Check the valve timing.)	B

Result: 

A 

CLEAR MEMORY TO COMPLETE 

Result: 

B 

See step  164

1. Check for the condition of fault occurrence.

   Does the sound occur by a protruding starter pinion gear during cranking?

   Result	Proceed to
   Yes (When the starter assembly does not rotate)	A
   Yes (When the starter assembly rotates but does not engage)	B
   No	C

Result: 

B 

See step  165

Result: 

C 

See step  166

Result: 

A 

See step  162

1. Check the battery.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Charge or replace the battery.)	B

Result: 

B 

CHARGE OR REPLACE BATTERY 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  163

Does the crankshaft rotate smoothly?

Result: 

A 

CHECK STARTER ASSEMBLY 

for Automatic Transmission: Refer to INSPECTION [11/2021 - ]

for Manual Transmission: Refer to INSPECTION [11/2021 - ]

Result: 

B 

CHECK ENGINE 

Refer to PROBLEM SYMPTOMS TABLE [11/2021 - ]

Refer to REMOVAL [11/2021 - ]

When the valve timing is normal

Result: 

A 

REPLACE ECM 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

END 

1. Check the starter assembly.

   for Automatic Transmission: Refer to INSPECTION [11/2021 - ]

   for Manual Transmission: Refer to INSPECTION [11/2021 - ]

   Is there any wear or damage in the starter pinion gear?

   Result	Proceed to
   Yes (Repair the starter assembly.)	A
   No (Replace the torque converter assembly.)	B

Result: 

A 

REPAIR STARTER ASSEMBLY 

for Automatic Transmission: Refer to INSPECTION [11/2021 - ]

for Manual Transmission: Refer to INSPECTION [11/2021 - ]

Result: 

B 

REPLACE TORQUE CONVERTER ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

1. Check the battery.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Charge or replace the battery.)	B

Result: 

B 

CHARGE OR REPLACE BATTERY 

Refer to REMOVAL [11/2021 - ]

Result: 

A 

See step  167

1. Check the starter assembly.

   for Automatic Transmission: Refer to INSPECTION [11/2021 - ]

   for Manual Transmission: Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Check the starter signal circuit.)	A
   No (Repair the starter assembly.)	B

Result: 

A 

CHECK STARTER SIGNAL CIRCUIT 

Refer to Starter Signal Circuit [11/2021 - ]

Result: 

B 

REPAIR STARTER ASSEMBLY 

for Automatic Transmission: Refer to INSPECTION [11/2021 - ]

for Manual Transmission: Refer to INSPECTION [11/2021 - ]