Diagnostic Procedure

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake valve timing control solenoid valve harness connector.
  
  Fig 1: Disconnecting Intake Valve Timing Control Solenoid Valve Harness Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Turn ignition switch ON.
4. Check voltage between intake valve timing control solenoid valve terminal 2 and ground with CONSULT-II or tester.
  Voltage: Battery voltage
OK or NG
1. OK : GO TO 3.
2. NG : GO TO 2.
  
  Fig 2: Checking Voltage Between Intake Valve Timing Control Solenoid Valve Terminal 2 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E20, F32
- Harness connectors F44, F101
- IPDM E/R harness connector E122
- Harness for open or short between intake valve timing control solenoid valve and IPDM E/R
1. : Repair harness or connectors.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 9 (bank 1) or 8 (bank 2) and intake valve timing control solenoid valve terminal 1. Refer to Wiring Diagram .
  Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
1. OK : GO TO 5.
2. NG : GO TO 4.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F44, F101
- Harness for open and short between ECM and intake valve timing control solenoid valve and fuse
1. : Repair open circuit or short to ground or short to power in harness or connectors.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to "COMPONENT INSPECTION ".

OK or NG
1. OK : GO TO 6.
2. NG : Replace intake valve timing control solenoid valve.
CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to "COMPONENT INSPECTION ".

OK or NG
1. OK : GO TO 7.
2. NG : Replace crankshaft position sensor (POS).
CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to "COMPONENT INSPECTION ".

OK or NG
1. OK : GO TO 8.
2. NG : Replace camshaft position sensor (PHASE).
CHECK CAMSHAFT
Check accumulation of debris to the signal pick-up portion of the camshaft. Refer to CAMSHAFT in ENGINE MECHANICAL - 3.5L article.

OK or NG
1. OK : GO TO 9.
2. NG : Remove debris and clean the signal pick-up cutout of camshaft.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

For wiring diagram, refer to WIRING DIAGRAM for CKP sensor (POS), and WIRING DIAGRAM for CMP sensor (PHASE).
1. : INSPECTION END