DTC B1014: ACC Power Supply Circuit: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [07/2013 - ] .

NEXT: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2013 - ] .
   RESULT
   
   

   Result	Proceed to
   DTC B1014 is output	A
   DTC is not output	B

B → See step   7 

A: Go to next step 

1. Disconnect the 3A and 3E instrument panel junction block assembly connectors.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   3A-20 - Body ground	Ignition switch ACC	11 to 14 V
   3E-1 - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Instrument Panel Junction Block Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the instrument panel junction block assembly. Refer to REMOVAL [07/2013 - ] .
2. Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3E-1 - MB-9 (ACC)	No battery voltage is applied across terminals 3A-20 and 3A-12	10 kΩ or higher
   3E-1 - MB-9 (ACC)	Battery voltage is applied across terminals 3A-20 and 3A-12	Below 1 Ω
   3B-18 - MB-11 (GND)	Always	Below 1 Ω

NG → See step   8 

OK → See step   6 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [07/2013 - ] .

NEXT: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2013 - ] .
   RESULT
   
   

   Result	Proceed to
   DTC B1014 is output	A
   DTC is not output	B

B → See step   9 

A: Go to next step 

1. Disconnect the 3A and 3E instrument panel junction block assembly connectors.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   3A-20 - Body ground	Ignition switch ACC	11 to 14 V
   3E-1 - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Instrument Panel Junction Block Assembly)

   RESULT
   
   

   Result	Proceed to
   OK (w/o Smart Key System)	A
   OK (w/ Smart Key System)	B
   NG	C

B → See step   6 

C → REPAIR OR REPLACE HARNESS OR CONNECTOR 

A: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the instrument panel junction block assembly. Refer to REMOVAL [07/2013 - ] .
2. Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3E-1 - MB-9 (ACC)	Always	10 kΩ or higher
   3E-1 - MB-9 (ACC)	Battery positive (+) → 3A-20 Battery negative (-) → 3A-12 or 3A-13	Below 1 Ω
   3B-18 - MB-11 (GND)	Always	Below 1 Ω

NG → See step   10 

OK → See step   8 

1. Remove the instrument panel junction block assembly. Refer to REMOVAL [07/2013 - ] .
2. Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3B-18 - MB-11 (GND)	Always	Below 1 Ω
   3E-1 - MB-9 (ACC)	Always	10 kΩ or higher
   3E-1 - 3B-28	Always	10 kΩ or higher
   3E-1 - MB-9 (ACC)	Battery positive (+) → 3A-20 Battery negative (-) → 3A-12 or 3A-13	Below 1 Ω
   3E-1 - 3B-28	Battery positive (+) → 3A-20 Battery negative (-) → 3A-12 or 3A-13	Below 1 Ω

NG → See step   10 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3B-28 - D5-22 (ACC)	Always	Below 1 Ω
   3B-28 or D5-22 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   8