DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [10/2013 - ]: Procedure

1. Inspect the illumination of each turn signal light.

   Result

   Result	Proceed to
   Turn signal lights for one side do not illuminate.	A
   Front turn signal light does not illuminate.	B
   Rear turn signal light does not illuminate.	C
   Side turn signal light does not illuminate (w/ Seat Position Memory).	D
   Side turn signal light does not illuminate (w/o Seat Position Memory).	E

B → See step   4 

C → See step   6 

D → See step   8 

E → See step   11 

A: Go to next step 

1. Disconnect the D8 combination meter assembly connector.
2. Disconnect the 3A instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   D8-7 (LL) - 3A-20	Always	Below 1 Ω

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   D8-13 (LR) - 3A-37	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   D8-7 (LL) - Body ground	Always	10 kΩ or higher

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   D8-13 (LR) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to REMOVAL [10/2013 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   for LH 

   for RH 

   Tester Connection	Condition	Specified Condition
   3A-20 - 3D-10	Always	Below 1 Ω
   3A-20 - 3C-22	Always	Below 1 Ω
   3A-20 - 3A-40	Always	Below 1 Ω

   Tester Connection	Condition	Specified Condition
   3A-37 - 3D-5	Always	Below 1 Ω
   3A-37 - 3C-19	Always	Below 1 Ω
   3A-37 - 3B-32	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

NG → See step   14 

OK → See step   13 

1. Disconnect the A16*1 or A43*2 headlight assembly connector.
   • *1: for LH
   • *2: for RH
2. Disconnect the 3D instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   A16-1 - 3D-10	Always	Below 1 Ω
   A16-3 - Body ground	Always	Below 1 Ω

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   A43-1 - 3D-5	Always	Below 1 Ω
   A43-3 - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   A16-1 - Body ground	Always	10 kΩ or higher

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   A43-1 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to REMOVAL [10/2013 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   for LH 

   for RH 

   Tester Connection	Condition	Specified Condition
   3A-20 - 3D-10	Always	Below 1 Ω

   Tester Connection	Condition	Specified Condition
   3A-37 - 3D-5	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

NG → See step   14 

OK → See step   15 

1. Disconnect the O9*1 or O13*2 rear combination light assembly connector.
   • *1: for LH
   • *2: for RH
2. Disconnect the 3C instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   O9-3 (TRN) - 3C-22	Always	Below 1 Ω
   O9-4 (E) - Body ground	Always	Below 1 Ω

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   O13-3 (TRN) - 3C-19	Always	Below 1 Ω
   O13-4 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   O9-3 (TRN) - Body ground	Always	10 kΩ or higher

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   O13-3 (TRN) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to REMOVAL [10/2013 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   for LH 

   for RH 

   Tester Connection	Condition	Specified Condition
   3A-20 - 3C-22	Always	Below 1 Ω

   Tester Connection	Condition	Specified Condition
   3A-37 - 3C-19	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

NG → See step   14 

OK → See step   16 

1. Disconnect the G12*1 or F10*2 outer mirror control ECU assembly connector.
   • *1: for LH
   • *2: for RH
2. Disconnect the 3A*1 or 3B*2 instrument panel junction block assembly connector.
   • *1: for LH
   • *2: for RH
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   G12-11 (TRNI) - 3A-40	Always	Below 1 Ω

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   F10-11 (TRNI) - 3B-32	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   G12-11 (TRNI) - Body ground	Always	10 kΩ or higher

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   F10-11 (TRNI) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to REMOVAL [10/2013 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   for LH 

   for RH 

   Tester Connection	Condition	Specified Condition
   3A-20 - 3A-40	Always	Below 1 Ω

   Tester Connection	Condition	Specified Condition
   3A-37 - 3B-32	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

NG → See step   14 

OK: Go to next step 

1. Remove the outer mirror control ECU assembly. Refer to REMOVAL [10/2013 - ] .
2. Recheck for DTCs. Refer to DTC CHECK / CLEAR [10/2013 - ] .

   Result

   Result	Proceed to
   DTCs are not output.	A
   DTCs are output.	B

B → See step   17 

A → END 

1. Disconnect the G9*1 or F7*2 headlight assembly connector.
   • *1: for LH
   • *2: for RH
2. Disconnect the 3A*1 or 3B*2 instrument panel junction block assembly connector.
   • *1: for LH
   • *2: for RH
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   G9-4 (B) - 3A-40	Always	Below 1 Ω
   G9-5 (-) - Body ground	Always	Below 1 Ω

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   F7-4 (B) - 3B-32	Always	Below 1 Ω
   F7-5 (-) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   FOR LH
   
   

   Tester Connection	Condition	Specified Condition
   G9-4 (B) - Body ground	Always	10 kΩ or higher

   FOR RH
   
   

   Tester Connection	Condition	Specified Condition
   F7-4 (B) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to REMOVAL [10/2013 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   for LH 

   for RH 

   Tester Connection	Condition	Specified Condition
   3A-20 - 3A-40	Always	Below 1 Ω

   Tester Connection	Condition	Specified Condition
   3A-37 - 3B-32	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

NG → See step   14 

OK → See step   17