DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [11/2016 - ]: Procedure

1. Inspect the illumination of each turn signal light.

   Result	Proceed to
   All RH turn signal lights or all LH turn signal lights do not blink	A
   RH side turn signal light does not illuminate	B
   LH side turn signal light does not illuminate	C

Result: 

B 

See step  4

Result: 

C 

See step  15

Result: 

A 

Go to next step 

1. Disconnect the F21 combination meter assembly connector.
2. RH side
   1. Disconnect the 4A instrument panel junction block assembly connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection	Condition	Specified Condition
      F21-13 (LR) - 4A-1	Always	Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection	Condition	Specified Condition
      F21-13 (LR) - Body ground	Always	10 kΩ or higher

3. LH side
   1. Disconnect the 4D instrument panel junction block assembly connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection	Condition	Specified Condition
      F21-7 (LL) - 4D-8	Always	Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection	Condition	Specified Condition
      F21-7 (LL) - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ]

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

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      4A-1 - 4F-7	Always	Below 1 Ω
      4A-1 - 4H-6	Always	Below 1 Ω
      4A-1 - 4A-15	Always	Below 1 Ω

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

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      4D-8 - 4F-5	Always	Below 1 Ω
      4D-8 - 4H-7	Always	Below 1 Ω
      4D-8 - 4D-20	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY: 

Refer to REMOVAL [02/2014 - ] .

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

1. Turn the power switch on (IG).
2. Set the headlight dimmer switch assembly to the right turn switch position.
3. Check the operation of the turn signal lights.

   Result	Proceed to
   Front turn signal light assembly does not blink	A
   Side turn signal light assembly does not blink	B
   Rear turn signal light assembly does not blink	C

Result: 

B 

See step  7

Result: 

C 

See step  13

Result: 

A 

Go to next step 

1. Disconnect the A25 headlight assembly RH connector.
2. Disconnect the 4F instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   A25-1 (B) - 4F-7	Always	Below 1 Ω
   A25-4 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   4F-7 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ] .

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-1 - 4F-7	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLIGHT ASSEMBLY RH: 

Refer to REMOVAL [11/2016 - ] .

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

1. Choose the model to be inspected.

   Result	Proceed to
   w/ Seat Position Memory	A
   w/o Seat Position Memory	B

Result: 

B 

See step  11

Result: 

A 

Go to next step 

1. Disconnect the H2 outer mirror control ECU assembly RH connector.
2. Disconnect the 4A instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   H2-11 (TRNI) - 4A-15	Always	Below 1 Ω
   H2-7 (GND) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   4A-15 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-1 - 4A-15	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

Result: 

OK 

Go to next step 

1. Replace the outer mirror control ECU assembly RH with a new or known good one.

   Refer to REMOVAL [02/2014 - ] .

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [02/2014 - ] .

   Body Electrical > Combination Meter > Trouble Codes 

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

Result: 

A 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH: 

Refer to REMOVAL [02/2014 - ] .

Result: 

B 

END 

1. Disconnect the H1 side turn signal light assembly RH connector.
2. Disconnect the 4A instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   H1-4 (B) - 4A-15	Always	Below 1 Ω
   H1-9 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   4A-15 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ] .

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-1 - 4A-15	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH: 

Refer to REMOVAL [02/2014 - ] .

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

1. Disconnect the M32 rear combination light assembly RH connector.
2. Disconnect the 4H instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   M32-4 (TRN) - 4H-6	Always	Below 1 Ω
   M32-6 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   4H-6 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-1 - 4H-6	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR COMBINATION LIGHT ASSEMBLY RH: 

Refer to REMOVAL [11/2016 - ] .

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

1. Turn the power switch on (IG).
2. Set the headlight dimmer switch assembly to the left turn switch position.
3. Check the operation of the turn signal lights.

   Result	Proceed to
   Front turn signal light assembly does not blink	A
   Side turn signal light assembly does not blink	B
   Rear turn signal light assembly does not blink	C

Result: 

B 

See step  18

Result: 

C 

See step  24

Result: 

A 

Go to next step 

1. Disconnect the A17 headlight assembly LH connector.
2. Disconnect the 4F instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   A17-1 (B) - 4F-5	Always	Below 1 Ω
   A17-4 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   A17-1 (B) - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4D-8 - 4F-5	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLGHT ASSEMBLY LH: 

Refer to REMOVAL [11/2016 - ] .

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

1. Choose the model to be inspected.

   Result	Proceed to
   w/ Seat Position Memory	A
   w/o Seat Position Memory	B

Result: 

B 

See step  22

Result: 

A 

Go to next step 

1. Disconnect the I2 outer mirror control ECU assembly LH connector.
2. Disconnect the 4D instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   I2-11 (TRNI) - 4D-20	Always	Below 1 Ω
   I2-7 (GND) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   4D-20 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ] .

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4D-8 - 4D-20	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

Result: 

OK 

Go to next step 

1. Replace the outer mirror control ECU assembly LH with a new or known good one.

   Refer to REMOVAL [02/2014 - ] .

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [02/2014 - ] .

   Body Electrical > Combination Meter > Trouble Codes 

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

Result: 

A 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH: 

Refer to REMOVAL [02/2014 - ] .

Result: 

B 

END 

1. Disconnect the I1 side turn signal light assembly LH connector.
2. Disconnect the 4D instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   I1-4 (B) - 4D-20	Always	Below 1 Ω
   I1-9 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   4D-20 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4D-8 - 4D-20	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH: 

Refer to REMOVAL [02/2014 - ] .

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .

1. Disconnect the M30 rear combination light assembly LH connector.
2. Disconnect the 4H instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   M30-4 (TRN) - 4H-7	Always	Below 1 Ω
   M30-6 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   4H-7 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [11/2016 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4D-8 - 4H-7	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR COMBINATION LIGHT ASSEMBLY LH: 

Refer to REMOVAL [11/2016 - ] .

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY: 

Refer to REMOVAL [11/2016 - ] .