DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [09/2014 - 11/2017]: Procedure

1. Inspect the illumination of each turn signal light.

   Result

   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  3

Result: 

C 

See step  16

Result: 

A 

See step  2

1. RH side
   1. Disconnect the O4 combination meter assembly connector.
   2. Disconnect the 4A instrument panel junction block assembly connector.
   3. Disconnect the R12 outer mirror control ECU assembly RH connector*1.
   4. Disconnect the R7 side turn signal light assembly RH connector*2.
      1. *1: w/ Seat Position Memory
      2. *2: w/o Seat Position Memory
   5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection	Condition	Specified Condition
      O4-7 (LR) - 4A-5	Always	Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection	Condition	Specified Condition
      O4-7 (LR) - Body ground	Always	10 kΩ or higher

2. LH side
   1. Disconnect the O4 combination meter assembly connector.
   2. Disconnect the 4A instrument panel junction block assembly connector.
   3. Disconnect the S12 outer mirror control ECU assembly LH connector*1.
   4. Disconnect the S7 side turn signal light assembly LH connector*2.
      1. *1: w/ Seat Position Memory
      2. *2: w/o Seat Position Memory
   5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection	Condition	Specified Condition
      O4-13 (LL) - 4A-6	Always	Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection	Condition	Specified Condition
      O4-13 (LL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Turn the engine 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 (RH side).

   Result

   Result	Proceed to
   Front turn signal light assembly (RH side) does not blink.	A
   Side turn signal light assembly (RH side) does not blink.	B
   Rear turn signal light assembly (RH side) does not blink.	C

Result: 

B 

See step  9

Result: 

C 

See step  14

Result: 

A 

See step  4

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for Single Beam Headlight	A
   for Triple Beam Headlight	B

Result: 

B 

See step  7

Result: 

A 

See step  5

1. Disconnect the A1 headlight assembly RH connector.
2. Disconnect the 4C 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
   A1-6 - 4C-8	Always	Below 1 Ω
   A1-3 - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   A1-6 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [09/2014 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-5 - 4C-8	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

1. Disconnect the D2 clearance light assembly RH connector.
2. Disconnect the 4C 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
   D2-1 (B) - 4C-8	Always	Below 1 Ω
   D2-2 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   D2-1 (B) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  8

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [09/2014 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-5 - 4C-8	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CLEARANCE LIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

1. Choose the model to be inspected.

   Result

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

Result: 

B 

See step  13

Result: 

A 

See step  10

1. Disconnect the O4 combination meter assembly connector.
2. Disconnect the R12 outer mirror control ECU assembly RH connector.
3. Disconnect the 4A instrument panel junction block assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   R12-11 (TRNI) - O4-7 (LR)	Always	Below 1 Ω
   R12-7 (GND) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   O4-7 (LR) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  11

1. Disconnect the R13 outer mirror control ECU assembly RH connector.
2. Disconnect the R7 side turn signal light assembly RH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   R3-16 (TRN+) - R7-16 (B)	Always	Below 1 Ω
   R13-12 (HTR-) - R7-12 (-)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   R7-16 (B) - Body ground	Always	10 kΩ or higher
   R7-12 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  12

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

   Refer to REMOVAL [09/2014 - ]

2. Check for the DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - ]

   Body Electrical > Combination Meter > Trouble Codes 

   Result

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

Result: 

A 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

B 

END 

1. Disconnect the O4 combination meter assembly connector.
2. Disconnect the R7 side turn signal light assembly RH connector.
3. Disconnect the 4A instrument panel junction block assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   R7-16 (B) - O4-7 (LR)	Always	Below 1 Ω
   R7-12 (-) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   O4-7 (LR) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the U5 rear combination light assembly RH 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
   U5-4 (TRN) - 4D-18	Always	Below 1 Ω
   U5-3 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   U5-4 (TRN) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  15

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [09/2014 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-5 - 4D-18	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR COMBINATION LIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

1. Turn the engine 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 (LH side).

   Result

   Result	Proceed to
   Front turn signal light assembly (LH side) does not blink.	A
   Side turn signal light assembly (LH side) does not blink.	B
   Rear turn signal light assembly (LH side) does not blink.	C

Result: 

B 

See step  22

Result: 

C 

See step  27

Result: 

A 

See step  17

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for Single Beam Headlight	A
   for Triple Beam Headlight	B

Result: 

B 

See step  20

Result: 

A 

See step  18

1. Disconnect the A30 headlight assembly LH connector.
2. Disconnect the 4C 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
   A30-6 (B) - 4C-6	Always	Below 1 Ω
   A30-3 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   A30-6 (B) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  19

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [09/2014 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

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

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

1. Disconnect the D4 clearance light assembly LH connector.
2. Disconnect the 4C 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
   D4-1 (B) - 4C-6	Always	Below 1 Ω
   D4-2 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   D4-1 (B) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  21

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [09/2014 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

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

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CLEARANCE LIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

1. Choose the model to be inspected.

   Result

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

Result: 

B 

See step  26

Result: 

A 

See step  23

1. Disconnect the O4 combination meter assembly connector.
2. Disconnect the S12 outer mirror control ECU assembly LH connector.
3. Disconnect the 4A instrument panel junction block assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   S12-11 (TRNI) - O4-13 (LL)	Always	Below 1 Ω
   S12-7 (GND) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   O4-13 (LL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  24

1. Disconnect the S13 outer mirror control ECU assembly LH connector.
2. Disconnect the S7 side turn signal light assembly LH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   S13-16 (TRN+) - S7-16 (B)	Always	Below 1 Ω
   S13-12 (HTR-) - S7-12 (-)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   S7-16 (B) - Body ground	Always	10 kΩ or higher
   S7-12 (-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  25

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

   Refer to REMOVAL [09/2014 - ]

2. Check for the DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - ]

   Body Electrical > Combination Meter > Trouble Codes 

   Result

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

Result: 

A 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

B 

END 

1. Disconnect the O4 combination meter assembly connector.
2. Disconnect the S7 side turn signal light assembly LH connector.
3. Disconnect the 4A instrument panel junction block assembly connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   S7-16 (B) - O4-13 (LL)	Always	Below 1 Ω
   S7-12 (-) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   O4-13 (LL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the U41 rear combination 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
   U41-4 (TRN) - 4D-17	Always	Below 1 Ω
   U41-3 (E) - Body ground	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   U41-4 (TRN) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  28

1. Remove the instrument panel junction block assembly.

   Refer to REMOVAL [09/2014 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-6 - 4D-17	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE REAR COMBINATION LIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2014 - 03/2019] 

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [09/2014 - ]