DTC B1507-18: Turn Signal Light Circuit Current Below Threshold [11/2022 - ]: Procedure

1. Check the problem symptoms.

   Result

   Result	Proceed to
   LH side front turn signal light does not blink	A
   LH side rear turn signal light does not blink	B
   RH side front turn signal light does not blink	C
   RH side rear turn signal light does not blink	D

Result: 

B 

See step  7

Result: 

C 

See step  9

Result: 

D 

See step  14

Result: 

A 

See step  2

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for Bulb Type Clearance Light	A
   for LED Type Clearance Light	B

Result: 

B 

See step  5

Result: 

A 

See step  3

1. Interchange the front turn signal light socket LH with RH and connect the connectors.

   Refer to DISASSEMBLY [09/2021 - ]

2. Operate the turn signal switch and check that the LH side front turn signal light operates normally.

   HINT: 

   If the LH side front turn signal light operates normally, the front turn signal light socket is malfunctioning.

   Result

   Result	Proceed to
   LH side front turn signal light operates normally	A
   Problem symptoms do not change (LH side front turn signal light does not blink)	B

Result: 

A 

REPLACE FRONT TURN SIGNAL LIGHT SOCKET. Refer to  DISASSEMBLY [09/2021 - ] 

Result: 

B 

See step  4

1. Disconnect the A141 headlight assembly LH connector.
2. Disconnect the I5 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A141-1 (B) - I5-5 (LL)	Always	Below 1 Ω
   A141-2 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Interchange the headlight assembly LH with RH and connect the connectors.

   Refer to REMOVAL [11/2022 - ]

2. Operate the turn signal switch and check that the LH side front turn signal light operates normally.

   HINT: 

   If the LH side front turn signal light operates normally, the headlight assembly is malfunctioning.

   Result

   Result	Proceed to
   LH side front turn signal light operates normally	A
   Problem symptoms do not change (LH side front turn signal light does not blink)	B

Result: 

A 

REPLACE HEADLIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2022 - ] 

Result: 

B 

See step  6

1. Disconnect the A133 headlight assembly LH connector.
2. Disconnect the I5 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A133-2 (B) - I5-5 (LL)	Always	Below 1 Ω
   A133-1 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Interchange the rear combination light assembly LH with RH and connect the connectors.

   Refer to REMOVAL [09/2021 - ]

2. Operate the turn signal switch and check that the LH side rear turn signal light operates normally.

   HINT: 

   If the LH side rear turn signal light operates normally, the rear turn signal light socket is malfunctioning.

   Result

   Result	Proceed to
   LH side rear turn signal light operates normally	A
   Problem symptoms do not change (LH side rear turn signal light does not blink)	B

Result: 

A 

REPLACE COMBINATION LIGHT ASSEMBLY LH. Refer to  REMOVAL [09/2021 - ] 

Result: 

B 

See step  8

1. Disconnect the S14 rear combination light assembly LH connector.
2. Disconnect the I5 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   S14-4 (B) - I5-22 (TRNL)	Always	Below 1 Ω
   S14-3 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   for Bulb Type Clearance Light	A
   for LED Type Clearance Light	B

Result: 

B 

See step  12

Result: 

A 

See step  10

1. Interchange the front turn signal light socket RH with LH and connect the connectors.

   Refer to DISASSEMBLY [09/2021 - ]

2. Operate the turn signal switch and check that the RH side front turn signal light operates normally.

   HINT: 

   If the RH side front turn signal light operates normally, the front turn signal light socket is malfunctioning.

   Result

   Result	Proceed to
   RH side front turn signal light operates normally	A
   Problem symptoms do not change (RH side front turn signal light does not blink)	B

Result: 

A 

REPLACE FRONT TURN SIGNAL LIGHT SOCKET. Refer to  DISASSEMBLY [09/2021 - ] 

Result: 

B 

See step  11

1. Disconnect the A146 headlight assembly RH connector.
2. Disconnect the I5 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A146-1 (B) - I5-6 (LR)	Always	Below 1 Ω
   A146-2 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Interchange the headlight assembly RH with LH and connect the connectors.

   Refer to REMOVAL [11/2022 - ]

2. Operate the turn signal switch and check that the RH side front turn signal light operates normally.

   HINT: 

   If the RH side front turn signal light operates normally, the headlight assembly is malfunctioning.

   Result

   Result	Proceed to
   RH side front turn signal light operates normally	A
   Problem symptoms do not change (RH side front turn signal light does not blink)	B

Result: 

A 

REPLACE HEADLIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2022 - ] 

Result: 

B 

See step  13

1. Disconnect the A136 headlight assembly RH connector.
2. Disconnect the I5 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A136-2 (B) - I5-6 (LR)	Always	Below 1 Ω
   A136-1 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Interchange the rear combination light assembly RH with LH and connect the connectors.

   Refer to REMOVAL [09/2021 - ]

2. Operate the turn signal switch and check that the RH side rear turn signal light operates normally.

   HINT: 

   If the RH side rear turn signal light operates normally, the rear turn signal light socket is malfunctioning.

   Result

   Result	Proceed to
   RH side rear turn signal light operates normally	A
   Problem symptoms do not change (RH side rear turn signal light does not blink)	B

Result: 

A 

REPLACE COMBINATION LIGHT ASSEMBLY RH. Refer to  REMOVAL [09/2021 - ] 

Result: 

B 

See step  15

1. Disconnect the S15 rear combination light assembly RH connector.
2. Disconnect the I5 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   S15-4 (B) - I5-21 (TRNR)	Always	Below 1 Ω
   S15-3 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR