DTC B1507-18: Turn Signal Light Circuit Current Below Threshold [11/2021 - 12/2023]: Procedure

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/o Advanced Drive	A
   w/ Advanced Drive	B

Result: 

B 

See step  31

Result: 

A 

See step  2

1. Inspect the illumination of each turn signal light.

   Result

   Result	Proceed to
   RH side turn signal light or LH side turn signal light does not illuminate.	A
   Side turn signal light LH and rear turn signal light LH does not blink.	B
   Front turn signal light LH does not blink.	C
   Side turn signal light LH does not blink.	D
   Rear turn signal light LH does not blink.	E
   Side turn signal light RH and rear turn signal light RH does not blink.	F
   Front turn signal light RH does not blink.	G
   Side turn signal light RH does not blink.	H
   Rear turn signal light RH does not blink.	I

Result: 

A 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

C 

See step  6

Result: 

D 

See step  9

Result: 

E 

See step  15

Result: 

F 

See step  17

Result: 

G 

See step  20

Result: 

H 

See step  23

Result: 

I 

See step  29

Result: 

B 

See step  3

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Reverse Shift-linked Mirror	A
   w/o Reverse Shift-linked Mirror	B

Result: 

B 

See step  5

Result: 

A 

See step  4

Pre-procedure1

• Disconnect the E25 front multiplex network door ECU LH connector.
• Disconnect the D42 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E25-20 (TRNI) - D42-11(TRNL)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Pre-procedure1

• Disconnect the E29 outer mirror retractor LH connector.
• Disconnect the D42 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E29-16 (B) - D42-11(TRNL)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Advanced Park	A
   w/o Advanced Park	B

Result: 

B 

See step  8

Result: 

A 

See step  7

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ] 

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Reverse Shift-linked Mirror	A
   w/o Reverse Shift-linked Mirror	B

Result: 

B 

See step  13

Result: 

A 

See step  10

Pre-procedure1

• Disconnect the E25 front multiplex network door ECU LH connector.
• Disconnect the D42 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E25-20 (TRNI) - D42-11 (TRNL)	Always	Below 1 Ω	Ω
  E25-1 (GND) - Body ground	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  11

Refer to INSPECTION [11/2020 - 12/2023]

Result

Result: 

OK 

REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH. Refer to  DISASSEMBLY [11/2021 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - 12/2023] 

Result: 

NG 

See step  12

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPLACE OUTER MIRROR RETRACTOR LH. Refer to  DISASSEMBLY [11/2020 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - ] 

Result: 

NG 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2020 - ] 

Refer to INSPECTION [11/2020 - 12/2023]

Result

Result: 

NG 

REPLACE OUTER MIRROR RETRACTOR LH. Refer to  DISASSEMBLY [11/2020 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - ] 

Result: 

OK 

See step  14

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2020 - ] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE REAR COMBINATION LIGHT CORD LH. Refer to  REMOVAL [11/2021 - ] 

Result: 

OK 

See step  16

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE REAR TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ] 

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Reverse Shift-linked Mirror	A
   w/o Reverse Shift-linked Mirror	B

Result: 

B 

See step  19

Result: 

A 

See step  18

Pre-procedure1

• Disconnect the E7 front multiplex network door ECU RH connector.
• Disconnect the D42 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E7-20 (TRNI) - D42-5 (TRNR)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Pre-procedure1

• Disconnect the E11 outer mirror retractor RH connector.
• Disconnect the D42 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E11-16 (B) - D42-5 (TRNR)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Advanced Park	A
   w/o Advanced Park	B

Result: 

B 

See step  22

Result: 

A 

See step  21

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ] 

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Reverse Shift-linked Mirror	A
   w/o Reverse Shift-linked Mirror	B

Result: 

B 

See step  27

Result: 

A 

See step  24

Pre-procedure1

• Disconnect the E7 front multiplex network door ECU RH connector.
• Disconnect the D42 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E7-20 (TRNI) - D42-5 (TRNR)	Always	Below 1 Ω	Ω
  E7-1 (GND) - Body ground	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  25

Refer to INSPECTION [11/2020 - 12/2023]

Result

Result: 

OK 

REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH. Refer to  DISASSEMBLY [11/2021 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - 12/2023] 

Result: 

NG 

See step  26

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPLACE OUTER MIRROR RETRACTOR RH. Refer to  DISASSEMBLY [11/2020 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - ] 

Result: 

NG 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2020 - ] 

Refer to INSPECTION [11/2020 - 12/2023]

Result

Result: 

NG 

REPLACE OUTER MIRROR RETRACTOR RH. Refer to  DISASSEMBLY [11/2020 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - ] 

Result: 

OK 

See step  28

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2020 - ] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE REAR COMBINATION LIGHT CORD RH. Refer to  REMOVAL [11/2021 - ] 

Result: 

OK 

See step  30

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE REAR TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ] 

1. Inspect the illumination of each turn signal light.

   Result

   Result	Proceed to
   RH side turn signal light or LH side turn signal light does not illuminate.	A
   Side turn signal light LH and rear turn signal light LH does not blink.	B
   Front turn signal light LH does not blink.	C
   Side turn signal light LH does not blink.	D
   Rear turn signal light LH does not blink.	E
   Side turn signal light RH and rear turn signal light RH does not blink.	F
   Front turn signal light RH does not blink.	G
   Side turn signal light RH does not blink.	H
   Rear turn signal light RH does not blink.	I

Result: 

A 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

C 

See step  33

Result: 

D 

See step  36

Result: 

E 

See step  39

Result: 

F 

See step  41

Result: 

G 

See step  42

Result: 

H 

See step  45

Result: 

I 

See step  48

Result: 

B 

See step  32

Pre-procedure1

• Disconnect the E25 front multiplex network door ECU LH connector.
• Disconnect the D43 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E25-20 (TRNI) - D43-22(TRNL)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Advanced Park	A
   w/o Advanced Park	B

Result: 

B 

See step  35

Result: 

A 

See step  34

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ] 

Pre-procedure1

• Disconnect the E25 front multiplex network door ECU LH connector.
• Disconnect the D43 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E25-20 (TRNI) - D43-22 (TRNL)	Always	Below 1 Ω	Ω
  E25-1 (GND) - Body ground	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  37

Refer to INSPECTION [11/2020 - 12/2023]

Result

Result: 

OK 

REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH. Refer to  DISASSEMBLY [11/2021 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - 12/2023] 

Result: 

NG 

See step  38

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPLACE OUTER MIRROR RETRACTOR LH. Refer to  DISASSEMBLY [11/2020 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - ] 

Result: 

NG 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2020 - ] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE REAR COMBINATION LIGHT CORD LH. Refer to  REMOVAL [11/2021 - ] 

Result: 

OK 

See step  40

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE REAR TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ] 

Pre-procedure1

• Disconnect the E7 front multiplex network door ECU RH connector.
• Disconnect the D43 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E7-20 (TRNI) - D43-38 (TRNR)	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Check vehicle condition.

   Result

   Result	Proceed to
   w/ Advanced Park	A
   w/o Advanced Park	B

Result: 

B 

See step  44

Result: 

A 

See step  43

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE FRONT TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ] 

Pre-procedure1

• Disconnect the E7 front multiplex network door ECU RH connector.
• Disconnect the D43 combination meter assembly connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  E7-20 (TRNI) - D43-38 (TRNR)	Always	Below 1 Ω	Ω
  E7-1 (GND) - Body ground	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  46

Refer to INSPECTION [11/2020 - 12/2023]

Result

Result: 

OK 

REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH. Refer to  DISASSEMBLY [11/2021 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - 12/2023] 

Result: 

NG 

See step  47

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPLACE OUTER MIRROR RETRACTOR RH. Refer to  DISASSEMBLY [11/2020 - 12/2022]  , or refer to  DISASSEMBLY [12/2022 - ] 

Result: 

NG 

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2020 - ] 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE REAR COMBINATION LIGHT CORD RH. Refer to  REMOVAL [11/2021 - ] 

Result: 

OK 

See step  49

Refer to INSPECTION [11/2020 - ]

Result

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE REAR TURN SIGNAL LIGHT LED. Refer to  DISASSEMBLY [11/2020 - ]