Toyota CH-R Service Manual: Open in Turn Signal Circuit (B1507,B1508)

Toyota CH-R Service Manual / Meter / Gauge / Display / Meter / Gauge System / Open in Turn Signal Circuit (B1507,B1508)

DESCRIPTION

These DTCs are stored when the combination meter assembly detects an open in a turn signal light circuit, or a short in a turn signal light circuit or the hazard warning light circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

B1507

Open in Turn Signal Circuit

When IG voltage is 9.5 V or more and the following condition is detected:

  • Open in turn signal light circuit
  • LED*2
  • Bulb*1
  • Harness or connector
  • Headlight ECU sub-assembly LH*2
  • Headlight ECU sub-assembly RH*2
  • Combination meter assembly

DTC stored

-

B1508

Short in Turn Signal / Hazard Flasher Circuit

When IG voltage is 9.5 V or more and the following condition is detected:

  • Short in turn signal light circuit or hazard warning light circuit
  • LED*2
  • Bulb*1
  • Harness or connector
  • Headlight ECU sub-assembly LH*2
  • Headlight ECU sub-assembly RH*2
  • Combination meter assembly

DTC stored

-
  • *1: for Halogen Headlight Type
  • *2: for LED Headlight Type

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the LEDs and bulbs for this system before performing the following procedure.
  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.

INSPECT LIGHTS

(a) Inspect the illumination of each turn signal light.

Result

Proceed to

RH side turn signal light does not illuminate.

A

LH side turn signal light does not illuminate.

B
B

GO TO STEP 8

A

2.

CHECK TURN SIGNAL LIGHTS (RH SIDE)

(a) Turn the ignition switch ON.

(b) Set the headlight dimmer switch assembly to the right turn switch position.

(c) Check the operation of the turn signal lights (RH side).

Result

Proceed to

Front turn signal light assembly (RH side) does not blink. (for LED Headlight Type)

A

Front turn signal light assembly (RH side) does not blink. (for Halogen Headlight Type)

B

Side turn signal light assembly (RH side) does not blink.

C

Rear turn signal light assembly (RH side) does not blink.

D
B

GO TO STEP 5

C

GO TO STEP 6

D

GO TO STEP 7

A

3.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND)

(a) Disconnect the A17 headlight ECU sub-assembly RH connector.

(b) Disconnect the F5 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A17-11 (TNS) - F5-7 (LR)

Always

Below 1 Ω

A17-12 (GND) - Body ground

Always

Below 1 Ω

A17-11 (TNS) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

INSPECT HEADLIGHT ECU SUB-ASSEMBLY RH

(a) Remove the Headlight ECU sub-assembly RH.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A17-11 (TNS) - B-9 (TURN+)

Always

Below 1 Ω

A17-12 (GND) - B-13 (TURN-)

Always

Below 1 Ω

A17-11 (TNS) - A17-12 (GND)

Always

10 kΩ or higher

*a

Component without harness connected

(Headlight ECU sub-assembly RH)
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH

5.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND)

(a) Disconnect the A29 headlight assembly RH connector.

(b) Disconnect the F5 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A29-4 (B) - F5-7 (LR)

Always

Below 1 Ω

A29-6 (E) - Body ground

Always

Below 1 Ω

A29-4 (B) - Body ground

Always

10 kΩ or higher
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY RH)

(a) Disconnect the F5 combination meter assembly connector.

(b) Disconnect the I8 outer rear view mirror assembly RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F5-7 (LR) - I8-1 (B)

Always

Below 1 Ω

I8-2 (E) - Body ground

Always

Below 1 Ω

I8-1 (B) - Body ground

Always

10 kΩ or higher
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.

CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND)

(a) Disconnect the M47 rear combination light assembly RH connector.

(b) Disconnect the F5 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

M47-4 (TRN) - F5-5 (TRNR)

Always

Below 1 Ω

M47-3 (E) - Body ground

Always

Below 1 Ω

M47-4 (TRN) - Body ground

Always

10 kΩ or higher
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

CHECK TURN SIGNAL LIGHTS (LH SIDE)

(a) Turn the ignition switch ON.

(b) Set the headlight dimmer switch assembly to the left turn switch position.

(c) Check the operation of the turn signal lights (LH side).

Result

Proceed to

Front turn signal light assembly (LH side) does not blink. (for LED Headlight Type)

A

Front turn signal light assembly (RH side) does not blink. (for Halogen Headlight Type)

B

Side turn signal light assembly (LH side) does not blink.

C

Rear turn signal light assembly (LH side) does not blink.

D
B

GO TO STEP 11

C

GO TO STEP 12

D

GO TO STEP 13

A

9.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT ECU SUB-ASSEMBLY LH OR BODY GROUND)

(a) Disconnect the A16 headlight ECU sub-assembly LH connector.

(b) Disconnect the F5 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A16-11 (TNS) - F5-13 (LL)

Always

Below 1 Ω

A16-12 (GND) - Body ground

Always

Below 1 Ω

A16-11 (TNS) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

10.

INSPECT HEADLIGHT ECU SUB-ASSEMBLY LH

(a) Remove the Headlight ECU sub-assembly LH.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A16-11 (TNS) - C-9 (TURN+)

Always

Below 1 Ω

A16-12 (GND) - C-13 (TURN-)

Always

Below 1 Ω

A16-11 (TNS) - A16-12 (GND)

Always

10 kΩ or higher

*a

Component without harness connected

(Headlight ECU sub-assembly LH)
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPLACE HEADLIGHT ECU SUB-ASSEMBLY

11.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND)

(a) Disconnect the A11 headlight assembly LH connector.

(b) Disconnect the F5 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A11-4 (B) - F5-13 (LL)

Always

Below 1 Ω

A11-6 (E) - Body ground

Always

Below 1 Ω

A11-4 (B) - Body ground

Always

10 kΩ or higher
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY LH OR BODY GROUND)

(a) Disconnect the F5 combination meter assembly connector.

(b) Disconnect the J7 outer rear view mirror assembly LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J7-1 (B) - F5-13 (LL)

Always

Below 1 Ω

J7-2 (E) - Body ground

Always

Below 1 Ω

J7-1 (B) - Body ground

Always

10 kΩ or higher
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.

CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND)

(a) Disconnect the M48 rear combination light assembly LH connector.

(b) Disconnect the F5 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F5-6 (TRNL) - M48-4 (TRN)

Always

Below 1 Ω

M48-3 (E) - Body ground

Always

Below 1 Ω

M48-4 (TRN) - Body ground

Always

10 kΩ or higher
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
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