B1508

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: B1507, B1508: Open in Turn Signal Circuit
B1508 - Short in Turn Signal / Hazard Flasher Circuit

DESCRIPTION

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





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Inspect the bulbs for this system before performing the following inspection procedure.

PROCEDURE

1. INSPECT LIGHTS

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

Result:





B -- CHECK HARNESS AND CONNECTOR (FRONT TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

C -- CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

D -- CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the I17 combination meter assembly connector.

(b) Disconnect the 3A instrument panel junction block assembly connector.

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

Standard Resistance (Check for Open):

for LH





for RH





Standard Resistance (Check for Short):

for LH





for RH





Result:





B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR

3. CHECK HARNESS AND CONNECTOR (FRONT TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the A77*1 or A74*2 front turn signal light connector.

*1: for RH

*2: for LH

(b) Disconnect the 3D instrument panel junction block assembly connector.

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

Standard Resistance (Check for Open):

for LH





for RH





Standard Resistance (Check for Short):

for LH





for RH





Result:





B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR

4. CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the T13*1 or T8*2 rear turn signal light connector.

*1: for RH

*2: for LH

(b) Disconnect the 3C instrument panel junction block assembly connector.

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

Standard Resistance (Check for Open):

for LH





for RH





Standard Resistance (Check for Short):

for LH





for RH





Result:





B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR

5. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the J7*1 or K7*2 outer rear view mirror assembly connector.

*1: for RH

*2: for LH

(b) Disconnect the 3A or 3B instrument panel junction block assembly connector.

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

Standard Resistance (Check for Open):

for LH





for RH





Standard Resistance (Check for Short):

for LH





for RH





Result:





B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR

6. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly Removal.





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

Standard Resistance:





NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Removal

OK -- REPLACE COMBINATION METER ASSEMBLY Removal