TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.161

BAT/Brakes, ABS & TRAC Systems — TRAC Indicator Light Circuit, page 162

162 / 167
p.163
TRAC Indicator Light Circuit — MK4 Supra Brakes, ABS & TRAC Systems, page 162
100%
Page text (OCR transcript)
BR–162
BRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC)

TRAC Indicator Light Circuit

CIRCUIT DESCRIPTION

The TRAC indicator blinks during TRAC operation.
This indicator is also used for warnings when the trouble occurs and for displaying diagnostic trouble codes.

WIRING DIAGRAM

J/B No.1
GAUGE
Y 9 7 W 11 W 24 IND
C10 C12 IF2 T9
TRAC
Indicator
Light
DLC2
TRAC ECU

R07074

INSPECTION PROCEDURES
Troubleshoot in accordance with flow chart instructions for each trouble symptom.

TRAC Indicator light does not light up
Go to Combination Meter Troubleshooting on page BE–43.

TRAC Indicator light remains ON

1 Check diagnostic trouble code (See page BR–126).

Indicator light remains ON | Output NG Code | Repair circuit indicated by the code output.

2 Check for short in harness and connector between TRAC ECU and TRAC indicator light (See page IN–30).

OK NG Repair or replace harness or connector.

Check and replace TRAC ECU.