ABS Warning Light Circuit

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: ABS Warning Light Circuit
- ABS Warning Light Circuit

DESCRIPTION

If the ECU detects trouble, it illuminates the ABS warning light and prohibits ABS control. At this time, the ECU records a DTC in memory.

Connecting terminals TC and CG of the DLC3 blinks the ABS warning light and outputs the DTC.

WIRING DIAGRAM





INSEPCTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (ABS WARNING LIGHT)

(a) Using the Techstream Active Test, generate a control command and then check that the ABS warning light operates.

ABS/VSC/TRAC





OK:

ABS warning light is turned on or off in accordance with Techstream.

OK -- REPLACE SKID CONTROL ECU
NG -- Continue to next step.

2. CHECK MULTIPLEX COMMUNICATION SYSTEM (SKID CONTROL ECU - COMBINATION METER)

(a) Check for open and short circuits in the multiplex communication system between the skid control ECU and combination meter.

NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

3. CHECK COMBINATION METER (ABS WARNING LIGHT)

(a) Check the combination meter Problem Symptoms Table.

NG -- REPAIR OR REPLACE COMBINATION METER

OK -- REPLACE SKID CONTROL ECU