ABS Warning Light does not Come ON

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: ABS Warning Light does not Come ON

ABS Warning Light does not Come ON

DESCRIPTION

The skid control ECU is connected to the combination meter via CAN and multiplex communications.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
When replacing the brake actuator assembly, perform zero point calibration Calibration.

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM
(a) Check if a CAN communication system DTC is output Reading and Clearing Diagnostic Trouble Codes.
Result:






B -- INSPECT CAN COMMUNICATION SYSTEM
A -- Continue to next step.
2. CHECK MULTIPLEX COMMUNICATION SYSTEM
(a) Check if a multiplex communication system DTC is output Reading and Clearing Diagnostic Trouble Codes.
Result:






B -- INSPECT MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.
3. CHECK ABS WARNING LIGHT
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to the ON position.
(c) Check that the ABS warning light comes on.
OK:
The ABS warning light comes on.
(d) Connect the connector.
HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part Problem Symptoms Table.

NG -- INSPECT COMBINATION METER ASSEMBLY
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY
4. INSPECT COMBINATION METER ASSEMBLY
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Perform Active Test of the combination meter (meter CPU) using the Techstream Meter / Gauge System.
OK:
The ABS warning light blinks or turns off in accordance with the Techstream.
HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY