Brake Warning Light does not Come ON

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster): Brake Warning Light does not Come ON

Brake Warning Light does not Come ON

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE: When replacing the brake actuator assembly, perform zero point calibration Vehicle Stability Control System (for Vacuum Brake Booster).

PROCEDURE

1. CHECK BRAKE WARNING LIGHT
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to ON.
(c) Check that the brake warning light comes on.
OK:
The brake warning light comes on.
NG -- CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY
2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)




(a) Disconnect the skid control ECU connector.
(b) Disconnect the C10 combination meter connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






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

3. INSPECT COMBINATION METER ASSEMBLY
(a) Turn the ignition switch off.
(b) Reconnect the skid control ECU connector.
(c) Connect a Techstream to the DLC3.
(d) Perform Active Test of the combination meter using the Techstream Data List / Active Test.
OK:
The brake warning light turns ON or OFF in accordance with the Techstream.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY