Brake Control Warning Light Remains ON

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: Brake Control Warning Light Remains ON

Brake Control Warning Light Remains ON

DESCRIPTION

The skid control ECU is connected to the combination meter via the CAN and multiplex communications. The brake control warning light illuminates to inform the driver that there is a problem in the Electronically Controlled Brake, or a problem in the brake system that has no influence on driving.

WIRING DIAGRAM









INSPECTION PROCEDURE
NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration Initialization.

PROCEDURE

1. CHECK SKID CONTROL ECU (BS1, BS2 VOLTAGE)




(a) Measure the voltage of the connectors.
HINT: Measure the voltage from behind the connector with the connector connected to the skid control ECU.

:






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

2. PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE CONTROL WARNING LIGHT)
(a) Select the Active Test, generate a control command, and then check that the brake control warning light operates.

ABS / VSC / TRAC:





*: Electronically Controlled Brake
OK:
The brake control warning light turns on or off.
NG -- REPAIR OR REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE SKID CONTROL ECU