ELECTRONICALLY CONTROLLED BRAKE SYSTEM > Brake Control Warning Light does not Come ON

for Preparation Click here

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (Click here).

1. Check if the CAN communication system DTC is output (Click here for LHD, for Click here RHD).
   
   

   Result:

   
   

   Condition	Proceed To
   DTC is not output	A
   DTC is output	B

B	REPAIR CAN COMMUNICATION SYSTEM

A

1. Check if the multiplex communication system DTC is output (Click here).
   
   

   Result:

   
   

   Condition	Proceed To
   DTC is not output	A
   DTC is output	B

B	REPAIR MULTIPLEX COMMUNICATION SYSTEM

A

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch on.
   

3. Select the "ECB WARN LAMP" in the ACTIVE TEST and operate the brake control warning light by the intelligent tester.
   
   

   ABS / VSC / TRAC: 

   Item (Display)	Vehicle Condition/ Test Details	Diagnostic Note
   ECB WARN LAMP	Turns brake control warning light ON/OFF	Observe combination meter

4. Check that "ON" and "OFF" of the brake control warning lights are indicated on the combination meter when using the intelligent tester.
   

   OK:

   The brake control warning lights turn on or off in accordance with the operation using the intelligent tester.
   

   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 (Click here).

NG	Go to step 4

OK
REPLACE SKID CONTROL ECU

1. Check the combination meter assembly (Click here).
   

   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 (Click here).

NG	REPLACE COMBINATION METER ASSEMBLY

OK
END