VEHICLE STABILITY CONTROL SYSTEM Brake Warning Light does not Come ON

DESCRIPTION

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

WIRING DIAGRAM

Refer to Brake Warning Light Remains ON Click here.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check if a CAN communication system DTC is output Click here.

      Result
      Result Proceed to DTC is not output A DTC is output B

   
   

   B

   INSPECT CAN COMMUNICATION SYSTEM Click here

   A

2. CHECK MULTIPLEX COMMUNICATION SYSTEM

   
   

   1. Check if a multiplex communication system DTC is output Click here.

      Result
      Result Proceed to DTC is not output A DTC is output B

   
   

   B

   INSPECT MULTIPLEX COMMUNICATION SYSTEM Click here

   A

3. CHECK BRAKE WARNING LIGHT

   
   

   1. Disconnect the skid control ECU connectors.

   2. Turn the engine switch on (IG).

   3. Check that the brake warning light comes on.

      OK
      The brake warning light comes on.

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part Click here.

   
   

   NG

   INSPECT COMBINATION METER ASSEMBLY Click here

   OK

   REPLACE SKID CONTROL ECU Click here

4. INSPECT COMBINATION METER ASSEMBLY

   
   

   1. Turn the engine switch off.

   2. Reconnect the skid control ECU connectors.

   3. Perform the Active Test of the combination meter (meter CPU) using the intelligent tester Click here.

   4. Check the combination meter.

      OK
      The brake warning light turns on or off in accordance with the intelligent tester operation.

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Click here.

   
   

   NG

   REPLACE COMBINATION METER ASSEMBLY Click here

   OK

   REPLACE SKID CONTROL ECU Click here