VEHICLE STABILITY CONTROL SYSTEM Brake Warning Light does not Come ON

DESCRIPTION

The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check if CAN communication system DTCs are output Click here.

      Result
      Result Proceed to DTCs are not output. A DTCs are output. B

   
   

   B

   INSPECT CAN COMMUNICATION SYSTEM Click here

   A

2. CHECK BRAKE WARNING LIGHT

   
   

   1. Disconnect the A40 skid control ECU (brake actuator assembly) connector.

   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 parts Click here.

   
   

   NG

   INSPECT COMBINATION METER ASSEMBLY Click here

   OK

   REPLACE BRAKE ACTUATOR ASSEMBLY Click here

3. INSPECT COMBINATION METER ASSEMBLY

   
   

   1. Turn the engine switch off.

   2. Reconnect the A40 skid control ECU (brake actuator assembly) connector.

   3. Perform an Active Test of the combination meter assembly (meter CPU) using the GTS Click here.

   4. Check the combination meter assembly.

      OK
      The brake warning light turns on or off in accordance with the Active Test 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 before replacing parts Click here.

   
   

   NG

   REPLACE COMBINATION METER ASSEMBLY Click here

   OK

   REPLACE BRAKE ACTUATOR ASSEMBLY Click here