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.

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   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

   
   
   • AClick here
   • B

     INSPECT CAN COMMUNICATION SYSTEMClick here

2. Click here

   PERFORM ACTIVE TEST USING GTS (BRAKE WARNING LIGHT)

   
   

   1. Select the Active Test on the GTS.

      Click here

      
      
      1. Chassis > ABS/VSC/TRC > Active Test

         Tester Display	Measurement Item	Control Range	Diagnostic Note
         Brake Warning Light	Brake warning light	Warning light ON/OFF	Can be observed on the combination meter assembly

      2. 
         
         10. 
             
      
      
      1. Chassis > ABS/VSC/TRC > Data List

         Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
         Brake Warning Light	Brake warning light	ON or OFF	ON: Warning light on OFF: Warning light off	-

      2. 
         
         10. 
             
      
      
      1. Chassis > ABS/VSC/TRC > Active Test

         Active Test Display
         Brake Warning Light

         Data List Display
         Brake Warning Light

      2. 
         
         1. 
            
      3. 
         
         11. 
             
         12. 
             

   2. When performing the Brake Warning Light Active Test, check Brake Warning Light in the Data List.

      Result
      Result Proceed to Brake warning light in the Data List does not change using the Active Test. A Brake warning light in the Data List turns ON/OFF using the Active Test. B

      Tip:

      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

   
   
   • A

     REPLACE BRAKE ACTUATOR ASSEMBLY for LHD:Click here

     REPLACE BRAKE ACTUATOR ASSEMBLY for RHD:Click here

   • BClick here
3. Click here

   INSPECT COMBINATION METER ASSEMBLY

   
   

   1. Turn the engine switch off.

   2. Perform an Active Test of the combination meter assembly using the GTS.

      Click here

      
      
      1. Body Electrical > Combination Meter > Active Test

         Tester Display
         Indicat. Lamp Brake

      2. 
         
         1. 
            
      3. 
         
         11. 
             

   3. Check the combination meter assembly.

      OK
      The brake warning light turns on or off in accordance with the Active Test operation.

      Tip:

      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

      Result
      Proceed to OK NG

   
   
   • OK

     REPLACE BRAKE ACTUATOR ASSEMBLY for LHD:Click here

     REPLACE BRAKE ACTUATOR ASSEMBLY for RHD:Click here

   • NG

     INSPECT METER / GAUGE SYSTEMClick here