ANTI-LOCK BRAKE SYSTEM ABS Warning Light does not Come ON

DESCRIPTION

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

WIRING DIAGRAM

Refer to ABS Warning Light Remains ON.

Click here

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check if CAN communication system DTCs are output.

      for LHD:Click here

      for RHD:Click here

      Result
      Proceed to DTC is not output DTC is output

   
   
   • DTC is not outputClick here
   • DTC is output

     CHECK CAN COMMUNICATION SYSTEM for LHD:Click here

     CHECK CAN COMMUNICATION SYSTEM for RHD:Click here

2. Click here

   PERFORM ACTIVE TEST USING GTS (ABS WARNING LIGHT)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Chassis / ABS/VSC/TRC / Active Test.

   5. According to the display on the GTS, perform the Active Test.

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

         Tester Display	Measurement Item	Control Range	Diagnostic Note
         ABS Warning Light	ABS warning light	Warning light OFF/ON	Observe combination meter Vehicle condition: Vehicle stopped

      2. 
         
         10. 
             

   6. When performing the ABS Warning Light Active Test, check ABS Warning Light in the Data List.

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

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

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

         Active Test Display
         ABS Warning Light

         Data List Display
         ABS Warning Light

      2. 
         
         1. 
            
      3. 
         
         11. 
             
         12. 
             

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

   
   
   • A

     REPLACE BRAKE ACTUATOR ASSEMBLYClick here

   • BClick here
3. Click here

   INSPECT COMBINATION METER ASSEMBLY

   
   

   1. Turn the ignition switch off.

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

      
      
      1. Body Electrical > Combination Meter > Active Test

         Tester Display
         Indicat. Lamp ABS

      2. 
         
         1. 
            
      3. 
         
         11. 
             

   3. Check the combination meter assembly.

      OK
      The ABS warning light turns on or off in accordance with the GTS.

      Result
      Proceed to OK NG

   
   
   • OK

     REPLACE BRAKE ACTUATOR ASSEMBLYClick here

   • NG

     INSPECT METER / GAUGE SYSTEMClick here