ELECTRONICALLY CONTROLLED BRAKE SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   
   • NEXTClick here
2. Click here

   CUSTOMER PROBLEM ANALYSIS

   
   

   1. Interview the customer and confirm the problem.

      Click here

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
3. Click here

   CHECK DTC AND FREEZE FRAME DATA*

   
   

   1. Check and record DTCs and Freeze Frame Data.

      for DTC Check / Clear:Click here

      for Freeze Frame Data:Click here

      
      
      1. Chassis > ABS/VSC/TRC > Trouble Codes
      2. 
         
      3. 
         

   2. Clear the DTCs and Freeze Frame Data.

      for DTC Check / Clear:Click here

      for Freeze Frame Data:Click here

      
      
      1. Chassis > ABS/VSC/TRC > Clear DTCs
      2. 
         
      3. 
         

   3. Reconfirm the DTCs.

      
      

      1. Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.

         
         
         1. Chassis > ABS/VSC/TRC > Trouble Codes
         2. 
            
         3. 
            
         Tip:
         

         • When CAN communication system DTCs are output, repair the CAN communication system first.

           Click here

         • If DTCs U0123, U0124, U0126, U0151, and/or U0293 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit.

           Click here

         • If the GTS cannot communicate with the skid control ECU assembly, inspect the CAN communication system.

           Click here

         • If there is no response from the skid control ECU assembly, inspect the IG1 circuit of the skid control ECU assembly.

           Click here

      Result
      Result Proceed to DTCs are output. A DTCs are not output. (Problem symptom does not occur.) B DTCs are not output. (Problem symptom occurs.) C

   
   
   • AClick here
   • BClick here
   • CClick here

     GO TO STEP 6

4. Click here

   DIAGNOSTIC TROUBLE CODE CHART

   
   

   1. Proceed to Diagnostic Trouble Code Chart.

      Click here

      Result
      Proceed to NEXT

   
   
   • NEXTClick here

     GO TO STEP 7

5. Click here

   SYMPTOM SIMULATION

   
   

   1. Proceed to How to Proceed with Troubleshooting.

      Click here

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
6. Click here

   PROBLEM SYMPTOMS TABLE

   
   

   1. Proceed to Problem Symptoms Table.

      Click here

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
7. Click here

   CIRCUIT INSPECTION*

   Result
   Proceed to NEXT

   
   
   • NEXTClick here
8. Click here

   IDENTIFICATION OF PROBLEM

   Result
   Proceed to NEXT

   
   
   • NEXTClick here
9. Click here

   REPAIR OR REPLACEMENT

   Result
   Proceed to NEXT

   
   
   • NEXTClick here
10. Click here

    RECONFIRM DTC*

    
    

    1. Clear the DTCs.

       Click here

       
       
       1. Chassis > ABS/VSC/TRC > Clear DTCs
       2. 
          
       3. 
          

    2. Check if the same DTCs are output.

       Click here

       
       
       1. Chassis > ABS/VSC/TRC > Trouble Codes
       2. 
          
       3. 
          

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

    
    
    • AClick here
    • B

      REPAIR CIRCUITS INDICATED BY OUTPUT DTCSClick here

11. Click here

    CONFIRMATION TEST

    Result
    Proceed to NEXT

    
    
    • NEXT

      END