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Home >> Lexus >> 2004 >> GX 470 >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Abs With EBD & BA & TRAC & VSC System - Diagnosis >> How To Proceed With Troubleshooting

How To Proceed With Troubleshooting

  1. Vehicle Brought to Workshop 
  2. (See  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
  3. CHECK DTC and Freeze Frame Date (See  PRE-CHECK   ) 
  4. Check and Clear DTCs and Freeze Frame Data (See  PRE-CHECK   ) 
  5. Problem Symptom Confirmation 

    Symptom does not occur: Go to step   5 

    Symptom occur: Go to step   6 

  6. (See  SYMPTOM SIMULATION  ) 
  7. DTC Check (See  PRE-CHECK   ) 

    DTC is not output: Go to step   7 

    DTC is output: Go to step   8 

  8. (See  PROBLEM SYMPTOMS TABLE   ) 

    Check for fluid leakage and Go to step   10 

  9. (See  DIAGNOSTIC TROUBLE CODE TABLE   ) 
  10. Circuit Inspection (See  DTC C0200/31 RIGHT FRONT SPEED SENSOR CIRCUIT; DTC C0205/32 LEFT FRONT SPEED SENSOR CIRCUIT; DTC C1235/35 FOREIGN MATTER IS ATTACHED ON TIP OF RIGHT FRONT SENSOR; DTC C1236/36 FOREIGN MATTER IS ATTACHED ON TIP OF LEFT FRONT SENSOR   ) 
  11. Identification of Problem 
  12. Repair 
  13. Confirmation Test 

    End 

    HINT:

    Step  3,  6,  9,  12:

    Diagnostic steps where the hand-held tester can be used.

    Fail safe function:

    When a failure occurs in the ABS & BA & TRAC & VSC systems, the ABS warning light, the VSC warning light and the VSC OFF indicator light are lit and the ABS & BA & TRAC & VSC operations are prohibited. In addition to this, when the failure that disables the EBD operation occurs, the brake warning light is lit as well and the EBD operation is prohibited.