LEXUS PARKING ASSIST-SENSOR SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use the following procedure to troubleshoot the Lexus parking assist-sensor system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    NEXT

  3. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage with the power switch off.

      Standard Voltage
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.


      NEXT

  4. CHECK CAN COMMUNICATION SYSTEM*


    1. Use the intelligent tester to check if the CAN communication system is functioning normally.

      Result
      Result Proceed to
      CAN communication system DTC is not output A
      CAN communication system DTC is output B

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  5. PROBLEM SYMPTOM CONFIRMATION


    NEXT

  6. CHECK DTC*


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is output A
      DTC is not output (Problem symptom does not occur) B
      DTC is not output (Problem symptom occurs) C

      B

      GO TO STEP 8
      C

      GO TO STEP 9
      A

  7. DIAGNOSTIC TROUBLE CODE CHART


    1. Refer to Diagnostic Trouble Code Chart Click here.


      NEXT
      GO TO STEP 11

  8. SYMPTOM SIMULATION


    1. Refer to Symptom Simulation Click here.


      NEXT

  9. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table Click here.

      Result
      Result Proceed to
      Fault is not listed in Problem Symptoms Table A
      Fault is listed in Problem Symptoms Table B

      B

      GO TO STEP 11
      A

  10. OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Operation Check Click here

    2. Terminals of ECU Click here

    3. Data List / Active Test Click here


      NEXT

  11. CIRCUIT INSPECTION*


    NEXT

  12. IDENTIFICATION OF PROBLEM


    NEXT

  13. REPAIR OR REPLACE


    NEXT

  14. CONFIRMATION TEST*


    NEXT
    END