Lexus IS250 · Service Manual BODY ELECTRICAL

HOW TO PROCEED WITH TROUBLESHOOTING

Troubleshooting

HINT:
  1. Use the following procedures to troubleshoot the wiper and washer system.
  2. *: Use the intelligent tester.


1.VEHICLE BROUGHT TO WORKSHOP
    NEXT

    2.PROBLEM SYMPTOM CONFIRMATION

      Result:
      Result
      		 Proceed to
      Symptom does not occur
      		 A
      Symptom occurs
      		 B


    		B.
    A

    3.SYMPTOM SIMULATION
      NEXT

      4.CHECK MULTIPLEX COMMUNICATION SYSTEM*

      1. Check for the multiplex communication system DTCs.

        Result:
        Result
        		 Proceed to
        MPX DTC is not output
        		 A
        MPX DTC is output
        		B


      		B.
      A

      5.CHECK CAN COMMUNICATION SYSTEM*

      1. Check for CAN DTCs.

        Result:
        Result
        		 Proceed to
        CAN DTC is not output
        		 A
        CAN DTC is output
        		 B


      		B.
      A

      6.PROBLEM SYMPTOMS TABLE
        NEXT

        7.CIRCUIT INSPECTION
          NEXT

          8.TERMINALS OF ECU
            NEXT

            9.IDENTIFICATION OF PROBLEM
              NEXT

              10.REPAIR OR REPLACE
                NEXT

                11.CONFIRMATION TEST
                  NEXT

                  ← SYSTEM DESCRIPTIONCUSTOMIZE PARAMETERS →