Theft Deterrent System (W/ Intrusion Sensor) How To Proceed With Troubleshooting

Securities. Lexus Is250, Is220D. Gse20 Ale20
Theft Deterrent. Lexus Is250, Is220D. Gse20 Ale20

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

  4. DTC CHECK

  5. SYMPTOM SIMULATION

  6. PROBLEM SYMPTOMS TABLE

  7. PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM

  8. ADJUST, REPAIR OR REPLACE

  9. CONFIRMATION TEST

Theft Deterrent System (W/ Intrusion Sensor) -- How To Proceed With Troubleshooting


HINT:
  1. Use this procedure to troubleshoot the theft deterrent system.
  2. The intelligent tester should be used in step 3.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS

    1. Interview the customer to confirm the trouble (Click here)


    NEXT


    3.INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

    1. Use the intelligent tester to check for normal function of the multiplex communication system.

      1. (ECU unconnected, communication line malfunctioning) Without code output, proceed to A.

      2. (ECU unconnected, communication line malfunctioning) With code output, proceed to B.



    		B.
    Go To MULTIPLEX COMMUNICATION SECTION
    A


    4.DTC CHECK

    1. Check for DTC and note any codes that are output.

    2. Delete the DTC.

    3. Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.

      1. If the DTC does not reoccur, proceed to A.

      2. If the DTC reoccurs, proceed to B.



    		B.
    Go To DTC CHART
    A


    5.SYMPTOM SIMULATION

      NEXT


      6.PROBLEM SYMPTOMS TABLE

      1. If the fault is not listed on the problem symptoms table, proceed to A.

      2. If the fault is listed on the problem symptoms table, proceed to B.



      		B.
      Go to step 7
      A


      7.PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM

      1. Terminals of ECU (Click here)

      2. On-vehicle inspection (Click here)



      8.ADJUST, REPAIR OR REPLACE

        NEXT


        9.CONFIRMATION TEST

          NEXT

          END