Engine Immobiliser System (W/ Smart Key System) How To Proceed With Troubleshooting

Vehicle Interior. Corolla. Zre142 Aze141
Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. INSPECT BATTERY VOLTAGE

  4. CRANK ENGINE FOR MORE THAN 10 SECONDS

  5. CHECK FOR DTC*

  6. PROBLEM SYMPTOMS TABLE

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*

  8. REPAIR OR REPLACE

  9. CONFIRMATION TEST

Engine Immobiliser System (W/ Smart Key System) -- How To Proceed With Troubleshooting


HINT:
  1. Use the following procedures to troubleshoot the engine immobiliser system.
  1. *: Using the Techstream.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS
      HINT:
      1. In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
      2. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
      1. The following 5 items are important points in the problem analysis:

        What
        		Vehicle model, system name
        When
        		Date, time, occurrence frequency
        Where
        		Road conditions
        Under what conditions?
        		Driving conditions, weather conditions
        How did it happen?
        		Problem symptoms

    NEXT


    3.INSPECT BATTERY VOLTAGE

    1. Measure the battery voltage.

      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.CRANK ENGINE FOR MORE THAN 10 SECONDS

      NEXT


      5.CHECK FOR DTC*

      1. Check for DTCs and note any codes that are output (COROLLA_ZRE142 RM000001GV807OX.html).

      2. Clear the DTCs.

      3. Recheck for DTCs. Based on the DTCs output above, try to duplicate the SFI system DTC, engine immobiliser system DTC, steering lock system DTC or smart key system (for start function) DTC by simulating the symptoms indicated by the DTCs.

        Result:
        Result
        		Proceed to
        SFI system DTC output recurs
        		A
        Engine immobiliser system DTC output recurs
        		B
        Steering lock system DTC output recurs
        		C
        Smart key system (for start function) DTC output recurs
        		D
        DTC output does not recur
        		E


      		A.
      Go to DIAGNOSTIC TROUBLE CODE CHART (COROLLA_ZRE142 RM000000PDF0G8X.html)

      		B.
      Go to DIAGNOSTIC TROUBLE CODE CHART (COROLLA_ZRE142 RM000000QY6060X.html)

      		C.
      Go to DIAGNOSTIC TROUBLE CODE CHART (COROLLA_ZRE142 RM000000XWM05GX.html)

      		D.
      Go to DIAGNOSTIC TROUBLE CODE CHART (COROLLA_ZRE142 RM000000XIZ0EQX.html)
      E


      6.PROBLEM SYMPTOMS TABLE

      1. Refer to Problem Symptoms Table (Link).

        Result:
        Result
        		Proceed to
        Fault is listed in problem symptoms table
        		A
        Fault is not listed in problem symptoms table
        		B


      		A.
      GO TO STEP 8
      B


      7.OVERALL ANALYSIS AND TROUBLESHOOTING*

      1. Data List / Active Test (COROLLA_ZRE142 RM000000QYE052X.html)

      2. Terminals of ECU (COROLLA_ZRE142 RM000000QY7093X.html)


      NEXT


      8.REPAIR OR REPLACE

        NEXT


        9.CONFIRMATION TEST

          NEXT

          END