ENGINE IMMOBILISER SYSTEM (w/o Entry and Start System) > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
Use the following procedure to troubleshoot the engine immobiliser system.
*: Use the intelligent tester .



1.VEHICLE BROUGHT TO WORKSHOP

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    2.CUSTOMER PROBLEM ANALYSIS CHECK

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


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    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.


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    4.CRANK ENGINE FOR MORE THAN 10 SECONDS

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      5.CHECK FOR DTC*

      1. Check for DTCs and note any codes that are output (Click here).

      2. Clear the DTCs (Click here).

      3. Recheck for DTCs. Try to duplicate the DTCs (ECD system or SFI system and engine immobiliser system) by simulating the symptoms indicated by the DTCs.
        Result 
        Result
        		Proceed to
        DTC is not output
        		A
        DTC is (ECD system) output (for 1ND-TV)
        		B
        DTC is (SFI system) output (for 1KR-FE)
        		C
        DTC is (SFI system) output (for 1NR-FE)
        		D
        DTC is output (engine immobiliser system)
        		E



      		B.
      GO TO DTC CHART (Click here)

      		C.
      GO TO DTC CHART (Click here).

      		D.
      GO TO DTC CHART (Click here).

      		E.
      GO TO DTC CHART (Click here).
      A


      6.READ VALUE USING INTELLIGENT TESTER*

      1. Connect the intelligent tester to the DLC3.

      2. Turn the ignition switch to ON.

      3. Turn the tester on.

      4. Enter the following menus: Body / Immobiliser / Data List.

      5. According to the display on the tester, read the Data List.


        6. Immobiliser 
        Tester Display
        		Measurement Item/Range
        		Normal Condition
        		Diagnostic Note
        Key SW
        		Unlock warning switch signal/ON or OFF
        		ON: Key is in ignition key cylinder
        OFF: No key is in ignition key cylinder
        		-

        OK:
        ON (Key is in ignition key cylinder) appears on the screen.



      		NG.
      GO TO DTC B2780 (Click here).
      OK


      7.PROBLEM SYMPTOMS TABLE
        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 9
      A


      8.OVERALL ANALYSIS AND TROUBLESHOOTING*

      1. Data List/Active Test (Click here)

      2. Terminals OF ECU (Click here)


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      9.ADJUST, REPAIR OR REPLACE

        NOTICE:
        1. If the transponder key ECU is replaced, register key and ECU - ECM communication ID.
        2. When the ECM is replaced, reregister the ECU - ECM communication ID.


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      10.CONFIRMATION TEST

        NEXT

        END