Engine Immobiliser System (For Sedan) How To Proceed With Troubleshooting

Vehicle Interior. Yaris. Ncp93, 131
Theft Deterrent Keyless Entry. Yaris. Ncp93, 131

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK

  3. CRANK ENGINE FOR MORE THAN 10 SECONDS

  4. CHECK FOR DTCS

  5. READ VALUE USING TECHSTREAM

  6. PROBLEM SYMPTOMS TABLE

  7. OVERALL ANALYSIS AND TROUBLESHOOTING

  8. ADJUST, REPAIR OR REPLACE

  9. CONFIRMATION TEST

Engine Immobiliser System (For Sedan) -- How To Proceed With Troubleshooting


HINT:
Use this procedure to troubleshoot the engine immobiliser system.
The Techstream should be used in steps 4, 5 and 7.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK

      NEXT


      3.CRANK ENGINE FOR MORE THAN 10 SECONDS

        NEXT


        4.CHECK FOR DTCS

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

        2. Delete the DTC.

        3. Recheck for DTCs. Based on the DTC output in (a), try to force output of the same SFI system DTC or engine immobiliser system DTC by simulating the original activity indicated by the DTC.

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

          2. If the SFI system DTC reoccurs, proceed to B.

          3. If the engine immobiliser system DTC reoccurs, proceed to C.



        		B.
        Go to SFI SYSTEM

        		C.
        Go to step 8
        A


        5.READ VALUE USING TECHSTREAM

        1. Connect a Techstream to the DLC3.

        2. Turn the ignition switch to ON.

        3. Turn the tester on.

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

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


          6. Transponder key ECU assembly
          Tester Display
          		Measurement Item/Range
          		Normal Condition
          		Diagnostic Note
          Key SW
          		Unlock warning switch signal/
          ON or OFF
          		OFF: No key is in ignition key cylinder
          ON: Key is in ignition key cylinder
          		-
          OK:
          "ON" (key is in ignition key cylinder) appears on the screen.


        		NG.
        Go to DTC B2780
        OK


        6.PROBLEM SYMPTOMS TABLE

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

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



        		B.
        Go to step 8
        A


        7.OVERALL ANALYSIS AND TROUBLESHOOTING

        1. DATA LIST/ACTIVE TEST (YARIS_NCP93 RM00000170300JX.html)

          1. Inspection with the Techstream (DATA LIST)

          2. Inspection with the Techstream (ACTIVE TEST)

        2. Terminals of ECU (YARIS_NCP93 RM0000012F200PX.html)


        NEXT


        8.ADJUST, REPAIR OR REPLACE

          NEXT


          9.CONFIRMATION TEST

            NEXT

            END