STOP AND START SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

The intelligent tester can be used in steps 3, 4, 5 and 6.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    1. Confirm the problem symptoms.


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  3. CHECK FOR STOP AND START SYSTEM DTC


    1. Check for DTCs Click here.


      1. Record the DTCs.

        Tech Tips

        If any DTCs for the CAN communication system are output, troubleshoot those DTCs first.

        However, if DTC P323B for the Stop and Start system is output, troubleshoot it before troubleshooting the CAN communication system.

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

      B

      GO TO STEP 5
      A

  4. DIAGNOSTIC TROUBLE CODE CHART


    NEXT
    GO TO STEP 7

  5. PROBLEM SYMPTOMS TABLE


    1. Problem Symptoms Table Click here.


      NEXT

  6. OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Data List/Active Test Click here.

    2. Terminals of ECU Click here.


      NEXT

  7. CIRCUIT INSPECTION


    NEXT

  8. ADJUST AND/OR REPAIR


    NEXT

  9. CLEAR DTC


    1. Clear the DTC Click here.


      NEXT

  10. CONFIRMATION TEST


    1. Perform a confirmation test.


      1. Warm up the engine.

      2. Turn the air conditioning system off.

      3. Drive the vehicle for 15 minutes to 40 minutes until the ECO OFF indicator goes off.

      4. Stop the vehicle, shift to neutral and release the clutch. Check if the ECO OFF indicator light goes off.

      5. Check if the engine restarts.

        Tech Tips

        If the engine does not stop due to Step and Start system control, air fuel ratio learning and idle speed learning are necessary. Allow the engine to idle for 3 minutes and check that the engine speed is within 50 rpm of the target idle speed.


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