COMBUSTION TYPE POWER HEATER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

Use these procedures to troubleshoot the combustion type power heater system.


  1. 1.VEHICLE BROUGHT TO WORKSHOP

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  2. 2.CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

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  3. 3.INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

    2. NEXT

    3. 4.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 Click here.

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

  • B

  • Go to DIAGNOSTIC TROUBLE CODE CHART Click here

  • A

  • 5.PROBLEM SYMPTOMS TABLE


    1. Refer to the Problem Symptoms Table Click here.

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

    2. B

    3. GO TO STEP 7

    4. A

  • 6.OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Terminals of ECU Click here

    2. On-vehicle inspection

    3. Inspection

    4. NEXT

  • 7.ADJUST, REPAIR OR REPLACE

    NEXT

  • 8.CONFIRMATION TEST

    NEXT

    END