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NAVIGATION SYSTEM (for HDD) > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
  1. Use the following procedure to troubleshoot the navigation system.
  2. *: Use the intelligent tester.



1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.INSPECT BATTERY VOLTAGE

    1. Measure the battery voltage with the power switch off.

      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


    3.DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION

    1. Ask the customer about symptoms and confirm malfunctions.

      Result:
      Result
      		Proceed to
      Other symptoms.
      		A
      The screen displays nothing.
      		B



    		B.
    Go to step 6
    A


    4.OPERATION CHECK

    1. Refer to Check System Normal Condition (Click here).

      Result:
      Result
      		Proceed to
      Symptom is not normal operation.
      		A
      Symptom is normal operation.
      		B



    		B.
    SYMPTOM IS NORMAL OPERATION
    A


    5.CHECK CAN COMMUNICATION SYSTEM*

    1. Check for DTC output (Click here).

      Result:
      Result
      		Proceed to
      CAN DTC is not output.
      		A
      CAN DTC is output.
      		B



    		B.
    GO TO CAN COMMUNICATION SYSTEM (Click here)
    A


    6.CHECK FOR DTC*

    1. Refer to DTC Check/Clear (Click here).

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



    		B.
    Go to step 10
    A


    7.DTC CLEAR*

    1. Refer to DTC Check/Clear (Click here).

      HINT:
      The present DTCs may not indicate actual malfunctions depending on the vehicle operating conditions.


    NEXT


    8.RECHECK FOR DTC*

    1. Refer to DTC Check/Clear (Click here).

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

      HINT:
      1. Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores history DTCs.
      2. Check the DTCs and inspect the area code indicates.



    		B.
    Go to step 10
    A


    9.DIAGNOSTIC TROUBLE CODE CHART

    1. Find the output code in Diagnostic Trouble Code Chart (Click here).



    		NEXT.
    Go to step 12

    10.PROBLEM SYMPTOMS TABLE

    1. Refer to 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

      HINT:
      If the symptom does not recur and no DTC is output, perform the symptom reproduction method (Click here).



    		B.
    Go to step 12
    A


    11.CHECK ECU TERMINAL ARRANGEMENT BASED ON MALFUNCTION SYMPTOM

    1. Refer to Terminals of ECU (Click here).


    NEXT


    12.CHECK CIRCUIT

    1. Adjust, repair or replace as necessary.


    NEXT


    13.RECHECK FOR DIAGNOSTIC TROUBLE CODE

      HINT:
      After clearing the DTCs, recheck for DTCs.


    NEXT


    14.PERFORM CONFIRMATION TEST

      NEXT

      END