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NAVIGATION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

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Click here Click here
Tip:

  • Use the following procedure to troubleshoot the navigation system.

  • *: Use the intelligent tester.


  1. Click here

    VEHICLE BROUGHT TO WORKSHOP


    • NEXT
  2. Click here

    CUSTOMER PROBLEM ANALYSIS


    • When troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

    • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

    • The following 5 items are important points in problem analysis:

      What Vehicle model, system name
      When Date, time, occurrence frequency
      Where Road conditions
      Under what conditions? Driving conditions, weather conditions
      How did it happen? Problem symptoms

    • NEXT
  3. Click here

    INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      Standard Voltage
      11 to 14 V
      Tip:

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


      • NEXT
  4. Click here

    CHECK CABIN


    1. Check that condensation is not likely to occur in the cabin, and that the temperature is not high or extremely low in the cabin.

      OK
      Condensation is not likely being produced and the temperature is not high or extremely low.
      Tip:

      • A humid cabin and a rapid change in temperature may lead to condensation. Condensation in the cabin may cause a short circuit.

      • The navigation system may not operate normally when the temperature is -20°C (-4°F) or lower, or 65°C (149°F) or higher.


      • NG
      • SET CABIN TO APPROPRIATE TEMPERATURE
      • OK
  5. Click here

    CHECK NAVIGATION SYSTEM NORMAL CONDITION


    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
  6. Click here

    CHECK CAN COMMUNICATION SYSTEM*


    1. Check for DTC output (Click here).

      Result
      Result Proceed to
      CAN DTCs are not output. A
      CAN DTCs are output. B

      • B
      • GO TO CAN COMMUNICATION SYSTEM (See pageClick here)
      • A
  7. Click here

    CHECK FOR DTC*


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

      Result
      Result Proceed to
      DTCs are output. A
      DTCs are not output. B
      Tip:

      If the system cannot enter diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the malfunctioning part (w/o Front Center Speaker) (Click here).


      • B
      • Go to step 11
      • A
  8. Click here

    DTC CLEAR*


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

      Tip:

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


      • NEXT
  9. Click here

    RECHECK FOR DTC*


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

      Result
      Result Proceed to
      DTCs are output. A
      DTCs are not output. B
      Tip:

      • Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores history DTCs.

      • If more information is needed, perform a recheck using the "System Check Mode" screen after rechecking for DTCs using the intelligent tester.

      • Check the DTCs and inspect the area that the code indicates.


      • B
      • Go to step 11
      • A
  10. Click here

    DIAGNOSTIC TROUBLE CODE CHART


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


      • NEXT
      • Go to step 14
  11. Click here

    CHECK HARD DISK DRIVE


    1. Enter the "HDD Check" screen. Refer to Check Hard Disk Drive in Operation Check (Click here).

      OK
      "OK" is displayed.
      Note:

      Download necessary data after replacing the hard disk drive (Click here) (w/ G-BOOK System).


      • NG
      • REPLACE HARD DISK DRIVE (See pageClick here)
      • OK
  12. Click here

    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
      Tip:

      If the symptom does not recur and no DTCs are output, attempt to reproduce the symptoms (Click here).


      • B
      • Go to step 14
      • A
  13. Click here

    PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM


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


      • NEXT
  14. Click here

    CHECK CIRCUIT


    1. Adjust, repair or replace as necessary.


      • NEXT
  15. Click here

    RECHECK FOR DTC*


    1. After clearing DTCs, recheck for DTCs (Click here).


      • NEXT
  16. Click here

    PERFORM CONFIRMATION TEST


    • NEXT
    • END