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G-BOOK SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

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Tip:

  • Use the following procedure to troubleshoot the G-BOOK system.

  • *: Use the intelligent tester.


  1. Click here

    VEHICLE BROUGHT TO WORKSHOP


    • NEXT
  2. Click here

    CHECK PROBLEM SYMPTOM


    1. The G-BOOK system provides a variety of functions. Therefore, it is important to identify whether a malfunction is related to the communication system, including radio wave conditions, or any other systems. Carefully confirm the conditions that caused the malfunction in order to determine if a temporary problem with the radio waves caused the malfunction.

      Displayed Message and Problem Symptom Cause
      "The lines are busy and it is not possible to display the desired content. Please try again (operate it again) after waiting for a while." is temporarily displayed. This is caused when there is a problem with the radio wave signal conditions or when the base station is busy. This is not a malfunction (convince the customer that this is not a malfunction and ask them to use the system as is).
      "The lines are busy and information was not able to be acquired." is temporarily displayed. This is caused when there is a problem with the radio wave signal conditions or when the base station is busy. This is not a malfunction (convince the customer that this is not a malfunction and ask them to use the system as is).
      After "Wait for a while." is displayed, the condition that it takes a long time to display the screen occurs temporarily. This is caused when there is a problem with the radio wave signal conditions or when the base station is busy. This is not a malfunction (convince the customer that this is not a malfunction and ask them to use the system as is).

      • NEXT
  3. Click here

    INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary 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
  4. Click here

    CHECK CAN COMMUNICATION SYSTEM*


    1. Use the intelligent tester to check if the CAN communication system is functioning normally (Click here).

      Result
      Result Proceed to
      CAN communication system DTC is not output. A
      CAN communication system DTC is output. B

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

    INSPECTION USING "SYSTEM CHECK MODE" SCREEN


    1. Perform inspections indicated on the System Check Mode screen to confirm the DCM inspection result (Click here).

      Result
      Result Proceed to
      "OK" is displayed in "DCM" on the System Check Mode screen. A
      "CHEK" is displayed in "DCM" on the System Check Mode screen.
      "EXEH" is displayed in "DCM" on the System Check Mode screen.
      "NCON" is displayed in "DCM" on the System Check Mode screen. B
      "NRES" is displayed in "DCM" on the System Check Mode screen. C

      • B
      • GO TO INSPECTION PROCEDURE FOR "NCON" is Displayed in "DCM" on the System Check Mode Screen (See pageClick here)
      • C
      • GO TO INSPECTION PROCEDURE OF "NRES" is Displayed in "DCM" on the System Check Mode Screen (See pageClick here)
      • A
  6. Click here

    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. Click here

    DTC CLEAR*


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

      Tip:

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


      • NEXT
  8. Click here

    RECHECK FOR DTC*


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

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

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

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


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

    DIAGNOSTIC TROUBLE CODE CHART


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

      Note:

      • The navigation system (for HDD) outputs DTCs for the following systems.

      • When DTCs other than those in Diagnostic Trouble Code Chart for the G-BOOK system are output, refer to Diagnostic Trouble Code Chart for the system.

      • Audio and visual system (w/ Navigation System) (Click here)

      • Navigation system (for HDD) (Click here)

      Result
      Result Proceed to
      DTCs for the G-BOOK system. A
      DTCs for the audio and visual system (w/ Navigation System) are output. B
      DTCs for the navigation system (for HDD) are output. C

      • A
      • Go to step 12
      • B
      • GO TO AUDIO AND VISUAL SYSTEM (w/ Navigation System)
      • C
      • GO TO NAVIGATION SYSTEM (for HDD)
  10. 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 DTC is output, perform the symptom reproduction method (Click here).


      • B
      • Go to step 12
      • A
  11. Click here

    PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM


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


      • NEXT
  12. Click here

    CHECK CIRCUIT


    1. Adjust, repair or replace as necessary.

      Note:

      If the navigation computer sub-assembly or the telematics transceiver is replaced, perform the vehicle contract setting (Click here).


      • NEXT
  13. Click here

    RECHECK FOR DTC

    Tip:

    After clearing DTCs, recheck for DTCs.


    • NEXT
  14. Click here

    PERFORM CONFIRMATION TEST


    • NEXT
    • END