G-BOOK SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

VEHICLE BROUGHT TO WORKSHOP

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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 wave signal condition caused the malfunction.

   Displayed Message and Problem Symptom	Cause
   A message is displayed temporarily indicating to try again after moving the vehicle because the center cannot be accessed, as the screen cannot be displayed due to a busy line, etc.	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 (inform the customer that this is not a malfunction and ask them to use the system as is).
   A message is displayed temporarily indicating to try again after waiting for a while because the information cannot be retrieved due to a busy line, etc.	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 (inform the customer that this is not a malfunction and ask them to use the system as is).
   A message is displayed temporarily indicating to try again after waiting for a while because the lines are busy.	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 (inform the customer that this is not a malfunctions and ask them to use the system as is).

   
   

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INSPECT BATTERY VOLTAGE

1. Measure the battery voltage.

   Standard voltage
   11 to 14 V

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

   
   

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CHECK CAN COMMUNICATION SYSTEM*

1. Use the GTS 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 Click here

   A

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

   Tech Tips

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

   
   

   B

   Go to step 7

   A

PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

1. Refer to Terminals of ECU Click here.

   
   

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CHECK CIRCUIT

1. Adjust, repair or replace as necessary.

   Note

   If the navigation receiver assembly is replaced, perform the vehicle contract setting Click here.

   
   

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PERFORM CONFIRMATION TEST

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