NAVIGATION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   

   NEXT

2. 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 for 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

   Result
   Proceed to NEXT

   
   

   NEXT

3. INSPECT AUXILIARY BATTERY VOLTAGE

   
   

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

      Standard Voltage
      11 to 14 V

      Tech Tips

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

      Result
      Proceed to NEXT

   
   

   NEXT

4. 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.

      Tech Tips

      
      

      • 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.

      Result
      Proceed to OK NG

   
   

   NG

   SET CABIN TO APPROPRIATE TEMPERATURE

   OK

5. 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. CHECK CAN COMMUNICATION SYSTEM*

   
   

   1. Check if CAN communication system DTCs are output.

      Click here

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

   
   

   B

   GO TO CAN COMMUNICATION SYSTEM Click here

   A

7. CHECK FOR DTC*

   
   

   1. Refer to DTC Check / Clear.

      Click here

      Note

      Once DTC B1324, DTC B1323 and DTC B1321 are cleared, they will not be stored even if there is a malfunction.

      If DTC B1324, DTC B1323 or DTC B1321 is output, proceed to the troubleshooting procedure for DTC B1324, DTC B1323 and DTC B1321 before clearing DTCs.

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

   
   

   B

   GO TO STEP 11 Click here

   A

8. DTC CLEAR*

   
   

   1. Refer to DTC Check / Clear.

      Click here

      Tech Tips

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

      Result
      Proceed to NEXT

   
   

   NEXT

9. RECHECK FOR DTC*

   
   

   1. Refer to DTC Check / Clear.

      Click here

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

      Tech Tips

      
      

      • Even if the problem 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 GTS.

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

   
   

   B

   CHECK SD CARD Click here

   A

10. DIAGNOSTIC TROUBLE CODE CHART

    
    

    1. Find the output code in Diagnostic Trouble Code Chart.

       Click here

       Result
       Proceed to NEXT

    
    

    NEXT

    GO TO STEP 14 Click here

11. CHECK SD CARD

    
    

    1. Enter the "SD Check" screen. Refer to Check SD Card in Operation Check.

       Click here

       Result
       Result Proceed to "OK" is displayed. A "NG" is displayed. B

    
    

    B

    REPLACE SD CARD

    A

12. 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 14 Click here

    A

13. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

    
    

    1. Refer to Terminals of ECU.

       Click here

       Result
       Proceed to NEXT

    
    

    NEXT

14. CHECK CIRCUIT

    
    

    1. Adjust, repair or replace as necessary.

       Result
       Proceed to NEXT

    
    

    NEXT

15. RECHECK FOR DTC

    
    

    1. After clearing DTCs, recheck for DTCs.

       Click here

       
       Body Electrical > Navigation System > Clear DTCs
       Body Electrical > Navigation System > Trouble Codes

       Result
       Proceed to NEXT

    
    

    NEXT

16. PERFORM CONFIRMATION TEST

    Result
    Proceed to NEXT

    
    

    NEXT

    END