How to Proceed With Troubleshooting (from 12/2010)

NAVIGATION: NAVIGATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use the following procedure to troubleshoot the navigation system.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT BATTERY VOLTAGE

(a) 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.

NEXT -- Continue to next step.

3. DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION

(a) Ask the customer about symptoms and confirm malfunctions.

Result:





B -- GO TO STEP 10, AND PROCEED TO "BLACK SCREEN"
A -- Continue to next step.

4. OPERATION CHECK

(a) Refer to Check System Normal Condition Operation Check (from 12/2010).

Result:





B -- SYMPTOM IS NORMAL OPERATION
A -- Continue to next step.

5. CHECK CAN COMMUNICATION SYSTEM*

(a) Check for DTC output Initial Inspection and Diagnostic Overview.

Result:





B -- GO TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.

6. CHECK FOR DTC*

(a) Refer to DTC Check/Clear DTC Check / Clear (from 12/2010).

Result:





HINT
If the system cannot enter the diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the problem part AVC-LAN Circuit (from 12/2010).

B -- GO TO STEP 10
A -- Continue to next step.

7. DTC CLEAR*

(a) Clear the DTCs and finish the diagnostic mode.

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

NEXT -- Continue to next step.

8. RECHECK FOR DTC*

Result:





HINT
* If the system cannot enter the diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits.
* Even if the malfunction symptom is not confirmed, check for diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.
* Refer to the detailed description on the diagnostic screen as necessary Description and Operation.
* Check the diagnostic trouble code and inspect the area that the code indicates.

B -- GO TO STEP 10
A -- Continue to next step.

9. DIAGNOSTIC TROUBLE CODE CHART

(a) Find the output code in Diagnostic Trouble Code Chart Diagnostic Trouble Code Chart (from 12/2010).

NEXT -- GO TO STEP 12

10. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table Problem Symptoms Table (from 12/2010).

Result:





HINT
If the symptom does not recur and no DTC is output, perform the symptom reproduction method How To Proceed With Troubleshooting.

B -- GO TO STEP 12
A -- Continue to next step.

11. PERFORM TROUBLESHOOTING BASED ON THE MALFUNCTION SYMPTOM

(a) Refer to Terminals of ECU Terminals of ECU (from 12/2010).

NEXT -- Continue to next step.

12. CHECK THE CIRCUIT

(a) Adjust, repair or replace as necessary.

NEXT -- Continue to next step.

13. RECHECK FOR DIAGNOSTIC TROUBLE CODE

HINT
After clearing the DTCs, recheck for DTCs.

NEXT -- Continue to next step.

14. PERFORM CONFIRMATION TEST

NEXT -- END