How to Proceed With Troubleshooting

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. DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION

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

Result:





B -- Go to step 7
A -- Continue to next step.

3. OPERATION CHECK

(a) Refer to Check System Normal Condition Operation Check.

Result:





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

4. CHECK FOR DTC*

(a) Refer to DTC Check/Clear Reading and Clearing Diagnostic Trouble Codes.

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.

B -- Go to step 8
A -- Continue to next step.

5. 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.

6. 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 history 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 code indicates.

B -- Go to step 8
A -- Continue to next step.

7. DIAGNOSTIC TROUBLE CODE CHART

(a) Find the output code in Diagnostic Trouble Code Chart Navigation System.

NEXT -- Go to step 10

8. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table Symptom Related Diagnostic Procedures.

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 10
A -- Continue to next step.

9. CHECK ECU TERMINAL ARRANGEMENT BASED ON MALFUNCTION SYMPTOM

(a) Refer to Terminals of ECU Pinout Values and Diagnostic Parameters.

NEXT -- Continue to next step.

10. CHECK THE CIRCUIT

(a) Adjust, repair or replace as necessary.

NEXT -- Continue to next step.

11. RECHECK FOR DIAGNOSTIC TROUBLE CODE*

HINT
After clearing the DTCs, recheck for DTCs.

NEXT -- Continue to next step.

12. PERFORM CONFIRMATION TEST

NEXT -- END