How to Proceed With Troubleshooting

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
Use the following procedure to troubleshoot the navigation system.

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 8, AND PROCEED TO "BLACK SCREEN"
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 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 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. PERFORM TROUBLESHOOTING BASED ON THE 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