How to Proceed With Troubleshooting

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

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 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 Problem Symptoms Table.
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 THE ECU TERMINAL ARRANGEMENT 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