How To Proceed With Troubleshooting

HINT:

Use these procedures to troubleshoot the navigation system.

VEHICLE BROUGHT TO WORKSHOP
NEXT: Go to next step
INSPECT BATTERY VOLTAGE
Standard voltage

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT: Go to next step

BASIC INSPECTION

Turn the ignition switch to ACC.

Check whether or not the display appears on the navigation receiver assembly.

RESULT

Result	Proceed to
Display appears	A
Display does not appear	B

B → Go to step 6

CHECK FOR DTC

Check for DTCs and note any codes that are output.
Clear the DTCs.

Recheck for DTCs. Based on the DTC output in the first step, try to force output of the navigation system DTC by simulating the conditions indicated by the DTC.

HINT:

If the system cannot enter the diagnosis mode, inspect each AVC-LAN communication signal and repair or replace problem parts.
Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores past DTCs.
Refer to the detailed description on the diagnostic screen, as necessary. Refer to SYSTEM DESCRIPTION .
Check and clear past diagnostic trouble codes. Check the diagnostic trouble code and inspect the area the code indicates.

RESULT

Result	Proceed to
DTC is not output	A
DTC is output	B

B → Go to step 7

A: Go to next step

PROBLEM SYMPTOMS TABLE

RESULT

Result	Proceed to
Fault is not listed in problem symptoms table	A
Fault is listed in problem symptoms table	B

B → Go to step 7

A: Go to next step

OVERALL ANALYSIS AND TROUBLESHOOTING
1. Terminals of ECU. Refer to TERMINALS OF ECU
2. Inspect the front No. 1 speaker. Refer to INSPECTION
3. Inspect the front No. 2 speaker. Refer to INSPECTION
4. Inspect the rear No. 1 speaker. Refer to INSPECTION
5. Inspect the steering pad switch. Refer to INSPECTION
  NEXT: Go to next step
ADJUST, REPAIR OR REPLACE
NEXT → END