How To Proceed With Troubleshooting

HINT:

Use these procedures to troubleshoot the navigation system.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

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

3. BASIC INSPECTION 
   1. Turn the ignition switch to ACC.
   2. Check whether or not the display appears on the navigation receiver assembly.

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      Display appears	A
      Display does not appear	B

   B:  Go to step  6

   A: Go to Next Step 

4. CHECK FOR DTC 
   1. Check for DTCs and note any codes that are output (See DTC CHECK/CLEAR  ).
   2. Clear for DTC.
   3. Recheck for DTCs. Based on the DTC output in the first step, try to force output of the navigation system DTC by simulating the operation 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 (See DIAGNOSIS DISPLAY DETAILED DESCRIPTION  ).
      • Check and clear past diagnostic trouble codes. Check the diagnostic trouble code and inspect the area the code indicates.

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

   B:  Go to step  7

   A: Go to Next Step 

5. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT REFERENCE
   
   

   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 

6. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Terminals of ECU (See TERMINALS OF ECU  ).
   2. Inspect the steering pad switch assembly (See REMOVAL ).
   3. Inspect the front No. 1 speaker assembly (See INSPECTION ).
   4. Inspect the front No. 2 speaker assembly (See INSPECTION ).
   5. Inspect the front No. 3 speaker assembly (See INSPECTION ).
   6. Inspect the front No. 4 speaker assembly (See INSPECTION ).
   7. Inspect the rear No. 1 speaker assembly (See INSPECTION ).
   8. Inspect the rear No. 2 speaker assembly (See INSPECTION ).
   9. Inspect the quarter side speaker assembly (See INSPECTION ).
   10. Inspect the w/ box No. 1 speaker assembly (See INSPECTION ).
7. ADJUST, REPAIR OR REPLACE 

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