How To Proceed With Troubleshooting

VEHICLE BROUGHT TO WORKSHOP
DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION
1. Ask the customer about symptoms and confirm malfunctions.
  THE SCREEN DISPLAYS NOTHING (GO TO STEP 8, AND PROCEED TO "BLACK SCREEN ")
  
  OTHER SYMPTOMS (GO TO STEP 3 )
CONFIRM THE SYSTEM NORMAL CONDITION
APPLICABLE (THIS IS NOT A MALFUNCTION)

NOT APPLICABLE (GO TO STEP 4 )
CHECK FOR DTC
HINT:

If the system cannot enter diagnostic mode, replace the navigation receiver assembly.

A CODE IS OUTPUT (GO TO STEP 5 )

A CODE IS NOT OUTPUT (GO TO STEP 8)
CLEAR DTC
1. Clear the DTCs and finish diagnostic mode.
  HINT:
  
  The currently output DTCs may not indicate actual malfunctions depending on the vehicle condition.
RECHECK FOR DTC
HINT:
- 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 (See SYSTEM DESCRIPTION ).
- Check the diagnostic trouble code and inspect the area the code indicates.
  A CODE IS OUTPUT (GO TO STEP 7 )
  
  A CODE IS NOT OUTPUT (GO TO STEP 8)
DIAGNOSTIC TROUBLE CODE CHART
1. Find the output code in Diagnostic Trouble Code Chart (See DIAGNOSTIC TROUBLE CODE CHART ).
  NEXT: GO TO STEP 10
PROBLEM SYMPTOMS TABLE
1. Find the applicable symptom in Problem Symptoms Table (See PROBLEM SYMPTOMS TABLE ).
  HINT:
  
  If the symptom does not recur and no code is output, perform the symptom reproduction method (See HOW TO PROCEED WITH TROUBLESHOOTING ).
  
  THERE IS AN APPLICABLE SYMPTOM IN THE TABLE (GO TO STEP 10)
  
  THERE IS NO APPLICABLE SYMPTOM IN THE TABLE (GO TO STEP 9 )
CHECK THE ECU TERMINAL ARRANGEMENT BASED ON THE MALFUNCTION SYMPTOM
CHECK THE CIRCUIT
1. Adjust, repair, or replace as necessary.
RECHECK FOR DTC
HINT:

After clearing the DTCs, recheck for DTCs.
PERFORM CONFIRMATION TEST