How to Proceed With Troubleshooting

NAVIGATION: NAVIGATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

1. VEHICLE BROUGHT INTO A WORKSHOP

NEXT -- Continue to next step.

2. DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION

(a) Ask the customer about symptoms and confirm malfunctions.

-- THE SCREEN DISPLAYS NOTHING (GO TO STEP 7, AND PROCEED TO "No Image Appears on Multi-display")

-- OTHER SYMPTOMS (GO TO STEP 3)

3. CHECK MULTIPLEX COMMUNICATION SYSTEM (BEAN)

(a) Using Techstream to check for normal function of the body multiplex communication system.

-- A CODE IS OUTPUT (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM")

-- A CODE IS NOT OUTPUT (GO TO STEP 4)

4. CONFIRM THE SYSTEM NORMAL CONDITION

-- APPLICABLE (THIS IS NOT A MALFUNCTION)

-- NOT APPLICABLE (GO TO STEP 5)

5. CHECK THE DIAGNOSTIC TROUBLE CODES

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 diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.
* Check and clear past diagnostic trouble codes. Check the diagnostic trouble code and inspect the area the code indicates.
-- A CODE IS OUTPUT (GO TO STEP 6)

-- A CODE IS NOT OUTPUT (GO TO STEP 7)

6. DIAGNOSTIC TROUBLE CODE CHART

(a) Find the output code on the diagnostic trouble code chart Audio and Visual System.

NEXT -- GO TO STEP 9

7. PROBLEM SYMPTOMS TABLE

(a) Find the applicable symptom code in the problem symptoms table Problem Symptoms Table.

HINT
If the symptom does not recur and no code is output, perform the symptom reproduction method Electronic Circuit Inspection Procedure.

-- THERE IS AN APPLICABLE SYMPTOM CODE IN THE TABLE (GO TO STEP 9)

-- THERE IS NO APPLICABLE SYMPTOM CODE IN THE TABLE (GO TO STEP 8)

8. CHECK THE ECU TERMINAL ARRANGEMENT BASED ON THE MALFUNCTION SYMPTOM

NEXT -- Continue to next step.

9. CHECK THE CIRCUIT

(a) Adjust, repair or replace as necessary.

NEXT -- Continue to next step.

10. RECHECK THE DIAGNOSTIC TROUBLE CODE

HINT
After deleting the DTC, recheck for diagnostic trouble codes.

NEXT -- Continue to next step.

11. PERFORM CONFIRMATION TEST

NEXT -- END