Initial Inspection and Diagnostic Overview

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

NAVIGATION / MULTI INFO DISPLAY: 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 9, AND PROCEED TO "No Image Appears on Multi-display")
-- OTHER SYMPTOMS (GO TO STEP 3)
3. CHECK MULTIPLEX COMMUNICATION SYSTEM (BEAN)
(a) Use the Techstream to check for normal function of the body multiplex communication system How to Proceed With Troubleshooting.
-- 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 DTC
HINT: If the system cannot enter the diagnostic mode, inspect each AVC-LAN communication component and repair or replace problem parts.

-- A CODE IS OUTPUT (GO TO STEP 6)
-- A CODE IS NOT OUTPUT (GO TO STEP 9)
6. DTC CLEAR
(a) Clear the DTCs and finish the diagnostic mode.
HINT: The currently output DTCs may not indicate actual malfunctions depending on the vehicle conditions.

NEXT -- Continue to next step.
7. RECHECK DTC
HINT:
- If the system cannot enter the diagnosis 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 system description on the diagnostic screen, as necessary Description and Operation.
- Check the diagnostic trouble code and inspect the area the code indicates.

-- A CODE IS OUTPUT (GO TO STEP 8)
-- A CODE IS NOT OUTPUT (GO TO STEP 9)
8. DIAGNOSTIC TROUBLE CODE CHART
(a) Find the output code on the diagnostic trouble code chart.
NEXT -- GO TO STEP 11
9. PROBLEM SYMPTOMS TABLE
(a) Find the applicable symptom 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 How To Proceed With Troubleshooting.

-- THERE IS AN APPLICABLE SYMPTOM IN THE TABLE (GO TO STEP 11)
-- THERE IS NO APPLICABLE SYMPTOM IN THE TABLE (GO TO STEP 10)
10. CHECK THE ECU TERMINAL ARRANGEMENT BASED ON THE MALFUNCTION SYMPTOM
NEXT -- Continue to next step.
11. CHECK THE CIRCUIT
(a) Adjust, repair, or replace as necessary.
NEXT -- Continue to next step.
12. RECHECK THE DIAGNOSTIC TROUBLE CODE
HINT: After clearing the DTCs, recheck for diagnostic trouble codes.

NEXT -- Continue to next step.
13. PERFORM CONFIRMATION TEST
NEXT -- END