Initial Inspection and Diagnostic Overview

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.

2. INSPECT BATTERY VOLTAGE
Standard voltage:
10 to 14 V
- If the voltage is below 10 V, recharge or replace the battery before proceeding.

NEXT -- Continue to next step.

3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)
(a) Using Techstream, check if the Multiplex Communication System (MPX) is functioning normally.
Result:





B -- Go to MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.

4. BASIC INSPECTION
(a) Turn the ignition switch on (IG).
(b) Check whether or not the radio receiver and multi-display (accessory meter) turn on.
Result:





B -- Go to step 7
A -- Continue to next step.

5. CHECK FOR DTC
(a) Check for DTCs and note any codes that are output.
(b) Delete the DTCs.
(c) Recheck 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 the problem parts.
- Even if the malfunction symptom is not confirmed, check the DTCs. This is because the system stores past DTCs.
- Check and clear past DTCs. Then check for DTCs.
Result:





B -- Go to step 7
A -- Continue to next step.

6. DIAGNOSTIC TROUBLE CODE CHART
Find the output code on the diagnostic trouble code chart Audio and Visual System.
NEXT -- Go to step 9
7. PROBLEM SYMPTOMS TABLE
Refer to the problem symptoms table Problem Symptoms Table.
Result:





B -- Go to step 9
A -- Continue to next step.

8. OVERALL ANALYSIS AND TROUBLESHOOTING
(a) Terminals of ECU Pinout Values and Diagnostic Parameters.
NEXT -- Continue to next step.

9. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.

10. CONFIRMATION TEST
NEXT -- END