Audio and Visual System (for CrewMax)

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (for CrewMax): HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT: Use these procedures to troubleshoot the audio and visual system.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
- If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT -- Continue to next step.
3. BASIC INSPECTION
(a) Turn the ignition switch ON.
(b) Check whether or not the radio receiver turns on.

Result:





B -- Go to step 6
A -- Continue to next step.
4. CHECK FOR DTC
(a) Check for DTCs and note any codes that are output Audio and Visual System (for CrewMax).
HINT:
- If the system cannot enter the diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the problem part.
- Even if the malfunction symptom is not confirmed, check the DTCs. This is because the system stores past DTCs.
(b) Delete the DTCs.
(c) Recheck for DTCs by simulating the operation indicated by the DTCs.

Result:





B -- Go to step 6
A -- Continue to next step.
5. DIAGNOSTIC TROUBLE CODE CHART
(a) Find the output code in the DIAGNOSTIC TROUBLE CODE CHART Audio and Visual System (for CrewMax).
NEXT -- Go to step 8
6. PROBLEM SYMPTOMS TABLE
(a) Refer to the PROBLEM SYMPTOMS TABLE Problem Symptoms Table.

Result:





B -- Go to step 8
A -- Continue to next step.
7. OVERALL ANALYSIS AND TROUBLESHOOTING
(a) Terminals of ECU Audio and Visual System (for CrewMax).
NEXT -- Continue to next step.
8. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.
9. CONFIRMATION TEST
NEXT -- END