Window Defogger System

WINDSHIELD / WINDOWGLASS: WINDOW DEFOGGER SYSTEM:

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:
- Use these procedures to troubleshoot the window defogger system.
- *: Use the Techstream.

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. CHECK LIN COMMUNICATION SYSTEM
(a) Check if the LIN communication system is functioning normally (Initial Inspection and Diagnostic Overview).

Result





B -- Go to LIN COMMUNICATION SYSTEM
A -- Continue to next step.
4. PROBLEM SYMPTOMS TABLE
(a) Refer to the problem symptoms table (Problem Symptoms Table).

Result





B -- Go to step 6
A -- Continue to next step.
5. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) Terminals of ECU (Window Defogger System)

(b) Data List / Active Test (Window Defogger System)

(c) Operation Check (Window Defogger System)

NEXT -- Continue to next step.
6. REPAIR OR REPLACE
NEXT -- Continue to next step.
7. CONFIRMATION TEST
NEXT -- END