How To Proceed With Troubleshooting

WINDSHIELD / WINDOW GLASS: 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 Initial Inspection and Diagnostic Overview
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 Operation Check

NEXT -- Continue to next step.

6. REPAIR OR REPLACE

NEXT -- Continue to next step.

7. CONFIRMATION TEST

NEXT -- END