How To Proceed With Troubleshooting

WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Inspect the window defogger system after confirming that the back door power window system of the power window control system is operating normally.
* 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 COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Check if the CAN communication system is functioning normally CAN Communication System.

Result





B -- Go to CAN COMMUNICATION SYSTEM Diagnosis System
A -- Continue to next step.

4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Check if the LIN communication system is functioning normally.

Result





B -- Go to LIN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
A -- Continue to next step.

5. PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table Problem Symptoms Table.

Result





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

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU Window Defogger System.

(b) Data List / Active Test Scan Tool Testing and Procedures.

NEXT -- Continue to next step.

7. REPAIR OR REPLACE

NEXT -- Continue to next step.

8. CONFIRMATION TEST

NEXT -- END