Windshield Deicer System

WINDSHIELD / WINDOWGLASS: WINDSHIELD DEICER SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use the following procedure to troubleshoot the windshield deicer system.
- *: Use the Techstream.

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

2. CUSTOMER PROBLEM ANALYSIS
HINT:
- In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
- The following 5 items are important points in the problem analysis:





NEXT -- Continue to next step.

3. INSPECT BATTERY VOLTAGE
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
NEXT -- Continue to next step.

4. CHECK COMMUNICATION FUNCTION OF AVC-LAN COMMUNICATION SYSTEM
(a) Check the AVC-LAN communication function to ensure there are no malfunctions in the communication system Reading and Clearing Diagnostic Trouble Codes.
Result:






B -- GO TO NAVIGATION SYSTEM
A -- Continue to next step.

5. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM*
(a) Using the Techstream, check the multiplex communication function to ensure there are no malfunctions in the communication system Reading and Clearing Diagnostic Trouble Codes.
Result:






B -- GO TO MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.

6. PROBLEM SYMPTOMS TABLE
(a) Refer to 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 Windshield Deicer System
(b) Data List / Active Test Windshield Deicer System
NEXT -- Continue to next step.

8. REPAIR OR REPLACE
NEXT -- Continue to next step.

9. CONFIRMATION TEST
NEXT -- END