How To Proceed With Troubleshooting

WINDOW / GLASS: WINDSHIELD DEICER SYSTEM: 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 with the power switch off.

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. SYSTEM CHECK

(a) Check the vehicle specification.

Result:





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

5. CHECK COMMUNICATION FUNCTION OF AVC-LAN COMMUNICATION*

(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 Navigation System
A -- Continue to next step.

6. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Check the CAN communication function to ensure there are no malfunctions in the communication system.

Result:





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

7. PROBLEM SYMPTOMS TABLE

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

Result:





B -- Go to step 9
A -- Continue to next step.

8. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU Windshield Deicer System

(b) Data List / Active Test Diagnosis System

NEXT -- Continue to next step.

9. REPAIR OR REPLACE

NEXT -- Continue to next step.

10. CONFIRMATION TEST

NEXT -- END