How To Proceed With Troubleshooting

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

HINT
* Use the following procedure to troubleshoot the defogger 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

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 Audio and Visual System (w/o Navigation System) for Models without Navigation System, How To Proceed With Troubleshooting for Models with Navigation System (for DVD), How To Proceed With Troubleshooting for Models with Navigation System (for HDD)).

Result:





B -- GO TO AUDIO AND VISUAL SYSTEM Audio and Visual System (w/o Navigation System)

C -- GO TO NAVIGATION SYSTEM for DVD Navigation System (for DVD)

D -- GO TO NAVIGATION SYSTEM for HDD Navigation System (for HDD)
A -- Continue to next step.

5. CHECK COMMUNICATION FUNCTION OF BEAN COMMUNICATION SYSTEM*

(a) Check the BEAN communication function to ensure there are no malfunctions in the communication system How to Proceed With Troubleshooting.

Result:





B -- GO TO BEAN COMMUNICATION SYSTEM Multiplex Communication System
A -- Continue to next step.

6. PROBLEM SYMPTOMS TABLE

Result:





B -- GO TO STEP 8
A -- Continue to next step.

7. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU Pinout Values and Diagnostic Parameters

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

(c) On-vehicle Inspection Component Tests and General Diagnostics

NEXT -- Continue to next step.

8. REPAIR OR REPLACE

NEXT -- Continue to next step.

9. CONFIRMATION TEST

NEXT -- END