Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
| Symptom | Suspected Area | Link |
|---|---|---|
| Window defogger system does not operate*1 | Refer to the "Rear Window Defogger System does not Operate" | |
| Radio setting condenser | ||
| Air conditioning amplifier assembly | ||
| Harness or connector | - | |
| Instrument panel junction block assembly (for LHD) | ||
| Instrument panel junction block assembly (for RHD) | ||
| Window defogger system does not operate (indicator on)*2 | DEF fuse | - |
| ECU-IG NO.3 fuse | - | |
| DEF relay | ||
| Radio setting condenser | ||
| Back door glass (defogger wire) | ||
| Harness or connector | - | |
| Instrument panel junction block assembly (for LHD) | ||
| Instrument panel junction block assembly (for RHD) | ||
| Window defogger system does not operate (indicator off)*2 | HTR-IG fuse | - |
| ECU-IG NO.3 fuse | - | |
| DEF relay | ||
| No. 2 heater control sub-assembly | ||
| Harness or connector | - | |
| Instrument panel junction block assembly (for LHD) | ||
| Instrument panel junction block assembly (for RHD) |
*1: for Automatic Air Conditioning System
*2: for Manual Air Conditioning System