Defogger System
This system uses the multiplex communication system, so check diagnosis system of the multiplex communication system before you proceed with troubleshooting. Refer to MULTIPLEX COMMUNICATION SYSTEM .
DEFOGGER SYSTEM PROBLEM SYMPTOM
| Symptom | Suspect Area | Action |
|---|---|---|
| Rear window defogger does not operate. | 1. HTR Fuse | POWER SOURCE |
| 2. DEFM-Fuse | POWER SOURCE | |
| 3. Defogger Relay Circuit | REAR DEFOGGER RELAY CIRCUIT | |
| 4. Defogger Switch (in A/C Panel Switch) | DEFOGGER SWITCH CIRCUIT | |
| 5. Defogger Wire | DEFOGGER WIRE | |
| 6. Wire Harness | - | |
| 7. Body No. 1 ECU | BODY ECU NO. 1 CONTROL SYSTEM OPERATION CHECK | |
| Mirror defogger does not operate. | 1. MIR-HTR Fuse (Passenger Side J/B) | POWER SOURCE |
| 2. Mirror Heater Relay | MIRROR DEFOGGER RELAY CIRCUIT | |
| 3. Mirror Heater | MIRROR DEFOGGER | |
| 4. Wire Harness | - |