Problem Symptoms Table
PROBLEM SYMPTOMS
| Symptom | Suspected Area | See | ||
|---|---|---|---|---|
| All front seat heaters do not warm up |
|
INSPECTION INSPECTION INSPECTION INSPECTION |
||
| Front LH seat cushion heater does not warm up |
|
INSPECTION INSPECTION INSPECTION INSPECTION (1) |
||
| Front LH seatback heater does not warm up |
|
INSPECTION INSPECTION INSPECTION INSPECTION (1) (1) |
||
| Front RH seat cushion heater does not warm up |
|
INSPECTION INSPECTION INSPECTION (1) |
||
| Front RH seatback heater does not warm up |
|
INSPECTION INSPECTION INSPECTION (1) (1) |
||
| All rear seat heaters do not warm up |
|
INSPECTION INSPECTION INSPECTION INSPECTION |
||
| Rear LH seat cushion heater does not warm up |
|
INSPECTION INSPECTION (1) |
||
| Rear LH seatback heater does not warm up |
|
INSPECTION INSPECTION (1) (1) |
||
| Rear RH seat cushion heater does not warm up |
|
INSPECTION INSPECTION (1) |
||
| Rear RH seatback heater does not warm up |
|
INSPECTION INSPECTION (1) (1) |
||
| Temperature of front seat heater cannot be adjusted (seat does not warm up) |
|
INSPECTION INSPECTION |
||
| Temperature of rear seat heater cannot be adjusted (seat does not warm up) |
|
INSPECTION INSPECTION |
||
|
NOTE:
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HINT:
The seat heater system is part of the large-scale multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (see the multiplex communication system).