Heating performance is poor (for additional heater system)
Precautions: General safety (00)
| Condition | Possible Cause | Action |
|---|---|---|
|
Heating performance is poor (for additional heater system)
|
Blown fuse
|
Check related fuses and check for short circuit to ground.
|
|
Faulty additional heater relays
|
Check additional heater relays.
|
|
|
Faulty max hot switch
|
Check max hot switch.
|
|
|
Faulty additional heater
|
Check additional heater.
|
|
|
Faulty ECM and its circuit
|
Check ECM.
|
|
|
Faulty wiring or grounding
|
Repair wiring.
|