Seats
Body, Cab and Accessories
Front Seat Heater Symptom Diagnosis (If Equipped)
Condition
Both seat back and
cushion do not become
hot although seat heater
switch is ON position
Only seat back does not
become hot although seat
heater switch is ON
position
Only seat cushion does
not become hot although
seat heater switch is ON
position
Diagnostic Information and Procedures
Possible cause
Wiring or grounding faulty
"SEAT HTR" fuse blown
Seat heater switch faulty
Seat heater circuit in seat back and/or
seat cushion faulty
Wiring faulty
Seat heater circuit in seat back and/or
seat cushion faulty
Wiring faulty
Seat heater circuit in seat cushion faulty Replace heater front cushion.
Correction / Reference Item
Repair.
Replace fuse to check for short.
Replace switch.
Replace heater front back and/or heater front
cushion.
Repair.
Replace heater front back and/or heater front
cushion.
Repair.
Seats:
9G-1
S7RW0A9704001