HEATED SEAT SYSTEM DIAGNOSIS
CONDITION
POSSIBLE CAUSES
CORRECTION
NO HEATED SEAT SWITCH
ILLUMINATION WITH
IGNITION ON
1. Faulty fuse.
1. Check heated seat fuse in Junction Block (JB).
Replace fuse, if required.
2. Wiring faulty.
2. Check fused ignition switch output (run-acc)
circuit from heated seat switch connector to
ignition switch. Repair, if required.
3. Ground faulty.
3. Check for ground at heated seat switch
connector. Repair, if required.
4. Faulty switch.
4. Refer to Heated Seat Switch for the proper
switch diagnosis and testing procedures.
SEATS HEAT, BUT NO
HEATED SEAT SWITCH
INDICATORS
1. Wiring faulty.
1. Check LED driver circuit(s) from heated seat
switch connector to heated seat module
connector. Repair, if required.
2. Faulty switch LED.
2. Replace switch with known good unit. If OK,
discard faulty switch.
3. Faulty module.
3. Refer to Heated Seat Module for the proper
module diagnosis and testing procedures.
Replace, if required.
SEATS DO NOT HEAT AND
NO HEATED SEAT SWITCH
INDICATORS
1. Faulty circuit breaker.
1. Check power seat circuit breaker in Junction
Block (JB). Replace, if required.
2. Faulty relay.
2. Refer to Heated Seat Relay for the proper
relay diagnosis and testing procedures. Replace,
if required.
3. Faulty module.
3. Refer to Heated Seat Module for the proper
module diagnosis and testing procedures.
Replace, if required.
HEATED SEAT SWITCH
INDICATORS FLASHING
1. Faulty sensor.
1. Refer to Heated Seat Sensor for the proper
heated seat system self-diagnostic routine.
Repair, as required.
2. Faulty element.
2. Refer to Heated Seat Element for the proper
heated seat system self-diagnostic routine.
Repair, as required.
SELF-DIAGNOSTICS - HEATED SEAT SYSTEM
The heated seat system is capable of performing
some self-diagnostics. The following table depicts the
various failure modes which will be reported to the
occupant via flashing of the heated seat switch Light-
Emitting Diode (LED) indicators. Flashing LED indi-
cators on the driver side switch indicate that a fault
exists in the driver side of the system and, likewise,
flashing LED indicators on the passenger side switch
indicate a fault exists in the passenger side of the
system. The LED indicators will flash at a rate of
approximately one-half second on, and one-half sec-
ond off for a duration of one minute. This process
will repeat each time an attempt is made to turn the
system on with the heated seat switches until the
problem has been corrected.
8G - 10
HEATED SEAT SYSTEM
PT
HEATED SEAT SYSTEM (Continued)