TEST
ACTION
APPLICABILITY
2
NOTE: Raise the seat to the highest position to gain access to the connec-
tors. The HSM is located at the front of the seat and the Seat Heater
connectors are at the rear of the seat.
Turn the ignition off.
Disconnect the Heated Seat Module C2 harness connector.
Measure the total resistance of the Driver Seat Heater System from the Driver Seat
Heater B(+) Driver to the Driver Seat Heater Ground in the HSM C2 connector
Is the resistance below 50.0 ohms?
All
Yes
→
Go To
3
No
→
Go To
7
3
NOTE: Raise the seat to the highest position to gain access to the connec-
tors. The HSM is located at the front of the seat and the Seat Heater
connectors are at the rear of the seat.
Turn the ignition off.
Disconnect the Heated Seat Module C2 harness connector.
Turn the ignition on.
Measure the voltage of the Driver Seat Heater B(+) Driver circuit.
Is ANY voltage present on the Driver Seat Heater B(+) Driver circuit?
All
Yes
→
Go To
4
No
→
Replace the Heated Seat Module.
Perform VERIFICATION TEST -MEMORY SYSTEM.
4
NOTE: Raise the seat to the highest position to gain access to the connec-
tors. The HSM is located at the front of the seat and the Seat Heater
connectors are at the rear of the seat.
Turn the ignition off.
Disconnect the Heated Seat Module C2 harness connector.
Disconnect the Driver Heated Seat Cushion 4-way connector.
Turn the ignition on.
Measure the voltage of the Driver Seat Heater B(+) Driver circuit.
Is there ANY voltage on the Driver Seat Heater B(+) Driver circuit?
All
Yes
→
Repair the Driver Seat Heater B(+) Driver circuit for a short to
voltage.
Perform VERIFICATION TEST -MEMORY SYSTEM.
No
→
Go To
5
5
NOTE: Raise the seat to the highest position to gain access to the connec-
tors. The HSM is located at the front of the seat and the Seat Heater
connectors are at the rear of the seat.
Turn the ignition off.
Disconnect the HSM C2 harness connector.
Disconnect the Driver Heated Seat Back 4-way connector.
Turn the ignition on.
Measure the voltage of the Driver Seat Heater Ground circuit at the HSM C2
connector.
Is there ANY voltage on the Driver Seat Heater Ground circuit?
All
Yes
→
Go To
6
No
→
Replace the Driver Heated Seat Cushion / Bolster.
Perform VERIFICATION TEST -MEMORY SYSTEM.
199
ELECTRICALLY HEATED SYSTEMS
DRIVER SEAT HEAT OUTPUT OPEN/SHT TO BATTERY (LIMITED) —
Continued