Chrysler 300M 2002 Service Manual page 1931

ELECTRICALLY HEATED SYSTEMS
PASSENGER THERMISTOR OUT OF RANGE LOW —
TEST
3 Turn ignition off.
NOTE: Raise the seat to the highest position to gain access to the connectors. The
MHSMM is located at the front of the drivers seat and the Seat Heater connectors are
at the rear of each seat.
Disconnect the Passenger Heated Seat Cushion 4-way connector.
Disconnect the Memory Heated Seat Mirror Module C1 connector.
Measure the resistance of the Passenger Seat Temperature Sensor Input circuit to
body ground.
Is the resistance below 1000.0 ohms?
Yes → Repair the Passenger Seat Temperature Sensor Input circuit for a
→ Go To 4
No
4 Turn ignition off.
NOTE: Raise the seat to the highest position to gain access to the connectors. The
MHSMM is located at the front of the drivers seat and the Seat Heater connectors are
at the rear of each seat.
Disconnect the Passenger Heated Seat Cushion 4-way connector.
Measure the resistance between the Seat Temperature 5 Volt Supply circuit and the
Seat Temperature Sensor Input circuit in the heated seat cushion connector, cushion
side.
Is the resistance below 70000 (70K) ohms?
Yes → Go To 5
→ Replace the Passenger Seat Cushion.
No
5 Turn ignition off.
NOTE: Raise the seat to the highest position to gain access to the connectors. The
MHSMM is located at the front of the drivers seat and the Seat Heater connectors are
at the rear of each seat.
Disconnect the Passenger Heated Seat Cushion 4-way connector.
Measure the resistance between the Seat Temp Sensor Input in the heated seat
cushion connector, cushion side and body ground.
Is the resistance below 1000.0 ohms (should be infinite)?
Yes → Replace the Passenger Seat Cushion.
→ Go To 6
No
6 If there are no possible causes remaining, view repair.
Repair
ACTION
short to ground.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
Replace the Memory Heated Seat Mirror Module
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
208
Continued
APPLICABILITY
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