Chrysler 300M 2002 Service Manual page 1930

Symptom:
PASSENGER THERMISTOR OUT OF RANGE LOW
When Monitored and Set Condition:
PASSENGER THERMISTOR OUT OF RANGE LOW
When Monitored: Ignition on, during the heated seat operation.
Set Condition: This code is immediately set when the Memory Heated Seat/Mirror
Module senses a lesser value than the value stored in EEPROM.
PASSENGER SEAT TEMP SENSOR INPUT OPEN
PASSENGER SEAT TEMP SENSOR INPUT SHORT TO GROUND
PASSENGER SEAT TEMPERATURE 5 VOLT SUPPLY WIRE OPEN
PASSENGER SEAT TEMPERATURE 5 VOLT SUPPLY SHORT TO GROUND
PASSENGER SEAT HEATER SENSOR OPEN
PASSENGER SEAT TEMP SENSOR SHORT TO GROUND
MEMORY HEATED SEAT MIRROR MODULE
MEMORY HEATED SEAT MIRROR MODULE
TEST
1 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.
Turn ignition on.
Measure the voltage between Seat Sensor 5 Volt Supply circuit and body ground.
Is the voltage below 4.5 volts?
→ Go To 2
No
Yes → Go To 7
2 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 from
the MHSMM connector to the passenger heated seat cushion connector, harness side.
Is the resistance below 5.0 ohms?
Yes → Go To 3
→ Repair the open Passenger Seat Temperature Sensor Input cir-
No
ELECTRICALLY HEATED SYSTEMS
POSSIBLE CAUSES
ACTION
cuit.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
207
APPLICABILITY
All
All