300M V6-3.5L VIN G (2000)
Body Control Module: Customer Interest
Heated Seat Module/BCM - Erroneous DTC's Set
NUMBER:
08-26-99
GROUP:
Electrical
DATE:
Aug. 6, 1999
SUBJECT:
Erroneous "Heated Seat Switch Missing/Shorted to Ground" DTC
MODELS:
1999 - 2000 (LH) LHS/300M
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT AFTER MAY 10, 1999 (MDH 051 0XX).
SYMPTOM/CONDITION:
Diagnostic Trouble Codes (DTC's) "Driver and Passenger Heated Seat Switch Missing/Shorted to Ground" may be set when ignition is cycled from ON
to OFF. The heated seat switch will lose power prior to the Memory Heated Seat/Mirror Module (MHSMM) receiving an ignition OFF message from the
Body Control Module (BCM). It will appear as if the switch is not connected to the MHSMM, setting the faults. This will not occur on every ignition
ON to OFF transition.
DIAGNOSIS:
The following procedure will assure that if the DTC's are present, they were set due to the above condition, and a true fault condition does not exist:
1.
Clear all MHSMM faults.
2.
Turn vehicle ignition ON. Using a DRBIII(R) verify that the heated seat switch voltage is approximately 1 V when the switch is in the "off"
position.
3.
If the voltage reading is 0 V, verify that the switch connector is plugged in properly. If so, follow repair procedures outlined in 1998 Chrysler
Concorde/Dodge Intrepid/1999 300M/LHS Body Diagnostic Procedure Manual (Publication No.81-270-97229) Memory System Tests 25A and
32A.
NOTE:
MHSMM FAULT COUNTERS WILL BE RESET AFTER 20 IGNITION CYCLES.
POLICY: Information Only
