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Check the relays in the fuse box. It appears that the solenoids for locking the doors are working correctly. However it appears that the lock solenoid is not working properly.
The keyless entry system is controlled by the (GEM) - generic electronic module .
Keyless Entry
The electronic door lock system has two main components:
generic electronic module (GEM)(14B204)
keyless entry remote transmitter (15K601)
NOTE: Battery power and ground must be remove before disconnecting the GEM connectors to avoid setting false codes.
Power Locks Operation
The power locks feature allows the customer to lock and unlock the doors via momentary switches located on the driver and passenger door. When the GEM detects a momentary press of the driver or passenger lock button, the GEM will supply power to the driver or passenger lock actuators for approximately 250 ms from relays internal to the GEM. When the GEM detects a momentary press of the driver or passenger unlock button, the GEM will supply power to the driver or passenger unlock actuators for approximately 250 ms from relays internal to the GEM.
Remote Keyless Entry Door Locks Operation
The remote entry feature allows the customer to unlock the driver door, unlock all doors, and lock all doors using a valid remote transmitter as long as the ignition switch is not in RUN or START. The driver door is unlocked whenever the GEM detects a valid remote transmitter unlock transmission. All the doors are unlocked when the GEM detects a second valid remote transmitter unlock transmission within three seconds of the first transmission. All the doors are locked when the GEM detects a valid remote transmitter lock transmission. If the GEM detects a second valid remote transmitter lock transmission within three seconds of the first transmission, the doors will lock again, the horn will sound for 20 ms and the parking lamps will flash for 200 ms to indicate the doors are locked. If the GEM detects the driver or passenger door is ajar during the second lock transmission, the doors are locked again and the horn is sounded twice. If the GEM detects a valid remote transmitter lock transmission within three seconds of detecting a valid remote transmitter unlock transmission, the GEM will lock all the doors
The doors do not lock/unlock using the remote transmitter
Ignition switch.
GEM.
Remote transmitter.
Remote transmitter batteries.
GO to Pinpoint Test C .
You followed the program instructions to the letter ?
Programming -Keyless Entry Remote Transmitter
NOTE: All keyless entry remote transmitters (15K601) must be programmed at the same time. NOTE: All previous transmitter identification codes (TIC's) will be erased when programming mode is entered. NOTE: To program (or reprogram) the keyless entry remote transmitters into the generic electronic module (GEM)(14B204), perform the following steps.
Turn the ignition from OFF to RUN eight times within 10 seconds, ending in RUN. If the GEM has successfully entered program mode, it will lock and unlock all the doors.
NOTE: The first TIC must be entered within 7.5 seconds of entering the program mode and additional TICs must be entered within 7.5 seconds of the first TIC. The programming mode is exited whenever the timing constraints are not met.
Press any button on a keyless entry remote transmitter, and the doors will lock and then unlock to confirm that each keyless entry remote transmitter has been programmed.
If the door locks do not respond for any keyless entry remote transmitter, wait for several seconds and press the button again.
Turn the ignition switch to the OFF position, or wait up to five minutes after step 1, to exit program mode. If a keyless entry remote transmitter has been programmed (or reprogrammed), the GEM will lock and unlock all the doors one last time.
Take an have the vehicle checked for DTC'S
B1396
Power Door Lock Circuit Short to Battery
GEM
GO to Pinpoint Test B .
B1397
Power Door Unlock Circuit Short to Battery
GEM
It has to be the switch or the wiring, right? So pull out the switch and probe the back with a volt meter to see if power is coming out of the switch. If yes, trace the wires to the doors.
Does the switch inside for that door work ? Does the power window work for that door ? Check fuse DDM - 15 amp I/P fuse panel . Do you know where the insturment panel fuse box is located ?
Fuse Block - I/P
Left of the I/P behind the side trim panel
# 4
DDM Fuse
15A
Driver Door Module (DDM)
Do you know anything about automotive electronic's , control module's ? Serial data communication networks ?
Circuit/System Description
The driver and passenger door lock and side window switches are integrated control module switch assemblies. The DDS and PDS door lock switches are normally open, 2 position rocker type switches, with detents for lock and unlock. The DDS and PDS are directly connected to the respective door lock actuator through the door lock actuator control circuits. When a door lock or unlock function is activated from the DDS or PDS, a serial data message lock or unlock command is sent to the other door switch and body control module.
Hi, I have a 2005 MCSc Just like yours. All of the forums know of this frequent problem. All suggest lightly hitting the door just above the door speaker as you toggle the switch up. It has worked for me several times. Beleive me you feel kinda stupid hitting the door to make the window work but it works. Seems like the limit positioning switch gets stuck especially in the heat. Good Luck.
try removing panel and check for loose or worn contacts, or replace the panel cluster with a new unit or one from a junked unit in good condition if cost is a factor
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