Question about 2005 Cadillac STS

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New 2009 STS with the same problem- driver door will not open

Car in the shop for the third time- car has keyless entry but driver door handle does not respond and won't open even if unlock button is pressed on the remote. The problem is that it only happens sometimes and not always. We are looking at a lemon Law buy back if it isn't fixed this time. The problem- I really like the car!

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All the best with it mate

Posted on Jul 27, 2009

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Door lights will not go out.


Spray a lot of WD-40 or Blaster in the latches on the inside rear of each door. Most likely the drivers door is the issue because it sees the most use. There is a switch on the interior side of the latch that gets stuck. If that does not work, it is possible the GEM module has failed. I believe I have a couple of these if you need one, but usually the switch sticks open (on or depressed and it's normally closed) on the driver door.
Illuminated Entry Illuminated entry is included as a function of the generic electronic module (GEM). The illuminated entry system may be activated in the following three ways:
  • Raise the outside door handle (22404).
  • Press a code button on the keyless entry keypad (14A626).
  • Press the UNLOCK button on the keyless entry remote transmitter (15K601).
Electrical flow through the system is as follows:
  • An interior lamp switch (13752) mounted on the front door latch (21812) closes, completing the circuit of the GEM. This switches the system ON.
  • This illumination will remain on for approximately 25 seconds and then automatically turn OFF.
  • During this 25 second period, the system can be deactivated by turning the ignition switch (11572) to RUN position, locking the doors with the keyless entry remote transmitter or keyless entry keypad or by battery saver time out.
  • The system will turn on every time the outside door handles are operated.
  • Opening the front doors (20124) or rear doors (24630) from the inside of the vehicle will not turn on the system.
  • If the outside door handle is held up so that the interior lamp switch is continuously closed, the system will operate as normal and turn off after 25 seconds.
  • If the door handle is still in the raised position, the system will remain off and it will be impossible to activate the system from the other front door handle until the raised door handle is returned to its normal position.
  • This is built into the logic circuitry of the system to prevent battery discharge should the outside door handle be propped up or become jammed in any way.
The system consists of:
  • generic electronic module (GEM).
  • interior lamp switch.
  • wiring harness.
The GEM is mounted directly to the fuse junction panel (14A067) The interior lamp switch is retained to the front door latch by a keyed slot and is twisted into position.

Jan 08, 2010 | 1996 Ford Taurus

1 Answer

2000 Lincoln Towncar. Keypad on door will not unlock doors. Interior lights do come on. The last two keys pushed simultaneously will occasionally lock the doors. I am using the code printed on a sticker in...


The driver door module (DDM) is connected on the standard corporate protocol (SCP) communication network. The DDM controls many functions including power windows, power door locks and remote keyless entry. The DDM also communicates with the driver seat module (DSM) to control the power mirror and seat memory functions.
Do you know anything about automotive electronic control modules ?
The driver door module (DDM) receives inputs from the digital transmission range (DTR) sensor, ignition switch, seat switch, window/door lock switches, lighting control module (LCM), keyless entry keypad switch and remote transmitter. The DDM outputs consists of keyless entry keypad switch illumination, power door lock actuators, luggage compartment release solenoid, horn relay, and lighting control module (LCM).
Best thing to do would be to have a factory scan tool hooked up to check for DTC'S diagnostic trouble codes . That should be the first step if it's not programming the code.
  • The doors do not lock/unlock using the keyless entry keypad
  • Keypad.
  • Circuitry.
  • Driver door module (DDM).
  • GO to Pinpoint Test L .

PINPOINT TEST L: THE DOORS DO NOT LOCK/UNLOCK USING THE KEYLESS ENTRY KEYPAD CONDITIONS DETAILS/RESULTS/ACTIONS L1 RETRIEVE THE RECORDED RESULTS FROM BOTH CONTINUOUS AND ON DEMAND SELF TESTS Use the recorded DDM DTCs from the Continuous and On Demand self tests.
  • Are any DTCs recorded?
Yes For DTC B1525, GO to L3 .

For all other DDM DTCs, REFER to the DDM Diagnostic Trouble Code (DTC) Index.

No If the door locks are inoperative, GO to L2 .

If the keypad illumination does not operate, GO to L10 .

If the keypad illumination is on continuously, GO to L14 .
L2 CHECK THE DOOR LOCK OPERATION Check the door lock operation by depressing a door lock switch.
  • Do the door locks operate?
Yes GO to L3 .

No GO to Pinpoint Test E . L3 MONITOR THE DDM PID KEY_PAD
Scan tool
Monitor the DDM PID KEY_PAD.
  • Are any of the keyless entry keypad switch numbers present?
Yes GO to L4 .

No GO to L5 . L4 CHECK THE KEYLESS ENTRY KEYPAD SWITCH
Keyless Entry Keypad Switch C525
Monitor the DDM PID KEY_PAD.
  • Are any of the keyless entry keypad switch numbers present?
Yes If 1/2, REPAIR Circuit 78 (LB/YE). TEST the system for normal operation.
If 3/4, REPAIR Circuit 79 (LG/RD). TEST the system for normal operation.
If 5/6, REPAIR Circuit 121 (YE/BK). TEST the system for normal operation.
If 7/8, REPAIR Circuit 122 (YE). TEST the system for normal operation.
If 9/0, REPAIR Circuit 123 (RD). TEST the system for normal operation.

No INSTALL a new keyless entry keypad switch; for additional information, REFER to Keypad-Keyless Entry . L5 CHECK THE KEYLESS ENTRY KEYPAD INPUT WITH THE KEYLESS ENTRY KEYPAD SWITCH Monitor the DDM PID KEY_PAD, while depressing all the keyless entry keypad switches one at a time.
  • Are all the keyless entry keypad switches operating correctly?
Yes GO to L9 .

No GO to L6 . L6 CHECK CIRCUIT 797 (LG/VT) FOR VOLTAGE
Keyless Entry Keypad C525
Measure the voltage between keyless entry keypad C525-7, Circuit 797 (LG/VT), and ground; and between keyless entry keypad C525-8, Circuit 797 (LG/VT), and ground.
  • Are the voltages greater than 10 volts?
Yes GO to L7 .

No REPAIR Circuit 797 (LG/VT). TEST the system for normal operation. L7 CHECK THE KEYLESS ENTRY KEYPAD SWITCH INPUT While monitoring the DDM PID KEY_PAD, momentarily connect a fused (7.5A) jumper wire between positive battery post and keyless entry keypad switch C525 as follows:
    Keypad Button Keyless Keypad Switch C525 Circuit 1/2 Pin 3 78 (LB/YE) 3/4 Pin 4 79 (LG/RD) 5/6 Pin 5 121 (YE/BK) 7/8 Pin 6 122 (YE) 9/0 Pin 1 123 (RD)

  • Are all the keyless entry keypad switch inputs operating correctly?
Yes INSTALL a new keyless entry keypad switch; for additional information, REFER to Keypad-Keyless Entry .

No GO to L8 . L8 CHECK THE KEYLESS ENTRY KEYPAD SWITCH CIRCUITRY FOR AN OPEN
DDM
Measure the resistance between keyless entry keypad switch C525 and DDM as follows:
    Keyless Keypad Switch C525 DDM Circuit Pin 3 C521 Pin 8 78 (LB/YE) Pin 4 C521 Pin 13 79 (LG/RD) Pin 5 C521 Pin 16 121 (YE/BK) Pin 6 C520 Pin 24 122 (YE) Pin 1 C520 Pin 25 123 (RD)

  • Is the resistance less than 5 ohms?
Yes INSTALL a new DDM; for additional information, REFER to Section 419-10 . TEST the system for normal operation.

No REPAIR the circuit in question. TEST the system for normal operation. L9 CHECK THE KEYLESS ENTRY KEYPAD BACKLIGHT Depress a key on the keyless entry keypad.
  • Does the keypad illumination operate correctly?
Yes INSTALL a new DDM. For additional information, REFER to Section 419-10 . TEST the system for normal operation.

No If the keypad illumination does not operate, GO to L10 .

If the keypad illumination is on continuously, GO to L14 . L10 CHECK THE KEYPAD - DDM ACTIVE COMMAND KEYPAD BACKLIGHTING LIGHT ON AND OFF Trigger the DDM active command KEYPAD BACKLIGHTING LIGHT ON and OFF.
  • Does the keypad illumination turn off and on?
Yes INSTALL a new DDM. For additional information, REFER to Section 419-10 . TEST the system for normal operation.

No GO to L11 . L11 CHECK DDM GROUND - JUMPER CIRCUIT 66 (LB) TO GROUND
DDM 522
Connect a fused (7.5A) jumper wire between DDM C522-4, circuit 66 (LB), and ground.
  • Does the keypad illuminate?
Yes INSTALL a new DDM; for additional information, REFER to Section 419-10 . TEST the system for normal operation.

No GO to L12 . L12 CHECK CIRCUIT 51 (BK/W) FOR OPEN
Keyless Entry Keypad C525
Measure the voltage between keyless entry keypad C525-7, circuit 797 (LG/VT), and ground; and between keyless entry keypad C525-8, circuit 797 (LG/VT), and ground.
  • Are the voltages greater than 10 volts?
Yes GO to L13 .

No REPAIR circuit 797 (LG/VT). TEST the system for normal operation. L13 CHECK CIRCUIT 66 (LB) FOR OPEN Measure the resistance between keyless entry keypad C525-2, Circuit 66 (LB), and DDM C522-4, Circuit 66, (LB).
  • Is the resistance less than 5 ohms?
Yes INSTALL a new keyless entry keypad switch; for additional information, REFER to Keypad-Keyless Entry .

No REPAIR Circuit 66 (LB). TEST the system for normal operation. L14 CHECK THE KEYPAD ILLUMINATION - DDM DISCONNECTED
DDM C522

  • Does the keypad illumination turn off?
Yes INSTALL a new DDM; for additional information, REFER to Section 419-10 . TEST the system for normal operation.

No GO to L15 . L15 CHECK KEYLESS ENTRY KEYPAD FOR SHORT TO GROUND
Keyless Entry Keypad C525

  • Does the keypad illumination turn off?
Yes GO to L16 .

No INSTALL a new keyless entry keypad switch. For additional information, REFER to Keypad-Keyless Entry . TEST the system for normal operation. L16 CHECK CIRCUIT 66 (LB) FOR SHORT TO GROUND Measure resistance between DDM C522-4, circuit 66 (LB), and ground.
  • Is resistance greater than 10,000 ohms?
Yes System OK. CLARIFY the concern with the customer.

No REPAIR circuit 66 (LB). TEST the system for normal operation.

Nov 03, 2017 | Lincoln Town Car Cars & Trucks

3 Answers

LHJ001 WIRING


I have the 1995-97 Lincoln Continental Alarm, Remote Starter, Keyless Entry Wiring, review it:

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Hope helped.

Oct 30, 2009 | 1996 Lincoln Continental

2 Answers

Reprogram a keyless entry remote


Hello
this is how to program the remotes/keyless entry

How
  • Obtain all remote transmitters
  • enter the 5 digit permanent code into the keyless entry pad on the drivers door
  • Press the 1-2 switch on the keyless entry pad
  • Within 5 seconds
  • Press any button on the first remote transmitter
  • The doors should open then lock
  • Within 5 seconds
  • press any button on the second & third remote
  • within 5 seconds for each remote
  • to exit programming
  • simultanionusly press 7-8 & 9-0 switchs on the key pad or wait more then 7.5 seconds
NOTE
The 5 digit permanent code is located in one of the following places
  1. On the owners warranty card
  2. On the label on the inside the trunk/ boot
  3. On the owners code card
  4. On the centrel locking control module located in the drivers door
  5. In the PCM ford can get this for about $25.00
I hope this help
Regards Paul
www.limotec.co.uk

Jan 13, 2009 | 1995 Lincoln Town Car

2 Answers

Door handle stuck


need to remove door panel either the linkage clip either broke or disconnected --if have remote start on fob need dealer to program--if normal try these links
Lexus Free Keyless Remote Fob Entry programming instructions Free Keyless Remote Fob Entry programming instructions procedures for all...

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Mazda MPV 2000


Try "resetting" your keyless entry code. Which is a fancy way of explaining that I broke my keyless entry key fob and had to order a new one. It came w/ instructions explaining how to get the new fob to speak to the car's computer. It was weird (turn key on and off 3 times, open and close door three times, etc. **I'm sure my neighbors were watching and laughing**), but it worked. I'll scan and email you the insrtuctions if you wish. Dan: dcarterlaw@lycos.com

Jul 07, 2008 | 2000 Mazda MPV

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