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Installing electronic door locks trying to find where the relay for the door lock is

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  • yadayada
    yadayada Dec 14, 2016

    Make model and year are needed to answer this.

  • Brad Brown Dec 14, 2016

    Hi edward ramos, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Make model and year



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Door locks don't work

Disassemble the paneling on left side ,under the steering wheel. Remove all screws and pull out the panel until you can you can reach behind it to remove the two Black Relays, on the side closest to Steering wheel. Remove the Relay covers, Clean the contacts with a 1/8 fine strip of 600 wet/dry sand paper. Only place the paper between the contacts, and pull out while holding slight pressure on the relay Armature. Turn over the sandpaper and repeat once again. Very gently press the TOP resting contact pad closer to the armature, to lessen the gap between the contact points, so the armature doesn't have to travel as far to reach the closed contact position. Repeat the above with the other2nd Relay. Replace the covers, reinstall the relays And test the Door locks prior to buttoning up the paneling. Note, a pair of long needle nosed pliers will help in removing the relays. Just Grip the relay and rock in Forward and Backward as you apply upward pressure.

Posted on Oct 09, 2008

  • 8 Answers

SOURCE: I found a loose spring to my door lock 99' Ford Explorer.

76df6f5.jpgthis This is what you have to do.Go to the hardware store and get a spring just like in the pic maybe smaller. Put the bottom side just like in the pic and the top side of the spring on the door cilynder. And you are done.

Posted on Jun 23, 2009

  • 4369 Answers

SOURCE: 2000 Ford Focus automatic door locks quit working.

check fuse 63 first.

Visual Inspection Chart Mechanical Electrical

  • Binding latch mechanisms
  • Binding linkage
  • Misaligned door
  • Central junction box fuse 63 (20A)
  • Damaged wiring harness
  • Loose or corroded connection(s)
  • Circuit
  • Door lock switch
  • Door lock actuator

It could also be your GEM (generic electronic module) which is expensive as it controls a lot of stuff. A scan tool can be used to cehck for fault codes from the GEM.

Posted on Jun 23, 2009

  • 14036 Answers

SOURCE: Buick regal door locks not working correct


Posted on Sep 18, 2009

  • 1280 Answers

SOURCE: 2004 Hyundai Sonata door lock functions inoperable.

you have a bad relay.. the 'lock' relay.

Posted on Sep 23, 2009

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1 Answer

1999 blazer Doors lock and unlock even when parked, help

Lock an unlock by them selves ? Door locks are computer controlled ,by the BCM - body control module .
Power Door Locks Circuit Description
The power door lock system includes the following components:
• The door lock actuators
• A door lock relay
• An door unlock relay
• A driver door unlock relay
• The door lock and side window switches
• The body control module (BCM)
• The endgate lock cylinder switch /liftgate lock cylinder switch (utility)
• The keyless entry, if equipped
The door lock and liftgate mechanisms may be controlled by the following switches:
• The door lock and side window switches
• The BCM
• The endgate lock cylinder switch / liftgate lock cylinder switch (utility)
• The keyless entry, if equipped
The following locking functions are included on the vehicle:
• All the doors unlock -- All the doors will unlock, including the endgate/liftgate, when any power door unlock switch is detected. The passenger doors lock directly by pressing the lock switches. The driver door unlocks by the BCM using a driver door unlock relay.
• All the doors lock -- All the doors will lock, including the endgate/liftgate, when any power door lock switch is activated. All the lock actuators will activate directly from the power door lock switch (external to the BCM).
• The end/lift gate lock switch -- All the doors will lock or unlock from the end/lift gate lock switch.
• The lockout prevention -- This function will prevent the doors from automatically locking if the keys have been left in the ignition and the power door lock switch is operated.
The motor is protected by a built-in electronic circuit breaker (ECB). If the motor is overloaded or voltage is applied for an excessive amount of time, the ECB internal resistance increases, essentially creating an open circuit. The resistance returns to normal only after voltage is removed from the circuit, thereby restoring circuit continuity.

You have a bad switch input to the BCM !
Door lock acting up 2005 Chevy Malibu fix it here
Door Locks Go Crazy 2

Jan 07, 2018 | Cars & Trucks

1 Answer

Code b3138 door lock circuit high on 05 Chevy Astor van what does that mean

Do you know anything about automotive electronic's ? What a BCM is ? body control module (computer) or anything about automotive electrical circuit's ?
DTC B3137 or B3138
DTC Descriptors
This diagnostic procedure supports the following DTCs:
• DTC B3137 All Door Lock Circuit Low
• DTC B3138 All Door Lock Circuit High

What this is saying is the BCM saw a higher then normal voltage on that door lock circuit . Looking at diagnostic trouble shooting chart for that code should be done by a qualified service technician .

Circuit Description
The body control module (BCM) monitors and supplies an output voltage on the door lock control circuit. When the BCM receives a lock command from the remote control door lock receiver or an automatic door lock function has been activated, the BCM supplies voltage on the door lock control circuit to LOCK the doors.

Install a scan tool.
With a scan tool, command the door lock relay ON and OFF.
Does the door lock relay turn ON and OFF with each command?

Disconnect the door lock relay.
Probe the door lock control circuit at the door lock relay with a test lamp connected to a good ground.
With a scan tool, command the door lock relay ON and OFF.
Does the test lamp turn ON and OFF with each command?

Learning how to test electrical circuit's an using a wiring diagram an a DVOM - digital volt ohm meter or test light is how to find the problem .
Electric Testing Techniques You Need to Know

Free wiring diagrams here
Enter vehicle info. year , make , model an engine size . Under system click on body & accessories ,then under subsystem click on power lock's . Click the search button ,then the blue link's one at a time . You may want to watch some video's on how to read a wiring diagram .

Dec 13, 2017 | Cars & Trucks

1 Answer

All power locks not working on 2000 Ford Explorer. Sometimes when you stop it makes a lot of noise as if they are locking and unlocking. Now they only lock and do not unlock and therefore we can no longer...

Check the door unlock relay located in the AUX relay box #2 .
Auxiliary Relay Box #2, 2 Door w/Electronics Group
Left rear of vehicle, above wheelwell
Auxiliary Relay Box #2, 2 Door w/o Electronics Group
Left rear of vehicle, above wheelwell
Auxiliary Relay Box #2, 4 Door w/Electronics Group
Left rear of vehicle, above wheelwell
You need to take rear trim panel off to view this relay box. There is a seperate relay for lock

Aug 19, 2017 | 2000 Ford Explorer

1 Answer

Power lock

check door locks fuses and relays.if all is good and you cant operate door lock buttons manually problem could be in the generic electronic module.if door locks dont work from the remote battery could be dead in remote transmitter.try to reset door locks control module first obtain all remote transmitter.sit inside vechicle with all doors closed.switch ignition from off to on 8 times in 10 seconds. doors should lock then unlock.when this procedure works then press any button on any of the remote transmitter doors should lock and unlock.if all fails let dealership fix..

Dec 27, 2012 | 1998 Ford Windstar

1 Answer

98 ford explorer Driver side power lock button doesn't work

The button may be defective. Unlike the other doors, if you have the electronic group there is a separate driver's door unlock relay which reverses the door lock motor, probably to disable the theft alarm and allow your fob to open just that door for entry. This relay could be defective. The master switch operates through door lock and door unlock relays and those relays could be defective also.

Sep 07, 2012 | Cars & Trucks

1 Answer

I have a 08 chevy avalanche the driver side front and rear door locks won't work when I use my keyless entry button or on the inside driver panel. Could it be a fuse? Passenger side works fine I try...

Do the power windows work ? DDM - driver door module fuse 15 amp - location is the instrument panel fuse box , plus LT DR circuit breaker 25 amp. Circuit breakers rarely go bad . The power locks are controlled by electronic's .The passenger side has another power supply ,that's why they still work .
Door Lock System Components
The power door lock system consists of the following components:
• The driver door switch (DDS)
• The passenger door switch (PDS)
• The body control module (BCM)
• The driver information center (DIC)
• The rear door lock/unlock relay (LBEC)
• The reversible door lock actuators in each of the doors and liftgate

The front power door lock switches are integral components of the driver door module (DDS) and passenger door module (PDS). The switches are 2 position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDS or PDS. The DDS or PDS monitors these inputs and sends a LAN message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the LAN message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock/unlock relay and also send a LAN message to the DDS and PDS to perform the appropriate function.
The modules which activate the power lock motors are:
• The DDS (driver door lock actuator)
• The PDS (passenger front door lock actuator)
• The BCM (both rear door lock actuators and cargo door/liftgate)
The DDS and PDS are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
The rear passenger and endgate doors are controlled by the BCM through the rear door lock/unlock relay which is incorporated onto the printed circuit board in the LH BEC. The BCM controls the unlock relay by providing ground to energize the coil and controls the lock relay by providing battery voltage to energize the relay coil. The energized the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. Since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.

It's possible you have broken wire or wires inside the flex boot from the body of the vehicle to the driver's door . This happens a lot .
Fuse Block - I/P instrument panel
Left of the I/P behind the side trim panel

Mar 04, 2018 | 2008 Chevrolet Avalanche

1 Answer

Keyless entry won't work, only drivers side works electronically

Look for a door lock relay in the fuse panal alot of them are the same swap them around with the door lock one to see if it is bad

Dec 27, 2009 | 2003 Chevrolet Silverado 1500

2 Answers

My miata battery drains all th time

try this can also use a test light instead of an ammeter to see which circuit is draining the battery:

Jun 16, 2009 | 2003 Mazda MX-5 Miata

1 Answer


First dissconect the battery and try to turn door key with no voltage applied to vehicle. This will ensure it is not a damaged key. If door locks turn, reconnect battery. Hopefully during disconnect your electronic door locks de-energized. If keys don't work with battery disconnected then the fault doesn't have to do with your battery or electric locks at all. If they work with a disconnected battery and not with it connected you are have an electrical short, either in a switch it's self or the wiring to the door lock switches. In this case I recommend taking the vehicle to a shop for repairs, electrical can get in depth without proper tools and diagrams

Nov 24, 2008 | 2003 Chevrolet Silverado 1500

1 Answer

1999 oldsmobile Alero Door Lock

sound like the bi directional solenoid. your power window has two of them . unlock solenoid lock solenoid .sound like the lock solenoid is bad or the relay or it could be a short.

Oct 08, 2008 | 1999 Oldsmobile Alero

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