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2005 Chevy Equinox Driver & Passenger Door Unlock Relay. How To Remove & Install. They Are Power Locks. Front Doors Must Roll Windows Down Use Hand To Open Thanks. Ms. J. C.

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Door Lock and Unlock Operation
When a door lock switch is activated in the lock or unlock position the BCM will receive a voltage signal on either the door lock switch lock or unlock signal circuits.
The BCM, upon receipt of a lock switch lock or unlock signal, will switch the appropriate lock relay control circuit(s) to battery positive voltage. This will energize the appropriate lock or unlock relay(s). The relay will supply voltage to the door lock actuator lock or unlock control circuits to one side of the lock actuator. Since the opposing side of the lock actuators are connected to ground through the other lock actuator control circuit and the normally closed contacts of the lock or unlock relay, the doors and liftgate will then lock or unlock appropriately.
Three relays are used to operate the lock. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked by itself using the keyless entry transmitter.
Your door locks are controlled by the BCM - body control module (a computer ) . An a scan tool is a must to diagnose system operation . Your best bet would be to take your vehicle to a qualified repair shop . The only way you could try to fix this is by changing parts ! Suppose you find an replace a door lock/ unlock relay an that doesn't fix it ? There could be DTC'S stored in the BCM . Do you know what a DTC is ?
?€¢
DTC B3132 All Door Unlock Circuit Low


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DTC B3133 All Door Unlock Circuit High




Your

Posted on Aug 10, 2016

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  • Cars & Trucks Master
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J. , Possible wiring/plug issue, you may have to find a good Tech. to diagnose and estimate repair. Posted the fuse boxes for you vehicle, did not see any pwr lock relay, contact the dealer, the power door lock relay may be built into the BCM (body control module). Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Chevrolet Equinox mk1 2005 2009 fuse box diagram Auto Genius
automatic door lock problems
08 Nox doors wont lock unlock Chevy Equinox Forum GMC Terrain Forum...

Posted on Aug 10, 2016

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6 Suggested Answers

6ya6ya

6ya staff

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Posted on Jan 02, 2017

Anonymous

  • 11 Answers

SOURCE: power doors and windows won't operate

What you should have done a long time ago is buy the Chilton's or Haynes' manual for your vehicle - if you had, chances are you wouldn't be asking this question on here. And if you had checked your fuses, especially for your doors and windows - power windows and locks is my clue about the fuses - you wouldn't be on here either. Odds are extremely high that the regulators for BOTH the power windows and locks AND for several of them, would go out all at once. So go to the auto parts store, get the repair manual - (about $20) - and check it for the size of fuses you need -old style or new style, depends on ago of vehicle, and go to the register and buy and then go home and flip through it. And you want to get a code reader at some point in time too. Both the manual and the code reader will help you be better informed AND will help answer questions.

Posted on Jan 24, 2009

jackdo2

  • 314 Answers

SOURCE: 2005 chevy tahoe drive door no power to switches

Flgators1885 - There is a bundle of wires running through the door harness into the chassis. This group of wires controls all of the drivers door functions. If there is a short due to frayed insulation in one or more wires and or moisture has penetrated the harness or the switch, a dead short could occur, which sounds like your problem as it is unlikely all of the individual switches would fail at the same time. Do a visual inspection for damage to the harness and moisture penetration/ check all fuses /check for power at the switch as it sounds like it has gotten wet. Before taking the door panel off try blowing compressed air over the switch opening in an attempt to remove any moisture present. If could be something as simple as a loose switch connector but the door panel will have to be removed to troubleshoot further.

Posted on Apr 22, 2009

Anonymous

  • 4 Answers

SOURCE: 2005 Chrysler Pacifica passenger doors have no power

If your alarm went off, it could be that someone had tried to break into your car. They most likely may have cut some of the wires inside your door with what ever device they may have been using. Look for evidence between the bottom of the windows and doors where the problem is. If not, then it is possible that your automatic window assemblies are malfunctioning. Do you hear the motors run on the windows when you go up or down with the switch? I also have a Pacifica, 2005, however no window problems yet.

Good Luck,

Ray

Posted on May 11, 2009

adnanbhatti

Adnan Bhatti

  • 1188 Answers

SOURCE: The passenger side front and rear power windows 2005 Lexus ES

Fuse is blown. Replace fuse for the said windows.

Posted on Jul 30, 2009

theoldiesdon

John Gardner III

  • 10 Answers

SOURCE: I Have A 2005 Chevy Equinox With Power Door Locks.Remote Has Not Worked For 2 Yrs. Replaced Computer In SUV 2.5 Yrs Ago. Locks Were Working. Now Driver & Front Passenger Door Won't Open.

First check the battery in your remote.

Posted on Apr 23, 2016

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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 .
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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 !
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Jan 07, 2018 | Cars & Trucks

1 Answer

I have a 2005 Chevy extended cab 1500 and the controls on my driver side door aren't working. The door is saying it ajar when it's closed. I can't roll the windows up or down. Is it the master switch?


How to fix the Chev power window door lock switch - YouTube

? 5:04
https://www.youtube.com/watch?v=XDKaDURD8Sc
Jul 13, 2013 - Uploaded by spelunkerd
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Dec 26, 2015 | Cars & Trucks

2 Answers

2009 chevy equinox rear passenger door won't unlock with remote


Lock/unlock motor may be failing. Remove the door panel and remove the connector from the lock motor. Check the dc voltage at the connector while pressing the lock switch. If you see battery voltage, replace the motor. If the voltage is low, inspect the wiring.

Aug 15, 2017 | 2009 Chevrolet Equinox

1 Answer

2005 Chevrolet Tahoe Power Windows and Power Locks not working.


The power windows an power locks are controlled by a module , DDM - driver door module . As far as the locks locking when you put the vehicle into reverse an unlocking when you put the vehicle into park , that's how there are suppose to work , automatic lock an unlock feature . When you put the vehicle into any gear from park the locks should lock . Did she hit window lockout function ?

The power door lock system consists of the following components:
• The driver door module (DDM)
• The passenger door module (PDM)
• The body control module (BCM)
• The driver information center (DIC)
• The rear door lock switch
• The door lock relay
• The door unlock relay
• The liftgate lock relay--utility vehicles with liftgate only
• The reversible door lock actuators in each of the doors and liftgate
• LOCKS 20A fuse (rear lock/unlock relay supply voltage)
• ECC 10A fuse (liftgate lock relay supply voltage .

Programmable Automatic Door Locks
The automatic door lock feature can be programmed to control the door lock system. The automatic door lock feature is factory programmed to have all doors lock and unlock. For detailed instructions on programming the automatic door locks, refer to Vehicle Personalization in Personalization.
When the automatic door lock feature is programmed to control the door lock system, the driver door module (DDM), passenger door module (PDM) and body control module (BCM) will lock the vehicle doors if the following inputs are true:
• Ignition 1 input is active.
• All door jamb switch inputs are inactive.
• Cargo door or liftgate/liftglass ajar inputs are inactive.
• Transmission is shifted out of park.
This automatic door lock function will only occur once per ignition cycle unless, a door jamb switch input changes state to active and back to inactive. Then the DDM, PDM and BCM will lock all doors again.
Once the automatic door lock feature has locked the doors, the BCM will then unlock all the doors when the transmission is shifted into park.
Driver, Passenger and Cargo Door Lock System Operation
The front power door lock switches are integral components of the driver door module (DDM) and passenger door module (PDM). The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 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 relays and also send a Class 2 message to the DDM and PDM to perform the appropriate function.
The modules which activate the power lock motors are:
• The DDM (driver door lock actuator).
• The PDM (passenger front door lock actuator).
• The BCM (both rear door lock actuators and cargo door/liftgate).
The DDM and PDM 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 cargo doors differ slightly in that they use lock and unlock relays. The relays supply and coil sides receive a constant voltage through the battery voltage supply circuit. The normally closed contacts are connected to ground and the control side is connected to the BCM. Once a door lock or unlock request has been received by the BCM, the BCM will ground the control side of the appropriate relay. This energizes 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.

Mar 16, 2017 | 2005 Chevrolet Tahoe

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

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I've had the exact opposite issue with my 2005 Equinox.
My rear door is locked and will not unlock.

Mar 23, 2010 | 2005 Chevrolet Equinox

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Replace the remote battery first, then the remote.

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i work at a chevy dealership,just had the same problem my fix was to replace the power door lock relay located on drivers side interior fuse block

Jan 21, 2009 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

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make sure than you have not split any fluids on the passenger front door most of the times is where the module to control the windows and doors is located, try by unpluging the batterie and the after a minute plug it back and see what happend but if any of your ft doors have been split with liquid or rain has gone inside then most likelly the module got moisture and not working

May 31, 2008 | 2003 GMC Yukon

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