hola , compre una minivans toun country 2001 y tiene un problema que la puerta trasera aveces no abre; es electrica ¿que podria ser? pudes hacer un video ya que esa falla es muy comun
First I would look up on All data how the locks worked. Is it mechanical or run by the ECM or similar modual. Once I knew HOW the locks were suppose to work then I could think through deviations to proper operation.
I ain't gonna say what I think it might be cause I don't have enough information on how the system works. I would be curious as to whether there are any speedometer problems along with this given what little info was on this video. The big thing I'm wantin on this is a circuit description and operation from a service information site, such as AllData. Read it, understand it, and develop a diagnostic plan based on the info it gave.
The first thing I would do would be to hit up alldata for a system operation description and any TSB's. Next, I would probably follow along with epiphaknee's diagnostic train of thought.
If I didn't know any better, seems like you being punked. Someone is following you around with the remote control lmao. Nahh just kidding. I also will go with epiphaknee's response.
Stop and think about how stupid this is! It's a problem with the freakin' electronic door locks. Damn computer. It's so complicated you need an oscilloscope to fix the damn door locks! I'm disgusted with the s-i-t-u-a-t-i-o-n.
Problem: Short to power ( feedback ) somewhere in the door lock wiring coming out of the BCM.
Diagnosis: Look at wiring diagram and check for available voltages where it should be, then voltage drop all components in circuit, take all panels off and visually inspect that all locks have no corrosion and bad wires or grounds.
I like the response by epiphaknee. First step is a wiring diagram, and a quick review of the vehicle looking for other clues. That circuit to lock the doors should be suppressed after the first lock, so the fact it continues says that a feedback loop has lost it's way. Likely culprit is bad ground at body control module or a bad connection or worn wire.
I don't think the locks are supposed to unlock when the vehicle speed drops below 15 mph. I think they are supposed to unlock when shifted back into park. Maybe a faulty PRNDL switch or related circuitry. Any codes?
I think there is a loose connection in the input circuit to the BCM for the locks that indicates the sliding door is closed. The door is not closing all the way and when you accelerate or turn corners it is losing its contact. A likely problem spot would be where the sliding doors make electrical contact with the B-Pilar. Could be corroded.
I would disable the automatic lock feature and repeat the road test. During the road test I would observe scan tool data for BCM and RKE status' hopefully showing an input change
I had the same problem what I did was that there is a sensor by the latch on the drivers side. I disconnected the wires from it and that solved my problem. Of course now the dome lights do activate when the door is opened nor does the automatic door lock feature work.
Start with the diagram and trace back eliminating potential causes, speed sensor, steer column switch for park-drive, or wiring short near door hinge. I really doubt it is a faulty computer. My guess (and it is just a guess without evidence) is a wiring short near door hinge.
Door locks are controlled by the BCM. Check the inputs to the module to see which one is faulty. Door lock switches, door ajar switches / possible door alignment triggering the ajar switch, etc. If they check out then look at BCM door lock output. If it's not commanding the locks then it's a short in the circuit (or a bad relay). If it's the BCM who is actually commanding the locks then it may be a bad BCM or faulty ground. They key is if anything else is flaky like dome lights, etc.
2.- Raise the vehicle's front wheels, connect a scope to the VSS signal output and observe for any glitches or interruptions in the wave pattern as the wheels spin during the test.
Problem: The Body Control Module is either malfunctioning or is not receiving correct information due to: (i) weak battery or connections, (ii) Loose or corroded grounds or other connections, (iii) bad BCM, (iv) bad relay, or, (iv) faulty or misaligned door latches or alignment. Known pattern failure. Process: Inspect all latches and door alignment, then use Power Probe and work towards the BCM. Thanks for these videos Duane they Rock!!
Review the wiring diagram first and work the circuit backwards to determine where the power is coming from. Obviously there is some kind of speed sensor and possibly a tie in with a module or computer. Finding out if these device have good supply voltage is one thing to look for too before condemning any of these devices, afterall it could just be a bad connection to one or more of these.
Doors locks typically unlock when the shift lever is placed into the Park position. I suspect the switch/contacts that unlocks when in Park is the problem.
I think it's the vehicle speed sensor.The sensor tells the door locks when to engage and they are controlled by a relay.It could be a bad relay but I think that it's a bad vehicle speed sensor.
I would ask customer when problem started & was anything done/repaired on vehicle before this problem happened.I would check for BCM codes.Hook up scan tool & see if vehicle speed is consistant with speedometer.Check LF door ajar switch.Check door lock grounds.Find BCM & tap on it with screwdriver while sitting & while driving.Wiggle wires on BCM & door lock ajar switches.My guess is door ajar issue like DAQUAN88 said or bad VSS that cluster is not picking up
I would go get the wiring diagram's first period (door lock's and engine performance for vss). Look it over to see exactly how the system work's. Also i would put my modis on the vehicle and go to bidirectional testing and see if i could controll them like that. My guess would be a bad door pin switch or loose connector to it tho.
to me it sounds like a mechanical issue triggering the door lock/unlock button, perhaps if the lock/unlock button is a one button rocker switch and the spring that holds it in center position broke, then the button would be free to rock whereever it wants to, and acceleration and deceleration/turning would cause it to move, thus causing the switch to hit either the lock or unlock position by itself.
Wow, first I would have to find out how the door locks are controlled. No1 Is there a door lock computer fitted to this vehicle? No 2 If so from what device does this computer have the vehicle speed inputted from? No 3 Is this device giving correct output as per vehicle specs? No 4 If YES replace door lock computer, if NO replace speed sensor device.
this problem is normal in vehicules whith vacum door swish? or this can happens in the regular electric swishes??
1986WILLSON 3 weeks ago in playlist Más vídeos de realfixesrealfast
como funciona todo el circuito de las puertas electricas de la voyager
rascafierros 2 months ago
hola , compre una minivans toun country 2001 y tiene un problema que la puerta trasera aveces no abre; es electrica ¿que podria ser? pudes hacer un video ya que esa falla es muy comun
rascafierros 2 months ago
Shorted wire or faulty switch
zloben9000 3 months ago
DUANE READE
hp11208 4 months ago
First I would look up on All data how the locks worked. Is it mechanical or run by the ECM or similar modual. Once I knew HOW the locks were suppose to work then I could think through deviations to proper operation.
watcbd 4 months ago
Loose wire for auto door lock activation from speed sensor. Check for loose wire at speed sensor harness or at master door lock control.
CHS191 4 months ago
Some kind of computer issue, or maybe wires going bad? Couldn't say how to fix it.
blinkskaterkc 4 months ago
Im guessing computer glitch.speedometer error
Shalicody 4 months ago
I will try to reset the body control module. Also read on the scanner what speed is when bcm locks and unlocks.
Avinash1943 5 months ago
I ain't gonna say what I think it might be cause I don't have enough information on how the system works. I would be curious as to whether there are any speedometer problems along with this given what little info was on this video. The big thing I'm wantin on this is a circuit description and operation from a service information site, such as AllData. Read it, understand it, and develop a diagnostic plan based on the info it gave.
dmorley100 5 months ago
my guess is a short. on the the next video
solman182 5 months ago
The first thing I would do would be to hit up alldata for a system operation description and any TSB's. Next, I would probably follow along with epiphaknee's diagnostic train of thought.
beefystik 5 months ago
If I didn't know any better, seems like you being punked. Someone is following you around with the remote control lmao. Nahh just kidding. I also will go with epiphaknee's response.
Michiganborn1969 5 months ago
id suspect faulty wiring. id test using a a power probe
380gb 5 months ago in playlist More videos from realfixesrealfast
its a dodge..
wangbungal 5 months ago 7
id suspect the bcm then id go to identifix and see if anyone else had the simalar problem and see if theres any short cuts to diagnosing it
jdubb408 5 months ago
Stop and think about how stupid this is! It's a problem with the freakin' electronic door locks. Damn computer. It's so complicated you need an oscilloscope to fix the damn door locks! I'm disgusted with the s-i-t-u-a-t-i-o-n.
CoolasIce2 5 months ago
Problem: Short to power ( feedback ) somewhere in the door lock wiring coming out of the BCM.
Diagnosis: Look at wiring diagram and check for available voltages where it should be, then voltage drop all components in circuit, take all panels off and visually inspect that all locks have no corrosion and bad wires or grounds.
StratusCams 5 months ago
I like the response by epiphaknee. First step is a wiring diagram, and a quick review of the vehicle looking for other clues. That circuit to lock the doors should be suppressed after the first lock, so the fact it continues says that a feedback loop has lost it's way. Likely culprit is bad ground at body control module or a bad connection or worn wire.
spelunkerd 5 months ago
I'd say the VSS or related wiring.
I would start by following a wiring diagram.
TRcustomengineering 5 months ago
I don't think the locks are supposed to unlock when the vehicle speed drops below 15 mph. I think they are supposed to unlock when shifted back into park. Maybe a faulty PRNDL switch or related circuitry. Any codes?
Ilikeryche 5 months ago
I think there is a loose connection in the input circuit to the BCM for the locks that indicates the sliding door is closed. The door is not closing all the way and when you accelerate or turn corners it is losing its contact. A likely problem spot would be where the sliding doors make electrical contact with the B-Pilar. Could be corroded.
ddummerjr 5 months ago
I would disable the automatic lock feature and repeat the road test. During the road test I would observe scan tool data for BCM and RKE status' hopefully showing an input change
jbnoj 5 months ago
bad relay,power supply or faulty ecm
SUPERMAN6219 5 months ago
1. Door lock control module.
2. Wiring Diagram
dadefope80 5 months ago
Body control module. A friend had a Olds 88 with kind of the same problems.
blackericdenice 5 months ago
I had the same problem what I did was that there is a sensor by the latch on the drivers side. I disconnected the wires from it and that solved my problem. Of course now the dome lights do activate when the door is opened nor does the automatic door lock feature work.
boodoorn 5 months ago
Start with the diagram and trace back eliminating potential causes, speed sensor, steer column switch for park-drive, or wiring short near door hinge. I really doubt it is a faulty computer. My guess (and it is just a guess without evidence) is a wiring short near door hinge.
knunne1 5 months ago
Door locks are controlled by the BCM. Check the inputs to the module to see which one is faulty. Door lock switches, door ajar switches / possible door alignment triggering the ajar switch, etc. If they check out then look at BCM door lock output. If it's not commanding the locks then it's a short in the circuit (or a bad relay). If it's the BCM who is actually commanding the locks then it may be a bad BCM or faulty ground. They key is if anything else is flaky like dome lights, etc.
JohnzCarz 5 months ago
1. Vehicle speed sensor
2.- Raise the vehicle's front wheels, connect a scope to the VSS signal output and observe for any glitches or interruptions in the wave pattern as the wheels spin during the test.
Just a guess, thanks again Duane.
ManicMechanic007 5 months ago
Problem: The Body Control Module is either malfunctioning or is not receiving correct information due to: (i) weak battery or connections, (ii) Loose or corroded grounds or other connections, (iii) bad BCM, (iv) bad relay, or, (iv) faulty or misaligned door latches or alignment. Known pattern failure. Process: Inspect all latches and door alignment, then use Power Probe and work towards the BCM. Thanks for these videos Duane they Rock!!
epiphaknee 5 months ago 5
Review the wiring diagram first and work the circuit backwards to determine where the power is coming from. Obviously there is some kind of speed sensor and possibly a tie in with a module or computer. Finding out if these device have good supply voltage is one thing to look for too before condemning any of these devices, afterall it could just be a bad connection to one or more of these.
mine1username 5 months ago
Doors locks typically unlock when the shift lever is placed into the Park position. I suspect the switch/contacts that unlocks when in Park is the problem.
walter636 5 months ago
I think it's the vehicle speed sensor.The sensor tells the door locks when to engage and they are controlled by a relay.It could be a bad relay but I think that it's a bad vehicle speed sensor.
tinydx95t2 5 months ago
I would ask customer when problem started & was anything done/repaired on vehicle before this problem happened.I would check for BCM codes.Hook up scan tool & see if vehicle speed is consistant with speedometer.Check LF door ajar switch.Check door lock grounds.Find BCM & tap on it with screwdriver while sitting & while driving.Wiggle wires on BCM & door lock ajar switches.My guess is door ajar issue like DAQUAN88 said or bad VSS that cluster is not picking up
94vettelover2 5 months ago
I feel it's something dirty like contact points or something becoming faulty like an actuator or sensor. It's an electrical issue.
C32used 5 months ago
I would go get the wiring diagram's first period (door lock's and engine performance for vss). Look it over to see exactly how the system work's. Also i would put my modis on the vehicle and go to bidirectional testing and see if i could controll them like that. My guess would be a bad door pin switch or loose connector to it tho.
DAQUAN88 5 months ago
to me it sounds like a mechanical issue triggering the door lock/unlock button, perhaps if the lock/unlock button is a one button rocker switch and the spring that holds it in center position broke, then the button would be free to rock whereever it wants to, and acceleration and deceleration/turning would cause it to move, thus causing the switch to hit either the lock or unlock position by itself.
Amopower 5 months ago
Wow, first I would have to find out how the door locks are controlled. No1 Is there a door lock computer fitted to this vehicle? No 2 If so from what device does this computer have the vehicle speed inputted from? No 3 Is this device giving correct output as per vehicle specs? No 4 If YES replace door lock computer, if NO replace speed sensor device.
precopster1 5 months ago