Question about 2005 Dodge Caravan
All power lock switches not working,does not appear to be isolated to one switch,possible fuse problem? can't find fuse for power locks,is there even one?
I did the thing pulling the 20am IOD fuse out and it seemed to work great! I was going to go back to the dealership.... stupidness....
My dad is a mechanic and he said that the fuse may just have to be replaced.
Posted on Sep 01, 2008
The solution is simple, take your vehicle to a dealer and have your body control module reprogrammed. You do not need to replace the controller. I have performed this repair numerous times. I don't know what other dealers charge but i usually charge a one hour labor charge. Price will vary depending on labor rates. I've never had one come back for the same problem after performing the flash.
Posted on Sep 27, 2008
Hi, The overall problem is with the Body Control Module (BCM). The dealer may offer to re-flash it as it's a software problem. BUt you need the BCM replaced. The cost ranges depending upon your dealer butif you are out of warrantly and the cost is over $150 - $175 USD, call Chrysler 1-800-992-1997 and tell them your ordeal. Chrysler will ask the dealer to send them your BCM so they can program your milage into the module and then return it to you. Then ask the Chrysler rep (Or dodge person) to reduce the cost as this is their software issue, and it was bad from the start. This will Work!!!
Posted on Aug 11, 2008
Try to reset on board computer....... remove the battery cable (negative). let it unhook for awhile or one hour.
Install again the cable, test your power lock.
THis should work fine.
Posted on Aug 10, 2008
I did it 4 time in last two month pulling out 20 amp IDO fuse and don't know how many time I have to keep doing it in future. Is there a permanent solution for this? Will it corrupt the program set in the car or damage other system?
Posted on Aug 06, 2008
Go under the hood, into the fuse box, pull the 20amp IDO fuse for 20 seconds, plug it back in and it should be fine. Or, take it the dealer and pay them $100+ to basically do the same thing. No guarantees how long it will last (weeks, months?) but it will get you through and it's free. It may be triggered by a power lock actuator going out, but I'm not sure. I'm still trying to figure this out on my own 05 GC. Hope this helps and saves you a trip to the dealer.
Posted on May 27, 2008
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Posted on Jan 02, 2017
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Nov 26, 2017 | Saturn Cars & Trucks
DOOR LKS fuse
Driver door lock actuator
Driver door lock switch
GMLAN serial data link
Keyless entry transmitter
Passenger door lock actuator
Passenger door lock switch
Remote control door lock receiver (RCDLR)
The DR LCK fuse supplies battery voltage to the body control module (BCM) for the power door lock system. The BCM supplies and monitors a reference voltage to the driver and passenger door lock switches through the door lock switch lock/unlock signal circuit. Each door lock switch receives ground at G300 which is also the ground for the door lock and unlock relays located in the BCM. When a door lock switch is placed in the lock position, the reference voltage is switched to ground and the BCM senses 0.0 volts on the door lock/unlock signal circuit. When a door lock switch is placed in the unlock position, the reference voltage is switched to ground through a 1.5k ohm resistor that is internal to each of the door lock switches and the BCM senses approximately 2.9 volts on the door lock/unlock signal circuit. The BCM interprets what position the activated door lock switch was placed in based on the voltage drop.
The BCM, upon receipt of a lock or unlock switch signal, will switch the appropriate door lock/unlock relay coil control circuit to ground causing the appropriate door lock/unlock relay to energize. With the relay energized, voltage is applied to the door lock actuator control circuit causing the door to either lock, or unlock depending on what command was received from the power door lock switch or remote control door lock receiver (RCDLR). When a power door lock/unlock relay is not energized, the switch contacts are normally grounded through the BCM which provides ground to the appropriate door lock actuator for the lock/unlock function being performed. The power door lock/unlock functions are performed by reversing the flow of voltage through the door lock actuator control circuits. The BCM has three internal drivers for the power door lock system. 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 separately from the passenger door. For additional information concerning keyless entry, refer to Keyless Entry System Description and Operation.
This is one you may want to take to dealer or some other ASE certified repair shop ! To do this right you need a Tech 2 scan tool !
Ignition ON, observe the scan tool Door Lock Switch parameter while using the driver and passenger door lock switches. The parameter should change from Idle to Lock and Unlock.
If the value does not change, refer to Door Lock Switch Malfunction.
Command the doors to LOCK and UNLOCK with the scan tool, the door lock actuators should LOCK and UNLOCK when changing between the commanded states.
If one or more doors do not LOCK or UNLOCK, refer to Door Lock Malfunction.
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