Question about 2004 Dodge Caravan

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Courtesy lights stay on all the time even when car is off

I have a 2004 grand caravan that the courtesy lights wont shut off when the car is on or off only way is to pull the BCM fuse out tried disconnecting the neg terminal on battery and removing the IOD fuse but that doesnt help

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Remove the IOD and leave it out overnight or at list an hour this will reset the BCM.

Posted on Oct 09, 2011

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Im not to good electrical but i would say you have a bare wire touching metal or something. maybe a wiring glicth.

Posted on Apr 24, 2009

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I have a 2004 Silverado and when I open the passage door none of the inside lights come on but the drivers side does please help


The left and right front door courtesy lamps are controlled, and receive voltage and ground from the drivers door module (DDM) and the passenger door module (PDM) respectively. The body control module (BCM), DDM, and the PDM communicate through class II serial data for the lamp illumination commands and the door ajar switches.
The remaining courtesy lamps are controlled and receive voltage from the BCM. Voltage for the courtesy lamp supply voltage circuit and the backup lamp supply voltage circuit is from the TBC B fuse in the instrument panel fuse block directly through the BCM to these circuits. A short to ground on either of these circuits will open the fuse. Ground is provided to the footwell lamps and all courtesy/reading lamps at G203. Ground is provided to the right middle and right rear door at G306. Ground is provided to the left middle and left rear door at G302.
There could be a DTC - diagnostic trouble code stored in the BCM
DTC B2615
The body control module (BCM) receives a ground signal from the door jamb, liftglass/liftgate if equipped, or courtesy lamp switches requesting courtesy/dome lamp illumination. When this occurs, the BCM directly sends a voltage through the courtesy lamp supply voltage circuit illuminating the courtesy/dome lamps.
Voltage for the courtesy lamp supply voltage circuit as well as the backup lamp supply voltage circuit is from the left instrument panel fuse block TBC 2B 15-amp fuse directly through the BCM to these circuits
DTC B3801
The body control module (BCM) monitors the courtesy lamp switch signal circuit in order to determine when the courtesy/dome lamps should be illuminated. When the BCM senses that the courtesy lamp switch signal circuit is grounded when the switch is activated, the BCM will illuminate the courtesy/dome lamps.
Inspect the following related body control module (BCM), driver door module (DDM), and passenger door module (PDM) data parameters. Refer to Scan Tool Data List or Scan Tool Data Definitions for typical values and definitions:
?€¢
The courtesy lamp switch


?€¢
The interior lamp defeat switch


?€¢
The door ajar switches

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Oct 20, 2015 | Cars & Trucks

2 Answers

Interior lights not working


You mite have a DTC - diagnostic trouble code stored in the BCM - body control module , The BCM controls the interior lights ! Have you heard of a BCM ?
DTC B2615
The body control module (BCM) receives a ground signal from the door jamb, liftglass/liftgate, or courtesy lamp switches requesting courtesy/dome lamp illumination. When this occurs, the BCM directly sends a voltage through the courtesy lamp supply voltage circuit illuminating the courtesy/dome lamps.
Conditions for Setting the DTC
?€¢
When the BCM receives a courtesy lamp illumination request signal and the courtesy lamp supply voltage circuit is shorted to ground.

?€¢
When the BCM is not receiving a courtesy lamp illumination request signal and the courtesy lamp supply voltage circuit is shorted to voltage or open only to the first splice from the BCM.

?€¢
There is a loss of the rear fuse block TBC 3 battery supply voltage to the BCM for more than 1 second

Diagnostic Aids
?€¢
Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

?€¢
Only an open circuit up to the first splice from the BCM will set DTC B2615.

DTC B3801
The body control module (BCM) monitors the courtesy lamp switch signal circuit in order to determine when the courtesy/dome lamps should be illuminated. When the BCM senses that the courtesy lamp switch signal circuit is grounded when the switch is activated, the BCM will directly illuminate the courtesy/dome lamps. Do you know what a scan tool is ? not a code reader !
Courtesy Lamps Inoperative




GM Tech 2 Training video 1996

Aug 24, 2015 | 2004 Chevrolet Chevrolet TrailBlazer EXT

1 Answer

2004 yukon slt courtesy light relay location


Here is a description of the courtesy lights , there is no relay ! Controlled by the BCM - body control module !
The courtesy/illuminated entry lamps, may be manually turned on or off by placing the interior lamp switch in the ON or OFF position. If an outside door handle is lifted or a door is opened, the courtesy/illuminated entry lamps illuminate. After all the doors have been closed the courtesy/illuminated entry lamps will remain illuminated approximately 15 seconds. The courtesy/illuminated entry lamps will also turn on prior to any door being opened, and remain illuminated approximately 40 seconds when the driver removes the ignition key. When the driver places the dome lamp defeat switch in the OFF position, the courtesy/illuminated entry lamps will be disabled.
The left and right front door courtesy lamps are controlled, and receive voltage and ground from the drivers door module (DDM) and the passenger door module (PDM) respectively. The body control module (BCM), DDM, and the PDM communicate through class 2 serial data for the lamp illumination commands and the door ajar switches.
The remaining courtesy lamps are controlled and receive voltage from the BCM. Voltage for the courtesy lamp supply voltage circuit and the backup lamp supply voltage circuit is from the TBC B fuse in the instrument panel fuse block directly through the BCM to these circuits. A short to ground on either of these circuits will open the fuse. Ground is provided to the footwell lamps and all courtesy/reading lamps at G203. Ground is provided to the right middle and right rear door at G306. Ground is provided to the left middle and left rear door at G302.

Mar 17, 2015 | Cars & Trucks

1 Answer

All interior dome light are out on 2004 quest, fuse checked are good


The interior light are controlled by the Body Control Module (BCM).
Check the fuse for the BCM. If the fuse is OK, then try to disconnect the car battery for about 10 minutes to reset the BCM. If resetting the BCM doesn't work you may have to replaced it.

Jun 23, 2011 | 2004 Nissan Quest

1 Answer

My 2004 Dodge Grand Caravan: The courtesy dome lights don't light properly, only very dim. I have not been able to identify what the cause is. Other interior lights work properly.


Remove the IOD fuse and leave out overnight this will reset the BCM and probably resolve the diming light and the dome light issue, I had the same prob in my 2006 Grand Caravan.
Good Lock

Feb 10, 2011 | 2004 Dodge Caravan

2 Answers

I am replacing the body control computer. where is it?


HI, the BCM in your Caravan is behind the junction block or what most people referee to as the fuse box under the drivers side dash. Happy motoring

Aug 27, 2010 | 1998 Dodge Grand Caravan

1 Answer

I have a 2004 dodge grand caravan that keeps losing its charge. I had the alternator checked and Checkers said there was an electrical draw when everything was turned off. Has anyone ran across this...


its called parasitic draw, pull the ecm fuse, dixconnect the neg. batt cable and bridge it with a test light, pull one fuse at a time when the light goes off youwill know wich circuit is drawing,

Oct 27, 2009 | 2004 Dodge Grand Caravan

1 Answer

1999 caravan under dash relay clicking


You may want to try pulling connections off BCM (body control module) and cleaning them with contact spray cleaner or similar & re-installing. Sometimes you'll get lucky & this will cure it, without replacing BCM.70846a5.gif

Oct 01, 2009 | 1999 Dodge Grand Caravan

1 Answer

Radio CD not working & lights don't flash remote keylock


Sometime the computer in car will shut down a circuit when it sees a problem even if it only occure once. You can try to disconnect the battery for at least 2 min so all sys power off (some have capacitors that mantaine a charge for short time). If a battery disconnect does not clear problem you have go to dealer and have them to clear codes and reset you modules and your preferences

Feb 15, 2009 | 2004 Dodge Caravan

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