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2005 Malibu Maxx. 1. Reverse lights won't stay on. They flicker or won't come on at all. 2. AC only works on 3. 4. The car locks and unlocks constantly when the car is in park.

Do you know how these thing's work ? How to do automotive electrical testing using a DVOM - digital volt ohm meter ? How to look up wiring diagrams to see what is involved in the working's of these systems ?

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Backup Lamps
The R-BEC 1 fuse in the underhood fuse block supplies battery positive voltage to the BACKUP LAMP relay through the BACKUP LAMP fuse. When the gear selector is placed in reverse, the body control module (BCM) supplies ground to the BACKUP LAMP relay. This energizes the BACKUP LAMP relay and current flows from the BACKUP LAMP relay to the backup lamps and then to ground. The backup lamps are grounded at G401 and G403.

The transmission range (TR) switch is part of the park/neutral position (PNP) and back-up lamp switch assembly (1), which is externally mounted on the transmission manual shaft. The TR switch contains four internal switches that indicate the transmission gear range selector lever position. The PCM supplies ignition voltage to each switch circuit. By grounding one or more of the switch circuits, the PCM detects the selected gear range by the state change of the switch input. Refer to Transmission Range Switch Logic . Switch input to the PCM is represented on the scan tool as HI and LOW. HI indicates an ignition voltage signal. LOW indicates a zero voltage signal. The four parameters represent transmission range switch signal A,B,C and Parity.

When the transmission is placed into reverse a input to the engine computer is received . The PCM - engine computer sends a massage on the C.A.N serial data network to the BCM - body control module . Which then energizes the back up lamps relay .

Same with the Door locks , controlled by the BCM .

Door Lock System Components
The Power Door Lock System consists of the following components:
• Body control module (BCM)
• Driver door lock switch
• Front passenger door lock switch
• Door lock actuators in each of the doors
• IBCM (PWR) 15-amp fuse
Door Lock System Controls
The Power Door Lock System is controlled by the body control module (BCM) and can be activated by any one of the following:
• A door lock switch Lock or Unlock actuation
• A keyless entry transmitter actuation
• An automatic door lock actuation
• An automatic door unlock actuation
• A last door closed locking (LDCL) actuation

A/C only works on 3,4 . we assume you mean the blower motor only works on med speed an high speed . This would be for the heat as well . Manual or automatic cilmate control ? The blower motor control module is probably at fault !

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Door Locks Go Crazy 1 The BCM is receiving false input's for bad door sensor or switch .

Mar 31, 2017 | 2005 Chevrolet Malibu Maxx

1 Answer

Does it have a generator fuse?

Have you checked the power regulator? Free at AutoZone

Chevrolet Malibu Maxx Questions - dead battery new ... > Questions > Chevrolet > Malibu Maxx

CarGurusdead battery new alternator - I have a new alternator in my car. brand new. ... Asked by chevyyoungster07 Jun 02, 2015 at 10:06 PM about the 2005 Chevrolet MalibuMaxx 4 Dr LS ... If it still does it with the battery charged have alternator checked again. ... If not charging check for blown alternator fuse before you blame it on ...

[PDF]2009 Chevrolet Malibu Owner Manual ChevroletFuel Gage. + : Fuses i : Headlamp High/Low-Beam Changer j : LATCH System Child Restraints .... If the vehicle has a manual seat, it can be moved forward or ...

GM News and Recalls ' Page 2 - Consumer Affairs
General Motors is recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007... Yet another recall and another reason for some joe-smo to get in and mess ...... clips attaching the generator fuse block to the vehicle body can become loose and .... Buick LaCrosse and Regal, and Chevrolet Malibu vehicles recalled.

Jan 05, 2016 | 2005 Chevrolet Malibu

2 Answers

3.5l V6 Auto. Why is there no power at the fuel pump?

Just answered a similar question. Does it turn over? Either way, I would look for blown fuse and then check (usually) under the hood for a relay. You can some times test by taking another relay for lights or something not needed to run and switch them IF THEY ARE EXACTLY the same. If the pu,p works you will know.

Oct 20, 2015 | Cars & Trucks

1 Answer

Where is the IBCM module located

Should be the air control doors moving.

Nov 18, 2013 | 2006 Chevrolet Malibu LT

1 Answer

2006 Malibu maxx, which fuse controls the cruise control?

The underhood fuse block contains 30A IBCM (R/C) fuse 21 and 50A IBCM2 fuse 25. The body control module (BCM) contains the 2A RUN/CRANK fuse and the 10A interior lights fuse. All four of these fuses affect the cruise control.

Sep 13, 2012 | Cars & Trucks

1 Answer

2004 chevy malibu ignition switch

How would you like it if you replaced the switch an that wasn't the problem ? That is very possible without knowing for sure if that is the problem . Testing the electrical supply to the switch an out of the switch is the proper way to diagnose this problem. Plus the ignition switch is just a input to the BCM - body control module . The BCM is really in charge of what mode to put the vehicle in . Your best bet , take it to a qualified repair shop .

The body control module (BCM) has a bussed electrical center integrated into the housing. Body control relays and fuses are installed directly on the BCM, which simplifies wiring and junction blocks on the vehicle. The body control system consists of the BCM and its associated controls. Battery positive voltage is provided to the BCM from IBCM BATT 1 fuse and the IBCM BATT 2 fuse in the underhood fuse block. The module grounds are wired to ground G201, G203 and G305. The BCM is wired to the GMLAN High speed serial data buss, and the GMLAN Low speed serial data buss, as well as discrete input and output terminals to control the functions of the vehicle's body .
Serial Data Gateway
The body control module (BCM) in this vehicle functions as a translator between the High and Low speed GMLAN busses. The 2 communication protocols use the BCM to translate communicated serial data messages between the control modules over the 2 serial data busses.

Normal vehicle serial data communications and the control modules operations will not begin until the system power mode has been identified. Discrete wires from the ignition switch contacts are monitored by a module which acts as the power mode master (PMM) in order to determine the correct power mode. The module which is the PMM communicates the system power mode to all modules on the serial data lines. Refer to Body Control System Description and Operation to identify which module is the PMM and the applicable power mode look up table.

The one that said you may need an ignition switch has no clue as to what's up !
Install a scan tool.
Turn OFF the ignition.
With a scan tool, under Vehicle Control Systems, Computer/Integrating Systems, BCM Data menu observe the Power Mode parameter.
Does the displayed power mode parameter match the actual ignition switch position?
Go to Step 2
Go to Step 6
Turn the ignition switch to the UNLOCK position.
With a scan tool, under Vehicle Control Systems, Computer/Integrating Systems, BCM Data menu observe the Power Mode parameter.
Does the displayed power mode parameter match the actual ignition switch position?

May 30, 2017 | Cars & Trucks

3 Answers

I just need to get a fuse panel diagram for a 2005 chevy malibu ls. i need the one for the one that is on the passanger side floor thanks

GM says there are 3 fuse blocks in your car. Diagrams are in the manual here:

Start on page 5-85 and flip through to the diagram you need.

May 03, 2009 | 2005 Chevrolet Malibu

1 Answer

Is there a replacemnet radio for 2005 malibu with

give these guys a try and maybe they can help you its and 1-800-292-1032 Schram auto parts they deal with GM parts only

Apr 26, 2009 | 2005 Chevrolet Malibu

1 Answer

IBCM current draw

Try taking out the radio fuse as it could be the radio memory which has a constant supply of low amp power so you dont lose station settings

Dec 02, 2008 | 2006 Pontiac G6

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