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How does WHAT operate. Please give some details.

Posted on Jan 12, 2013

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Posted on Jan 02, 2017

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I had my passenger headlight bulb replaced. Now when I go to start my 2009 buick lacrosse, my horn honks, wipers come on, trunk pops open and loud bass static on my radio.


Who replaced the headlamp bulb ? Take it back . Everything your having problems with are all controlled by the BCM - body control module . May have crossed wire's ,shorted etc....
This vehicles BCM functions as the Power Mode Master (PMM). Refer to Power Mode Description and Operation for a complete description of the power mode functions.
Body Control Module
The various body control module (BCM) input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The BCM functions include the following:
• Battery rundown protection--Inadvertent power--Refer to Interior Lighting Systems Description and Operation .
• BTSI/automatic transmission shift lock control--Refer to Automatic Transmission Shift Lock Control Description and Operation .
• Bulb check--Refer to Instrument Cluster Description and Operation .
• Chimes--Refer to Audible Warnings Description and Operation .
- Check gages
- Content theft deterrent
- Door ajar warning
- Headlamps ON
- Key-in-ignition
- Oil reset
- Park brake warning
- Seat belt not fastened
- Turn signal ON
- Vehicle theft deterrent
• Door lock interface--Refer to Power Door Locks Description and Operation .
• Exterior and interior lighting control--Refer to Exterior Lighting Systems Description and Operation .
- Automatic lighting control
- Backup lamps
- Daytime running lights (DRL)
- Fog lamps
- High/low beam head lamps
- Park brake lights
- Turn hazard lamps
• Gage control--Refer to Instrument Cluster Description and Operation .
• Heated seats--Refer to Heated Seats Description and Operation .
• Horn interface--Refer to Horns System Description and Operation .
• Instrument cluster indicator control--Refer to Instrument Cluster Description and Operation .
• Interior lighting--Refer to Interior Lighting Systems Description and Operation .
• Key-in-ignition sensing--Refer to Audible Warnings Description and Operation .
• Parking brake state sensing--Refer to Brake Warning System Description and Operation .
• Retained accessory power (RAP)--Refer to Retained Accessory Power (RAP) Description and Operation .
• Rear compartment interface--Refer to Power Door Locks Description and Operation .
• Rear defogger--Refer to Rear Window Defogger Description and Operation .
• Remote function control--Refer to Keyless Entry System Description and Operation .
• RFA communication link--Refer to Keyless Entry System Description and Operation .
• Seat belt use sensing--Refer to Seat Belt System Description and Operation .
• Theft deterrent vehicle/content--Refer to Content Theft Deterrent (CTD) Description and Operation or Immobilizer Description and Operation .
• Washer solvent level sensing--Refer to Wiper/Washer System Description and Operation .
• Wiper/washer--Refer to Wiper/Washer System Description and Operation .

May 07, 2018 | Buick Cars & Trucks

1 Answer

I have a 2005 Buick Terraza. When I put in gear and drive it starts dinging and indicates that a side door is not closed. They are and I have cleaned the contact plate.


This warning indicator is controlled by the BCM - body control module . You cant turn it off , you need to fix the faulty input switch that signals the BCM that the door is open .
Body Control Module
The various body control module (BCM) input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The BCM functions include the following:
• Battery rundown protection--Inadvertent power--Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• BTSI/automatic transmission shift lock control--Refer to Automatic Transmission Shift Lock Control Description and Operation in Automatic Transaxle - 4T65-E.
• Bulb check--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Chimes--Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
- Check gages
- Content theft deterrent
- Door ajar warning
- Headlamps ON
- Key-in-ignition
- Oil reset
- Park brake warning
- Seat belt not fastened
- Turn signal ON
- Vehicle theft deterrent
• Door lock interface--Refer to Power Door Locks Description and Operation in Doors.
• Exterior and interior lighting control--Refer to Exterior Lighting Systems Description and Operation in Lighting Systems.
- Automatic lighting control
- Backup lamps
- Daytime running lights (DRL)
- Fog lamps
- High/low beam head lamps
- Park brake lights
- Turn hazard lamps
• Gage control--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Heated seats--Refer to Heated Seats Description and Operation in Seats.
• Horn interface--Refer to Horns System Description and Operation in Horns.
• Instrument cluster indicator control--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Interior lighting--Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• Key-in-ignition sensing--Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
• Parking brake state sensing--Refer to Brake Warning System Description and Operation in Hydraulic Brakes.
• Retained accessory power (RAP)--Refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power.
• Rear compartment interface--Refer to Power Door Locks Description and Operation in Doors.
• Rear defogger--Refer to Rear Window Defogger Description and Operation in Stationary Windows.
• Remote function control--Refer to Keyless Entry System Description and Operation in Keyless Entry.
• RFA communication link--Refer to Keyless Entry System Description and Operation in Keyless Entry.
• Seat belt use sensing--Refer to Seat Belt System Description and Operation in Seat Belts.
• Theft deterrent vehicle/content--Refer to Theft Systems Description and Operation in Theft Deterrent.
• Washer solvent level sensing--Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.
• Wiper/washer--Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.

As far as the sliding doors , pull the fuse's

Jan 12, 2018 | Buick Cars & Trucks

1 Answer

My 2004 Pontiac grand am se1 acts like door is open and interior light stays on also does t lock on its own when in gear and lights don't blink and horn not honk when locking with key bob


Door ajar switch problem more then likely or wiring issue . The BCM - body control module won't turn off interior light , let door lock because it think's the door is open . The door ajar switch is a input to the BCM .

The first thing would be to have it checked for DTC'S - diagnostic trouble codes . Also check with an enhanced scan tool to see if the BCM shows ajar switch data (open or closed ? Do you know about body electronics ?
Body Control Module
The various BCM input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The Body Control Module functions include the following:
?€¢
A/C compressor request. Refer to Air Temperature Description and Operation


?€¢
Remote Function Control. Refer to Keyless Entry System Description and Operation


?€¢
A/C cooling Fan. Refer to Air Delivery Description and Operation


?€¢
Audio Delay Power. Refer to Radio/Audio System Description and Operation


?€¢
Exterior and interior lighting control. Refer to Exterior Lighting Systems Description and Operation


-
Daytime running lights (DRL)


-
Automatic lighting control


-
Fog lamps


?€¢
Interior lighting. Refer to Interior Lighting Systems Description and Operation


?€¢
Battery rundown protection (Inadvertent Power). Refer to Interior Lighting Systems Description and Operation


?€¢
Chimes. Refer to Audible Warnings Description and Operation


-
Key-In-Ignition


-
Head Lamps On


-
Seat Belt Not Fastened


-
Turn Signal On


-
Park Brake Warning


-
Door Ajar Warning


-
Check gages


?€¢
Gage control. Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.


?€¢
Instrument cluster indicator control. Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.


?€¢
Theft deterrent. Refer to Theft Systems Description and Operation .


?€¢
Engine coolant level sensing. Refer to Cooling System Description and Operation .


?€¢
Washer solvent level sensing. Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.


?€¢
Key-in-ignition sensing. Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.


?€¢
Seat belt use sensing. Refer to Seat Belt System Description and Operation .


?€¢
Brake fluid level sensing.


?€¢
Parking brake state sensing.


?€¢
Rear compartment interface. Refer to Power Door Locks Description and Operation


?€¢
Horn interface.


?€¢
Door lock interface. Refer to Power Door Locks Description and Operation


?€¢
Bulb Check. Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.

Oct 24, 2016 | 2004 Pontiac Grand Am

1 Answer

2002 Ford F350, Door Ajar Light on constantly, Auto Locks don't operate, Auto Headlights don't operate(only manually), Dome Light does not operate when opening doors, Remote does not work. All


Your keyless entry system is going bad and you need a battery for your keyless entry system once you replace your battery with the new one thing should work properly

Feb 06, 2018 | Ford Cars & Trucks

1 Answer

I have a 2006 Volkswagen New Beetle and don't know how to operate the convertible top. My car didn't come with an operators manual


Hello! locating a free operators manual isn't an easy task...Amazon.com has one for around $15...Thia is your best bet...Guru...saailer

Nov 22, 2011 | 2006 Volkswagen New Beetle

1 Answer

Door lock not working on the drivers side. 1999 Ford Explorer. Need wiring diagram and how to remove the parts.


Visual Inspection Chart Mechanical Electrical
  • Binding latches
  • Door lock cylinder
  • Misaligned door
  • Lock actuator
  • Fuse
  • Relays
  • Switch
  • Wiring harness
  • Loose or corroded connections
Symptom Chart Condition Possible Sources Action
  • The door lock is inoperative
  • Circuitry.
  • Power door lock actuator (218A42).
  • GO to Pinpoint Test A .
PINPOINT TEST A: THE DOOR LOCK IS INOPERATIVE CONDITIONS DETAILS/RESULTS/ACTIONS A1 CHECK THE OPERATION OF THE SUSPECT DOOR LOCK sxn~us~en~file=box1.gif~gen~ref.gifCheck for binding or stuck conditions by manually operating the inoperative door lock.
  • Is the lock stuck or binding?
sxn~us~en~file=arrow.gif~gen~ref.gifYes REPAIR or REPLACE the binding components. TEST the system for normal operation.
sxn~us~en~file=arrow.gif~gen~ref.gifNo GO to A2 . A2 CHECK THE POWER DOOR LOCK ACTUATOR FOR LOCK OPERATION — CIRCUIT 117 (PK/BK) sxn~us~en~file=box1.gif~gen~ref.gif
sxn~us~en~file=ic0004.gif~gen~ref.gif Inoperative Power Door Lock Actuator
sxn~us~en~file=box2.gif~gen~ref.gif
sxn~us~en~file=gn0085a.gif~gen~ref.gif sxn~us~en~file=box2.gif~gen~ref.gifMeasure the voltage at the inoperative power door lock actuator connector Pin 1, Circuit 117 (PK/BK), and ground while operating the door lock switch to the LOCK position.
  • Is the voltage greater than 10 volts?
sxn~us~en~file=arrow.gif~gen~ref.gifYes GO to A3 .
sxn~us~en~file=arrow.gif~gen~ref.gifNo REPAIR Circuit 117 (PK/BK). TEST the system for normal operation. A3 CHECK THE POWER DOOR LOCK ACTUATOR FOR UNLOCK OPERATION — CIRCUIT 118 (PK/O)/163 (R/O) sxn~us~en~file=box1.gif~gen~ref.gif
sxn~us~en~file=gn0086a.gif~gen~ref.gif sxn~us~en~file=box1.gif~gen~ref.gifMeasure the voltage at the inoperative power door lock actuator connector Pin 2, Circuit 118 (PK/O) or 163 R/O, and ground while operating the door lock switch to the UNLOCK position.
  • Is the voltage greater than 10 volts?
sxn~us~en~file=arrow.gif~gen~ref.gifYes INSTALL a new power door lock actuator. TEST the system for normal operation.
sxn~us~en~file=arrow.gif~gen~ref.gifNo REPAIR Circuit 118 (PK/O) and/or 163 (R/O). TEST the system for normal operation.

Mar 10, 2010 | 1999 Ford Explorer

1 Answer

I cannot get the rear electric windows to operate


Hi! U need to check the switch and the motor

Jan 21, 2009 | 2003 Mitsubishi Galant

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