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2002 L300 BCM circuit board diagram - Saturn Cars & Trucks

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Posted on Jan 02, 2017

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spteched
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SOURCE: Will I damage or confuse the BCM (Body Control Module) in my 2011 Toyota Tacoma by adding an additional lighting circuit ?

you can connect them to your running lights,they just need to run off any power.doesnt matter where you get it from,but if you want them to come on with the lights thats what i would do.un less you power a switch an run the running boards from the switch.just more work that way,also you have to hit the switch everytime at night.

Posted on Feb 21, 2012

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pcdj64
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SOURCE: saturn L300 oiling circuit diagram needed

you have the 3.0 V6, there is an oil cooler under the intake manifold that is known to cause problems, be very very careful if you try to fix it yourself, the saturn 3.0 is not an easy engine to deal with.

Posted on Oct 10, 2012

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SOURCE: saturn L300 oiling circuit diagram needed

cual es la diferriensia entre un motor de una durango 99 y un troca 2002 dodge

Posted on Dec 23, 2012

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2007 HHR rear hatch will not unlock


Do you know how to test automotive electrical circuits ? Viewing wiring diagrams an using a DMM - digital multi-meter . Looking at a wiring diagram I see a relay ,L/GATE RELSE relay - # 18 underhood fuse box . It's controlled by the BCM - body contol module . The liftgate release switch is a input to the BCM . Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size. Under system click on body & accessories ,then under subsystem click on tailgate release . Click the search button then the first blue link.

Pressing the Liftgate Release Switch closes a contact providing a ground for the Liftgate Release Switch Signal circuit. The BCM will detect the voltage drop and command voltage to be supplied to the Liftgate Release Relay Control circuit thus energizing the LIFTGATE RELEASE Relay which provides voltage to the Release Actuator releasing the liftgate.

Do you know what a DTC - diagnostic trouble code is ?
DTC B3265 01: Hatch Release Output Circuit Short to Battery
DTC B3265 06: Hatch Release Output Circuit Short to Ground or Open

B3265 01
This DTC will set when the BCM detects a short to battery in the liftgate release relay control circuit.
B3265 06
This DTC will set when the BCM detects an open or short to ground in the liftgate release relay control circuit.

VEHICLE RELAYS Testing from the relay base
VEHICLE RELAYS Operation Diagnosis

Mar 28, 2018 | Cars & Trucks

1 Answer

2008 Saturn Vue Hybrid courtesy lights up front and mid cabin don't go on when door is open. Rear cargo does. Otherwise they do work


When the body control module (BCM) is in an active state (awake) it energizes the courtesy lamps supply voltage circuit. The courtesy lamps supply voltage circuit supplies voltage to all of the interior lamps, including the illuminated entry lamps (courtesy lamps). The illuminated entry lamps are turned ON when they receive a battery positive voltage from the courtesy lamp supply voltage circuit of the BCM. When the ignition is in the LOCK position the BCM will apply the courtesy lamp supply voltage circuit under the following conditions:
• The door jamb input transitions to an active state (opening a door).
• The use of the remote keyless entry (RKE) to unlock the side doors.

Do you know how to do automotive electrical circuit testing using a DVOM- digital volt ohm meter and a wiring diagram to pin point testing areas of a circuit ?
Circuit/System Description
The body control module (BCM) applies battery voltage to the courtesy lamps through 2 separately controlled courtesy lamp supply voltage circuits. When any door is opened, the door ajar switch contacts close and the BCM receives a door-ajar input. If the BCM receives a door lock or unlock input or a rear hatch open input, the BCM will activate the courtesy lamp supply voltage circuits, providing battery voltage to all of the instrument panel (I/P) courtesy lamps, dome lamps, rearview mirror lamps, and rear compartment lamps. In the event that any of these lamps were to remain illuminated for more than 20 minutes with the ignition switch in the OFF position, the BCM will deactivate the courtesy lamp control circuits to prevent a total battery discharge condition.

You can view free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine ! Under system click on lighting ,then under subsystem click on interior lighting . Click the search button then the blue link. Looking at the first diagram you will see on the top left a fuse box , this B+ for the BCM ,top right is the BCM .You will see three wires coming out the bottom of the BCM , these go to your courtesy lamps , The thing's that look like a open switch inside the BCM , they are transistors or high side drivers . When commanded these supply B+ voltage to the lights . Finding the BCM an testing output voltage would be my first step , before taking the inside of the vehicle apart to find wiring harness to test .

Jul 01, 2017 | Saturn Cars & Trucks

2 Answers

BCM fuse keeps blowing


Sounds like you may have a pinched wiring in the circuit where the fuse supplies power to. Might want to remove all the components that this circuit operates and one by one connect them. Once the fuse pops, you have isolated the circuit and all you need to do is follow the specific wiring to that bad circuit and find the problem.

Dec 18, 2016 | Cars & Trucks

2 Answers

2002 lincoln towncar door ajar light s stay on after minor accident. Only goes off when in drive. Can't find the fuse. I have to disconnect the battery


You have one or more door ajar sensor switches that are defective, have the BCM (Body control module) scanned to see which door is causing it, the light can be turned on by any of the 4 doors. The sensor is located inside the door on the door latch mechanism, there is no fuse as it is a ground circuit.

Oct 21, 2016 | 2002 Lincoln Town Car

1 Answer

Why wont my windows and door locks work?


It could be several thing's, fuse's , circuit breaker's , broken wire's inside the rubber boot from the car body to the door , this happens a lot on older vehicles from opening the doors over the years . The drivers door is the master switch . You need to find what fuse's , circuit breaks Power these systems . You can find that info. here http://bbbind.com/free_tsb.html . check for B+ voltage with a volt meter at the door switch an also check grounds . There are videos on youtube - basic automotive electrical trouble shooting , how to read wiring diagrams (if you don't already know) . I'm looking at a wiring diagram now , I also see that a BCM - body control module is shown on the diagram . Do you know what a BCM is ? You can google it .In automotive electronics, body control module is a generic term for an electronic control unit responsible for monitoring and controlling various electronic accessories in a vehicle's body. Typically in a car the BCM controls the power windows, power mirrors, air conditioning, immobilizer system, central locking, etc. The BCM communicates with other on-board computers via the car's vehicle bus, and its main application is controlling load drivers - actuating relays that in turn perform actions in the vehicle such as locking the doors or dimming the salon overhead lamp. If you are not familiar with these thing's your best bet would be to take your vehicle to a qualified repair shop that does .

Oct 07, 2016 | 2002 Infiniti Q45

1 Answer

Where is the fuse/s for the map lights and dome lights


ANSWER by patrick mannion on June 01, 2010
Looking at a wiring diagram the dome light and rear reading lights operate through the body control module. Check the BCM 2 fuse, BCM 1 fuse and BCM cluster fuse they may all be in the circuit. These fuses are in the engine compartment fuse box.

Dome glove box trunk vanity map lights all out 2003 Saturn L300

Aug 05, 2015 | 2003 Saturn L-Series L300

1 Answer

Where the bcm on a 2002 saturn l300


  1. Open the I/P compartment door.
  2. Remove the I/P compartment lamp assembly by pulling on the lamp plunger.
  3. Disconnect the lamp wiring harness from the I/P compartment.
  4. Remove the lower closeout panel from the right side of the instrument panel (I/P).
  5. Pull the closeout panel rearward to detach the panel from the retainers.
  6. Remove the retainer from the heater outlet assembly on the right side and remove the outlet.
  7. Remove the I/P compartment door. .
  8. Remove the I/P compartment bin fasteners.
  9. Slowly remove the I/P compartment bin, tilting the bin downward, to expose the BCM residing on the top of the I/P compartment.
  10. Remove the BCM module from the I/P compartment by sliding the module out of the attaching slots.
  11. Remove the BCM harness connectors.

Aug 17, 2014 | Cars & Trucks

2 Answers

Saturn L300 oiling circuit diagram needed


you have the 3.0 V6, there is an oil cooler under the intake manifold that is known to cause problems, be very very careful if you try to fix it yourself, the saturn 3.0 is not an easy engine to deal with.

Oct 08, 2012 | Saturn L300 Cars & Trucks

1 Answer

A few days a go my locks on my 2002 saturn started fluttering and making clicking sounds. I can only unlock my car with the key now and all the locks have to be unlocked and locked manually. Then a few...


Do you or your husban know how to trouble shoot automotive electrical systems , using a wiring diagram and a DVOM - digital volt ohm meter ? Do you know how to trouble shoot electronic control modules an circuitry ? The BCM - body control module controls the power locks , anti-theft system . The first step in diagnosing problems like this involve hooking of a scan tool that can pull BCM codes . No auto parts store can check these codes .
DOOR LOCKING/UNLOCKING
Door locking/unlocking, by remote keyless entry (RKE) or driver/all door lock switches, is controlled through the BCM.
When a driver door unlock has been requested, the BCM switches circuit 694 to battery voltage. This energizes the driver door unlock relay which supplies power to the driver door lock motor. Grounding is achieved through the closed contacts of the all-door lock relay. Grounding is also achieved through the windings of the all-door lock motors and the all-door unlock relay.
When an all-door unlock has been requested, the BCM switches circuit 194 to battery voltage. This energizes the door unlock relay which supplies power to the all-door lock motors. Grounding is achieved through the closed contacts of the door lock relay. Grounding is also achieved through the winding of the driver door lock motor and the driver door unlock relay.
When an all-door lock has been requested, the BCM switches circuit 195 to battery voltage. This energizes the door lock relay which supplies power to all-door lock motors. Grounding is achieved through the closed contacts of the door unlock relay and the BCM.
Lock/Unlock power application is limited by the BCM to 7 seconds to protect lock motors.

SECURITY SYSTEM
The passlock sensor is powered by circuit 1459. The passlock sensor is grounded by circuit 1835. Passlock sensor data is supplied to the BCM by circuit 1836.
The passlock sensor data supplied to the BCM is in the form of V-codes or voltage codes. When the proper ignition key is turned in the ignition switch, the correct V-code is supplied to the BCM. The BCM responds by sending a serial data password to the engine controller allowing the engine to run.
Under a tamper condition, a specific V-code is supplied to the BCM. The BCM will send a class II message to the PCM disabling the fuel injectors.


Electric Testing Techniques You Need to Know

ECM Inputs and Outputs Diagnosis

http://www.bbbind.com/free_tsb.html free wiring diagrams ! Enter vehicle info. year , make , model an engine size . Under system click on Body & Accessories , then under subsystem click on Body controls .Then click on the search button , then the blue link . You will see all inputs and outputs from the BCM . Check B+ voltage at the door lock switches . Check door lock fuse 20amp . Check door lock an unlock relays .


https://en.wikipedia.org/wiki/Body_control_module

Also test the starting circuit !
How to voltage drop test starter motor circuit


May 10, 2017 | 2002 Saturn S-Series

1 Answer

2002 gmc yukon radio and wipers and windows stop working the I can hit middle consal and it might or might not work for a will Help


Power for those devices is provided from the retained accessory power which is controlled by the BCM (body control module) which is in the console.I had the same problem with the radio, wipers and windows all stopping. I tried running the diag procedure for the BCM but couldn't get in to run. I then read online about a loose connection in the BCM, so I took the 4 screws out of the console, got access to the BCM and removed it. inside is a small circuit board. On the back of the circuit board where most of the soldering is, there was a bad connection to a relay. Re-soldered the connection and the problem went away.

Jun 07, 2009 | 2000 GMC Yukon Denali

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