Question about 1997 Jeep Grand Cherokee

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INSTRUMENT PANEL WORKS ON AND OFF, STEERING WHELL CONTROL DOESN'T WORK NEITHER DO THE ELECTRIC WINDOWS, REPLACED THE BCM WITH A USED ONE, WHEN WE TRY TO HOOK UP TO NY STATE INSPECTION EVERYTHING CUTS OUT HAVE HAD IT TO AN ELECTRICAL MECHANIC FOR OVER 30 HRS CANT SEEM TO FIND THE PROBLEM

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Your problems seems quite complicated and time consuming.You will need to check all wiring connection and continuity before going further. You should be careful to avoid further damage.

Posted on Jul 20, 2009

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98 buick century turn signal not flashing but bulb comes on


Do the hazard light's work ? Did you try replacing the turn/ hazard flasher ?
Remove the LH instrument panel (IP) insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gauges and Console.
Remove the steering column filler panel. Refer to Steering Column Opening Filler Replacement in Instrument Panel, Gauges and Console.
Grasp the hazard and turn signal flasher and slide the flasher to the right to release the flasher tabs from the slots on the BCM bracket.
Disconnect the electrical connector from the hazard and turn signal flasher.

Hazard Lamp/Turn Signal Lamp Flasher
Below left side of the IP, mounted on the multipurpose bracket, near the BCM

Oct 14, 2017 | Buick Cars & Trucks

1 Answer

2005 cavalier dash lights not working. all fuses are goood. replaced cluster, dimmer switch, multifunction switch


Back lighting or warning lights ? check engine , ABS , air bags , seat belt , oil light etc... ?
Interior Lamps Dimming
The second group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination and incandescent lamps.
• Power window switches
• HVAC control head assembly
• Radio
• The instrument panel cluster (IPC)
When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) display (radio) turns on at maximum brightness. When the park lamps are ON all incandescent back lighting turn ON at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK position, the park lamp supply voltage circuit provides an input to the body control module (BCM). The BCM then supplies voltage to the instrument panel dimmer switch through the instrument panel dimming lamps control circuit. The setting of the instrument panel dimmer switch determines the amount of voltage that the instrument panel dimmer switch supplies to the BCM through the instrument panel dimming lamps low reference circuit. The BCM then sends a pulse width modulated (PWM) voltage to all the interior lamps. All the vacuum florescent (VF) and incandescent back lighting lamps are provided a specific voltage and are then grounded. When the headlight switch is turned to the PARK or HEADLAMP position, all incandescent back lighting turn on at the dimming level indicated by the IP dimmer switch. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch.

I would have it checked for DTC'S - diagnostic trouble codes stored in the BCM !
DTC B2624 Display Dimming Input Range/Performance
The body control module (BCM) supplies voltage to the instrument panel dimmer switch through the instrument panel dimmer switch signal circuit. The dimmer switch varies the voltage and returns the new voltage to the BCM through the dimmer switch signal return circuit. The BCM uses this voltage to determine the illumination level of the instrument panel lamps.

DTC B2625 Display Dimming Pulse Width Modulation (PWM) Output Circuit Range/Performance
The body control module (BCM) receives a variable voltage from the instrument panel (I/P) lamp dimmer switch. The BCM uses this signal in order to vary the illumination level of the I/P lamps. The I/P dimming lamps output from the BCM is a pulse width modulated voltage supply used to light the I/P lamps. If a malfunction occurs in the I/P dimming lamps output circuit, this DTC is set.

DTC B2662 Park Lamp Switch Circuit Malfunction
The park lamps are controlled by the turn/headlamp switch. Positive battery voltage is supplied to the switch through the EXT LP fuse. When the turn/headlamp switch is placed in the park or head position, battery voltage is supplied to the park lamps. The body control module (BCM) is also connected to the park lamp circuit to sense whether or not the park lamps turn ON when the low beam or high beam headlamps are turned ON. The BCM also uses the parklamp battery positive voltage to power the instrument panel (I/P) dimmer output circuit. If the BCM senses that the low beam or high beam headlamps are ON and the park lamp input is not active, DTC B2662 sets.
Do the park lamps work ?

Jun 11, 2017 | Cars & Trucks

2 Answers

What tools are needed to replace BCM?


Important: Perform new BCM setup when you replace Body Control Module (BCM). Refer to Body Control Module (BCM) Programming/RPO Configuration .
Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gauges and Console.
Disconnect the BCM electrical connectors.
Push the BCM up and move the bottom of the BCM away from and out of the mounting bracket slot in order to remove the BCM.
During Body Control Module (BCM) related service, the procedures below are designated to set-up the BCM correctly. Before you start, read these procedures carefully and completely.

Setup New Body Control Module (BCM)
Tools Required
Scan Tool (Tech 2) GM factory scan tool !
Important:
• Read this procedure carefully and completely.
• The BCM will not function properly if the Setup New BCM procedure is not performed.
• Perform the Theft Deterrent Re-learn procedure after successfully finishing the Setup New BCM procedure. If the Theft Deterrent Re-learn procedure is not performed after a BCM replacement, the following conditions may occur:
- The vehicle will not be protected against theft by the PASSLOCK system.
- The engine will not crank nor start. Your best bet is to take your vehicle to a dealer or a ASE certified repair shop who has proper tools .

Feb 16, 2016 | 2000 Oldsmobile Intrigue

1 Answer

I have a 2006 Pontiac torrento and my steering wheel gets hard. not all the time it dos it 1 a day at least Dont know whats the problem i have try to check for the fuled but no luck plz help


Your vehicle has electric power steering . GM had a recall on some of it's vehicle .
The electric power steering (EPS) system reduces the amount of effort needed to steer the vehicle. The system uses the body control module (BCM), power steering control module (PSCM), torque sensor, discrete battery voltage supply circuit, EPS motor, serial data bus, and the instrument panel cluster (IPC) message center to perform the system functions. The PSCM, torque sensor, nor the EPS motor are serviced separately from each other or from the steering column. Ant EPS components diagnosed to be malfunctioning requires replacement of the steering column assembly, also known as the EPS assembly.

Oct 20, 2015 | Pontiac Cars & Trucks

1 Answer

Instrument cluster is not working.


The odometer "error" is usually a BCM (body control module) problem, not the instrument panel. All the electrical signals you have lost all go to the BCM before going to the instrument panel.
It could be a simple connector problem.

Apr 15, 2014 | 2002 Buick Rendezvous

1 Answer

How to change the horn on a 2011 ford fiesta


How do you know it's the horn ? Do you have a volt meter ? Check for voltage at the horns . Before replacing parts , test . Go to youtube an watch a few basic electrical trouble shooting videos . Your vehicle has two horns an the possibility of both going out is 0 . When you press the horn switch it is a signal to the BCM - body control module , then the BCM turns on the horns . Do you have an airbag light lit on the instrument cluster ? The clock spring in the steering column could be open .What fuse did you check . F32 in the battery junction box - fuse box under the hood in engine compartment . How cars clock spring works

Nov 12, 2012 | 2011 Ford Fiesta

1 Answer

Dash board speedometer, rpm gauge and all other instruments turn off. If I beat on the dash sometimes it all turns back on, but mostly not! Also when instrument panel turns off, door locks won't...


Sounds like the instrument cluster main wiring harness pins on the instrument cluster circuit board. How are you with a soldering gun? Just re-flow the solder on the 13 pins of the main wiring connector on the instrument cluster circuit board, and you should be fine. To get there, you need to remove:
- the lower dash panel under the steering wheel (5 screws),
- instrument bezel cover around the steering column (2 screws),
- instrument cluster cover (3 screws to my recollection),
- and then instrument cluster (4 screws)

If the problem returns or persists, then consider re-flowing the solder on the #331 resistor on the body control module circuit board - there is only one of these on the circuit board. To get the bcm out, remove:
- lower dash panel under steering column (5 screws)
- metal kick plate - 10 bolts and 1 screw (although not necessary, you can get more room by removing the lower metal dash bracket as well - 5 bolts)
- three 10mm bolts holding the bcm in place
- 2 wiring connectors on the bottom of the bcm
- 4 wiring connectors on the front of the bcm - You need to back off the connectors with a nut driver - they were either 11mm or 12 mm

Then:
- remove the metal bcm cover - 3 small bolts
- remove the circuit board - 4 screws
- use a magnifying glass to find the #331 resistor
You're probably best off replacing this resistor while you have everything accessible. (this is apparently the standard re-build fix for these bcm's) I didn't have a suitable replacement, so I just re-melted the solder. After re-installing everything, all my previous dash board gremlins disappeared.

Give yourself 2-3 hours (well maybe 4) for all this.

Sep 18, 2011 | 1997 Dodge Caravan

1 Answer

My interior light wont go off. I turned the car off and locked the door but nothing is working.


Wait for 1 minute. If light still doesn't go out then it is either a bad door latch or possible body control module(bcm)
Sometimes if you unplug the bcm and wait a minute and plug it back in it may work again. Sometimes they lock up.



Body Control Module Replacement Removal Procedure

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    Notice: Electrostatic discharge (ESD) can damage many solid-state electrical components. ESD susceptible components may or may not be labeled with the ESD symbol. Handle all electrical components carefully. Use the following precautions in order to avoid ESD damage: • Touch a metal ground point in order to remove your body's static charge before servicing any electronic component; especially after sliding across the vehicle seat. • Do not touch exposed terminals. Terminals may connect to circuits susceptible the ESD damage. • Do not allow tools to contact exposed terminals when servicing connectors. • Do not remove components from their protective packaging until required to do so. • Avoid the following actions unless required by the diagnostic procedure: - Jumpering or grounding of the components or connectors. - Connecting test equipment probes to components or connectors. Connect the ground lead first when using test probes. • Ground the protective packaging of any component before opening. Do not rest solid-state components on metal workbenches, or on top of TVs, radios, or other electrical devices.
    Important: You must perform the new body control module (BCM) setup when replacing the BCM. Refer to Control Module References .
  1. Pull the left instrument panel (I/P) compartment access hole cover from the I/P trim pad.
  2. Press to release the cam lock. Disconnect the upper electrical connector from the BCM.
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  3. Remove the left I/P insulator fasteners.
  4. Rotate the lamp. Remove the lamp from the insulator.
  5. Remove the left I/P insulator.
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  6. Disengage the data link connector (DLC) retainers. Remove the DLC from the I/P trim pad.
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  7. Use a plastic trim tool to remove the ignition switch bezel.
  8. Pull the I/P accessory trim plate rearward slightly for access to the steering column filler. Refer to Instrument Panel Accessory Trim Plate Replacement .
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  9. Remove the I/P steering column opening filler screws.
  10. Pull the I/P steering column opening filler rearward. Remove the I/P steering column opening filler.
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  11. Press to release the cam lock. Disconnect the lower BCM electrical connectors.
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  12. Remove the BCM screws.
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  13. Remove the BCM.

Oct 09, 2010 | 2008 Pontiac Grand Prix

1 Answer

Where is a power steering pump located on a 4 cylinder chevy cobalt ls


Your Cobalt is not equiooed with a Power Steering Pump. It has electric power steering. See the description below.

Power Steering - System Description and Operation
The electric power steering (EPS) system reduces the amount of effort needed to steer the vehicle. The system uses the body control module (BCM), power steering control module (PSCM), torque sensor, discrete battery voltage supply circuit, EPS motor, serial data bus, and the instrument panel cluster (IPC) message center to perform the system functions. The PSCM, torque sensor, not the EPS motor are serviced separately from each other or from the steering column. Any EPS components diagnosed to be malfunctioning requires replacement of the steering column assembly, also known as the EPS assembly.

Nov 20, 2009 | 2005 Chevrolet Cobalt

1 Answer

Where is a power steering pump located on a 4 cylinder in a 2005


Your Cobalt is not equipped with a Power Steering Pump. It is equipped with electric power steering. See the description below.


Power Steering - System Description and Operation
The electric power steering (EPS) system reduces the amount of effort needed to steer the vehicle. The system uses the body control module (BCM), power steering control module (PSCM), torque sensor, discrete battery voltage supply circuit, EPS motor, serial data bus, and the instrument panel cluster (IPC) message center to perform the system functions. The PSCM, torque sensor, not the EPS motor are serviced separately from each other or from the steering column. Any EPS components diagnosed to be malfunctioning requires replacement of the steering column assembly, also known as the EPS assembly.

Nov 20, 2009 | 2005 Chevrolet Cobalt

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