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Showing posts with label controller. Show all posts

Tuesday, April 1, 2014

How to Install a Brake Controller on a 2005 RAM 1500

The Dodge Ram is Chryslers series of full-size pickup trucks that has been in production since 1981. The number in the series indicates the rated carrying capacity of the truck, such that a Ram 1500 is a 3/4 ton pickup. The 2005 Dodge Ram has an antilock braking system, or ABS, like most late-model vehicles. The brake controller, or hydraulic control unit -- HCU -- contains a microprocessor that calculates the amount of force that the brakes apply to each wheel in an emergency stop.

Instructions

Use a socket wrench to remove the housing for the left front turn signal. Disconnect the panel under the housing. Unplug the horns electrical connector and remove the access cover for the horn.

Disconnect the mounting bolts on the reservoir for the windshield washer fluid with a socket wrench. Detach the hose and electrical connector from the pump for the windshield washer. Remove the reservoir from the vehicles engine compartment.

Remove the battery and the power distribution center from the vehicle with a socket wrench. Disconnect the mount for the battery and power distribution center, and remove the mount from the vehicle. Detach the wiring harness from the HCU. Remove the fittings for the brake lines, and detach the brake lines from the HCU.

Disconnect both mounting bolts for the HCU with a socket wrench. Tilt the HCU up, and pull it from its bracket.

Install the new HCU to its mounting bracket, and torque the mounting bolts to 11 foot-pounds with a torque wrench. Attach the HCU brake lines, tighten the fittings to 115 inch-pounds. Connect the electrical wiring harness to the HCU.

Install the windshield washer reservoir. Attach the electrical connector and hose for the reservoir. Fasten the reservoirs mounting screws with a socket wrench.

Replace the mount for the battery and power distribution center with a socket wrench. Install the battery and power distribution center. Attach the horns electrical connector, and replace the access cover for the horn. Install the left front turn signals panel and housing.

Friday, January 31, 2014

2006 Trailblazer Brake Controller Installation

The Chevrolet TrailBlazer is a sport utility vehicle that was a trim level of the Blazer from 1999 to 2001. General Motors made the Trailblazer a separate model in 2002 until the end of its production in the United States during 2008. All 2006 Trailblazers have an anti-lock braking system controlled by a microprocessor known as a brake controller, or Electronic Brake Control Module (EBCM). This device adjusts the braking force to each wheel during emergencies to prevent the wheels from locking.

Instructions

Remove the cable from the negative terminal of the battery with a socket wrench to prevent the discharge of electricity when you remove the EBCM. Clean the area around the EBCM in the engine compartment on the driver side of the engine. This will keep the braking components from becoming contaminated.

Detach the connectors for the electrical wiring on the EBCM. Disconnect the four mounting screws on the EBCM with a T 25-Torx tool, and discard the screws. Pull the EBCM gently to remove it from the Brake Pressure Modulator Valve (BPMV).

Clean the mounting surfaces on the BPMV with a clean shop towel to avoid contaminating the new EBCM. Fasten the new EBCM to the BPMV with a T-25 Torx tool, using new mounting screws. Tighten the mounting screws to 39 inch-pounds, working in an X-pattern. Attach the electrical connectors to the EBCM.

Connect a scan tool to the vehicles data link connector which is under the instrument panel to the left of the steering wheel. Perform the tire size calibration function according to the scan tools instructions, and disconnect the scan tool. Connect the cable to the negative terminal on the battery using a socket wrench.

Friday, November 15, 2013

How to Install a Brake Controller in a Suburban

The GMC Suburban was a large sport utility vehicle that General Motors rebranded as the GMC Yukon XL in 1999. It has an anti-lock braking system with a controller that reduces the braking force to a wheel that rotates more slowly than the other wheels. This keeps the wheels from locking under emergency conditions. You may need to install a new brake controller if the Anti-lock Braking System (ABS) warning light comes on. The brake controller in a GMC Suburban is in the engine compartment, on the left side of the engine.

Instructions

Label the electrical connectors on the brake controller, then detach them from the brake controller. Label the brake lines on the brake controller, then disconnect the brake line fittings with a socket wrench. Detach the brake lines from the brake controller.

Disconnect the mounting bolts for the brake controller bracket with a socket wrench. Remove the brake controller and its bracket from the vehicle as an assembly. Disconnect the mounting bolts for the brake controller, and detach the brake controller from its bracket.

Attach the new brake controller to its bracket, and tighten the mounting bolts to 5 foot-pounds with a torque wrench. Install the brake controller assembly to the vehicle, and tighten the mounting bolts to 33 foot-pounds with a torque wrench.

Install the brake controller assembly to the vehicle, and tighten the mounting bolts to 33 foot-pounds with a torque wrench.

Attach the brake lines to the brake controller, using the labels from step one as a guide. Tighten the brake line fittings to 16 foot-pounds with a torque wrench. Connect the electrical connectors to the brake controller, using the labels from step one as a guide.

Bleed the brake controller valve to remove the air from the brake system. Bleed the entire braking system.

Saturday, October 26, 2013

How to Install a Brake Controller on a 1999 Suburban

A Suburban is a sport utility vehicle that General Motors manufactures under its Chevrolet brand. The anti-lock braking system (ABS) is a standard feature on late-model Suburbans that allows the vehicle to stop more effectively in an emergency. A brake controller, or electronic brake control module (EBCM), reduces the braking force to a wheel when it rotates significantly more slowly than the other wheels. The installation procedure for the EBCM is generally the same for all Suburbans made from 1999 to 2005.

Instructions

Disconnect the cable from the negative battery terminal with a socket wrench to prevent an electrical discharge during the EBCM installation procedure. Raise the vehicle with a floor jack, and support it on jack stands.

Locate the Electronic Hydraulic Control Unit, or EHCU, under the vehicle on the drivers side. It is bolted on the frame next to the drive shaft. The EHCU is an assembly of the EBCM, the brake pressure modulator valve (BPMV) and a mounting bracket. The mounting bracket attaches to the frame of the vehicle, the BPMV attaches to the mounting bracket and the EBCM attaches to the top of the BPMV. The EHCU is generally a black cube about 3 inches on a side with connections for the brake lines and the ABS pump motor when it is fully assembled. Wash the area around the EHCU with a shop rag to avoid contamination of the EBCM.

Detach the electrical connector from the EBCM. The EBCM is a thin, black, rectangular box mounted atop the BPMV. Remove the fittings for the brake lines with a socket wrench and disconnect the brake lines from the BPMV. The BPMV is the component under the EBCM that has connections for the brake lines and attaches to the EHCU mounting bracket. Remove the mounting bolts for the EHCU bracket with a socket wrench and disconnect the bracket from the vehicle.

Disconnect the mounting bolts for the BPMV with a socket wrench and detach the BPMV from the EHCU. Disconnect the electrical connector for the ABS motor from the EBCM. Remove the mounting bolts for the EBCM, and detach the EBCM from the BPMV.

Clean the mounting surface on the BPMV with a clean shop cloth. Mount the new EBCM onto the BPMV, and fasten the EBCM with the retaining bolts that came with the EBCM. Tighten the retaining bolts to 39 inch-pounds with a torque wrench. Attach the electrical connector for the ABS motor to the EBCM.

Install the BPMV to its bracket and tighten the mounting bolts to 80 inch-pounds with a torque wrench. Connect the EHCU to the vehicle and tighten the EHCU bracket bolts to 18 foot-pounds. Attach the electrical wiring harness to the EBCM.

Attach the brake lines to the BPMV and tighten the fittings to 18 foot-pounds with a torque wrench. Lower the vehicle, and connect the cable to the negative battery terminal with a socket wrench. Bleed the brake system.

Wednesday, October 23, 2013

How to Install a Brake Controller on a Chevy

An anti-lock brake controller prevents the brakes from locking the wheels in an emergency stop. It accomplishes this by varying the braking force to each wheel during emergency stops or when skidding on a slippery surface. Anti-lock braking systems became standard on most Chevrolet vehicles by about 1991. The procedure for installing a brake controller is the same for many General Motors cars made from 1988 to 1996, such as the Lumina, Grand Prix, Cutlass Supreme and Regal.

Instructions

Turn the ignition switch off and move the front passenger seat forward as far as possible. You may also need to tip the passenger backrest forward to access the brake controller underneath the seat.

Remove the mounting bolts on the cover of the brake controller case with a socket wrench, and slide the controller from its case. Remove the connector position assurance (CPA) locking pins, and detach the electrical connector from the brake controller. Remove the brake controller from the vehicle.

Attach the electrical connectors to the new brake controller. Install the CPA locking pins to ensure a good electrical connection.

Place the new brake controller in its case, and replace the cover for the case. Install the mounting bolts for the cover, and tighten the retaining bolts by hand.

Return the front passenger seat to its original position.