Question about 2001 Dodge Ram 2500 Truck

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Abs pump motor on a 2000 dodge 2500 van will not shut off

Abs motor only will stop if i pull the fuse for it no leaks of brake fluid detected...whats next?

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Sensors are in wheel bearings,you may have a bad bearing

Posted on Aug 03, 2009

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How to diagnose an ABS problem


You need to find out what code is stored in the ABS control module, if the light is on there is a DTC an the system is disabled ! Don't know if auto part stores can pull ABS codes or not , You'll have to check it out . Personally I say take it to a ASE certified repair shop if you don't know anything about anti lock brakes !
?€¢
Electronic Brake Control Module (EBCM) -- The EBCM controls the system functions and detects failures.


The EBCM contains the following components:


?€¢
System Relays -- The inlet and outlet solenoid relay is energized when the ignition is ON and no ABS DTCs are present. It supplies battery positive voltage to the solenoid valves, the pump motor relay is energized and supplies battery positive voltage to the pump motor when ABS is activated.


?€¢
Brake Pressure Modulator Valve (BPMV) -- The BPMV contains the hydraulic valves and pump motor that are controlled electrically by the EBCM. The BPMV uses a 4 circuit configuration with a diagonal split. The BPMV directs fluid from the reservoir of the master cylinder to the left front and right rear wheels and fluid from the other reservoir to the right front and left rear wheels. The diagonal circuits are hydraulically isolated so that a leak or malfunction in one circuit will allow continued braking ability on the other.


This system can store 10-12 DTC's for something simple as wheel speed sensors to wiring problems to a malfunction of the EBCM . Some of these problems you would need a professional type scan tool ! The antilock brake system on your vehicle is the
BOSCH 8.0 antilock braking system
The vehicle is equipped with the following braking systems:
?€¢
Antilock Brake System (ABS)


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Dynamic Rear Proportioning (DRP)


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Traction Control System (TCS) (w/NW7)

The following components are involved in the operation of the above systems:
?€¢
Electronic Brake Control Module (EBCM) -- The EBCM controls the system functions and detects failures.


The EBCM contains the following components:


?€¢
System Relays -- The inlet and outlet solenoid relay is energized when the ignition is ON and no ABS DTCs are present. It supplies battery positive voltage to the solenoid valves, the pump motor relay is energized and supplies battery positive voltage to the pump motor when ABS is activated.


?€¢
Brake Pressure Modulator Valve (BPMV) -- The BPMV contains the hydraulic valves and pump motor that are controlled electrically by the EBCM. The BPMV uses a 4 circuit configuration with a diagonal split. The BPMV directs fluid from the reservoir of the master cylinder to the left front and right rear wheels and fluid from the other reservoir to the right front and left rear wheels. The diagonal circuits are hydraulically isolated so that a leak or malfunction in one circuit will allow continued braking ability on the other.


Important: There is a rubber isolator located under the BPMV and on the mounting studs. The rubber isolators protect the BPMV and the EBCM from vehicle vibrations.


?€¢
The BPMV contains the following components:


-
Pump Motor


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Inlet Valves (one per wheel)


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Outlet Valves (one per wheel)


?€¢
Wheel Speed Sensors (WSS) -- As the wheel spins, the wheel speed sensor produces an AC signal. The EBCM uses this alternating current signal to calculate wheel speed. The wheel speed sensors are replaceable only as part of the wheel hub and bearing assemblies.


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Traction Control Switch (w/NW7) -- The TCS is manually disabled or enabled using the traction control switch.


?€¢
Stop Lamp Switch - The EBCM uses the stop lamp switch as an indication that the brake pedal is applied

Sep 21, 2015 | 2006 Saturn ION

3 Answers

Antilock light came on in my 2000 Ford Expedition. I am told it may be a fuse or fuses I need to check. I am not seeing anything on the fuse diagram which ones to check. Any thoughts?


I don't I have ever replaced an ABS fuse. Most likely you have a bad wheel sensor. Have the codes read. You will still have brakes until you get it repaired. Just not anti lock brakes. Meaning that the wheels will stop turning if you hit the brakes hard enough.

Mar 01, 2015 | 2000 Ford Expedition

1 Answer

My truck leaks brake fluid after being shut off?


i think there could be air in the system and it takes a little while to work back to the reservoir and the release of the air is pushing out the fluid. try bleeding the entire brake system from each wheel to the master cylinder see if it stops it

Jul 20, 2012 | 2001 Dodge Ram 3500 Truck

1 Answer

1998 Dodge Caravan New brakes. Front Axel removed to get to power steering pump to remove it. Got van back brakes felt strange had to hit them hard car pulled infront of me. ABS light came on. brakes...


Bad brake master cylinder could cause this, It will start leaking internally and not build up pressure. Will happen just do to age, will need to replace it and bleed brake system.

Jun 12, 2017 | 1998 Dodge Caravan

1 Answer

ABS LIGHT WILL NOT GO OFF AS WELL AS EMERGENCY BREAK LIGHT 1995 DODGE RAM 2500 V 10 BRAKES ARE SPONGY


you need to find out why they are spongy? fluid low? brake fluid leak? master cylinder problem? ck the fluid level, if its real low, you need to find out where it went.

Sep 24, 2009 | 1995 Dodge Ram 2500

1 Answer

2001 dodge 2500 very little brake pedal. brake fluid disappears


You Must determine that Master Cylinder is NOT LEAKING into the Brake BOOSTER this is a Leak that CANNOT be Detected Easyly, If not Rear Brake SHOES Worn OUT Can CAUSE LOW Brake Pedal Problem

Aug 12, 2009 | 2001 Dodge Ram 2500 Truck

1 Answer

ABS brake module sounds like a motor running and won't stop unless battery is disconnected. what is fix?


I would pull the fuse for the ABS hydraulic pump and then put it back in and see what happens. Don't ever recall a pump running. Dealer may need to hook up scan tool for diagnostic fault codes, DTCs.



Principles of Operation
The ABS control module receives wheel speed readings from both front wheel speed sensors and the rear differential speed sensor, and processes this information to determine if an ABS event is necessary. The wheel speed sensor electrically senses each tooth of the ABS sensor indicators as it passes through the wheel speed sensor's magnetic field.
The ABS control module continuously monitors and compares the rotational speed of each wheel speed sensor indicator and, when it detects an impending wheel lock, modulates brake pressure to the appropriate brake caliper(s). This is accomplished by triggering the hydraulic control unit (HCU) to open and close the appropriate solenoid valves. Once the affected wheel returns to normal speed, the ABS control module returns the solenoid valves to their normal position, and normal (base) braking resumes.
The ABS control module is self-monitoring. When the ignition switch is turned to the RUN position, the ABS control module will do a preliminary electrical check, and at approximately 20 km/h (12 mph), the pump motor is turned on for approximately one-half second. Any malfunction of the ABS system will cause the ABS to shut off; normal power assisted braking, however, remains.
Inspection and Verification — Scan Tool Communications Check
  1. Verify the customer concern by carrying out the Drive Cycle Test.
  1. Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Parking brake cable
  • Tire pressure
  • Tire size or mismatched tires
  • Blown fuse
  • Central junction box (CJB):
    • fuse 23 (10A)
  • Battery junction box
    • fuse 102 (50A)
  • Connectors or connections
  • Ground integrity
  • Harness routing
  • Wire chafing
  • Circuitry open/shorted

-----------------------------------------------------------------------
Anti-Lock Control The four-wheel anti-lock brake system (4WABS) consists of the following components:
  • Anti-lock brake control module (2C265)
  • Front anti-lock brake sensor (2C204)
  • Front anti-lock brake sensor indicator (2C182)
  • Hydraulic control unit (2C219)
  • Rear anti-lock brake sensor (2C190)
  • Rear anti-lock brake sensor indicator (2C189)
  • Yellow ABS warning indicator

May 07, 2009 | 2000 Ford Expedition

1 Answer

ABS Light illuminated on Van


ABS diagnostics requires a scan tool (Chrysler DRB II, DRB III or aftermarket equivalent). the plug is located near the brake pedal. this is the only alternative to get the ABS light off.

Nov 08, 2008 | 2000 Dodge Grand Caravan

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