What would cause the ABS module to run continuously?

The ABS EBCM anti-lock brake module is failing causing problems with the ABS pump running constantly, also will drain your battery.

1. Remove the ABS fuse to prevent ABS motor burn out.
2. You can still drive your vehicle with the module removed.
3. We recommend covering the exposed surface of the hydraulic control unit with aluminum foil to keep out water and dirt.

Common Failures:

• ABS Pump Always Running
• Codes: C0265, C0267, C0268
• Pump Motor Circuit trouble code
• Power Relay trouble code
• Valve Relay Trouble code
• Dump Valves (solenoids) trouble codes
• No Communication
• Intermediate power loss

http://www.myairbags.com/dtc-code-c0265-abs-ebcm-light/

When a pump code comes on for the abs it is usually associated with the module connected to the pump. Most of the time either the relay controlling power to the pump loses it's continuity on the board or the connector builds corrosion and resistance in the terminals. Most of the time depending on the make and model an the exact code it can be remedied by purchasing a new or used abs module/ pump, repairing the old module/ pump, or just replacing with a new module/ abs pump(most expensive option). It is very common for abs relay/ pump codes to appear and end up relating to the power or ground circuit going to open( breaking continuity it frying a connection form resistance)

One thing that would affect spark and fuel pump power is the EEC relay.
I would start with checking that.
The spout connector should be in the harness near the ignition module. Its a connector with a plug you remove to set base timing.

The fuse should be in the under hood fuse panel.The other thing you can do is disconnect the power wire to the ebcm.The ebcm is located on the passengers side below the drivers door area.Just unplug the 2 wire connector.It is the red and a black wire.About 10 gauge.The top part of this unit is the electronic brake control module and it is the cause of the motor running continuously.The problem is that water gets in to this and shorts out the unit.There are only 4 torx screws that hold this on but they are not easy to get at and sometimes they strip.I believe it is a number 20 torx bit.Hope this helps.Good luck.

wow.. i think..your mechanic is from some old school before they used igintion switches.. when you turn you key off.. it should stop all current going to coming from your battery. try crawling under you truck and spray an rust cleaner like wd 40 on the inside of you wheels .. use more than you think you should as it sounds like you have a rusted wheel sensor on one or more of you wheels..

Your ABS actuator pump is running ... needs to be checked by certified mechanic

The ABS Control Module is out. Common problem on GMC

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

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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

THE EBCM IS BAD this is the electronic control module that is on abs pump. you can replace seperate I think it is around 500 for part

Go to Module Master. I had the same problem sent mine in and came back. took less then 5 minutes to R/R. www.modulemaster.com

Prior to 2004, Durangos with 4 wheel ABS use the Kelsey Hayes Dodge controller attached to the hydraulic unit. Durangos with just rear wheel ABS use the Kelsey Hayes 125 located separately from the hydraulic unit.
2004 and later Durangos use the Bosch 5.4 controller.

Kelsey Hayes Dodge 1) Disconnect the negative battery cable.
2) Push the harness connector locks to release the locks, then remove the connectors from the CAB.
3) Disconnect the pump motor connector.
4) Remove screws attaching CAB to the HCU.
5) Remove the CAB.

Kelsey Hayes 125 1) Push the CAB harness connector lock to release the lock and remove the connector from the controller.
2) Remove the RWAL valve harness connector from the controller.
3) Remove the controller mounting screws and remove the controller from the mounting bracket.

Bosch 5.4 1) Pull out the side locking tab on the Bosch controller as shown.
2) Remove the connector.
3) Remove the 6 screws and separate the controller from the hydraulic unit.

2008 Dodge Durango
Kelsey Hayes Dodge Location
1997 and earlier Durangos using the Kelsey Hayes 310

Kelsey Hayes 125 controller for Dodge trucks with rear wheel ABS only