Grand Caravan V6-3.3L VIN E Flex Fuel (2007)
Electronic Brake Control Module: Description and Operation
Antilock Brake Module (MK25E)
Description
DESCRIPTION
The Antilock Brake Module (ABM) is a microprocessor-based device which monitors the antilock brake system (ABS) during normal braking and
controls it when the vehicle is in an ABS stop or when in a traction control situation. The ABM utilizes a 47-way electrical connector on the vehicle
wiring harness. The power source for the ABM is through the ignition switch in the RUN or ON position.
The ABM is mounted to the HCU as part of the Integrated Control Unit (ICU) (Figure 1). The ICU is located in the engine compartment below the
master cylinder on the front suspension cradle/crossmember. For information on the ICU.
Figure 1 Mk25e ICU
Operation
OPERATION
The primary functions of the Antilock Brake Module (ABM) are to:
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Monitor the antilock brake system for proper operation.
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Detect wheel locking or wheel slipping tendencies by monitoring the speed of all four wheels of the vehicle.
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Control fluid modulation to the wheel brakes while the system is in an ABS mode.
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Store diagnostic information.
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Provide communication to the scan tool while in diagnostic mode.
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Illuminate the amber ABS warning indicator lamp.
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(With traction control only) Illuminate the TRAC ON lamp in the message center on the instrument panel when a traction control event occurs.
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(with traction control only) Illuminate the TRAC OFF lamp when the amber ABS warning indicator lamp illuminates.
The ABM constantly monitors the antilock brake system for proper operation. If the ABM detects a fault, it will turn on the amber ABS warning
