Cutlass V6-191 3.1L VIN M SFI (1998)
Electronic Brake Control Module: Description and Operation
Notice
There is no serviceable or removable PROM. The Electronic Brake Control Module (EBCM) must be replaced as an assembly.
The Electronic Brake Control Module (EBCM) controls the ABS VI. A microprocessor controls the EBCM.
The inputs to the system include the following components:
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The four wheel speed sensors
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The brake switch
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The ignition switch
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The unswitched battery voltage
The outputs include the following components:
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Three bi-directional motor controls
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Warning indicators
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Two solenoid controls (ABS)
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A system enable relay
A serial data line is provided for service diagnostic tools and assembly plant testing. The serial data line is located in terminal 9 of the Data Link
Connector (DLC).
The EBCM monitors the speed of each wheel.
The EBCM controls the motors and the solenoids in order to reduce brake pressure to a particular wheel when the following conditions exist:
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The wheel is approaching slip.
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The brake switch is active.
This cycle will repeat until one of the following conditions exists:
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The vehicle comes to a stop.
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The brake releases.
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The wheel no longer approaches slip.
Refer to Self-Diagnostics for more information.
