No Communication with Electronic Brake Control Module. Oldsmobile Alero 2000

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 2000 🢒 Alero 🢒 Brakes 🢒 Antilock Brake System 🢒 No Communication with Electronic Brake Control Module

The EBCM exchanges serial data through EBCM harness connector terminal 12.

Connector terminal 4 supplies the switched ignition voltage to the EBCM.

Connector terminal 13 supplies the battery voltage to the EBCM.

Connector terminal C supplies the switched battery voltage to the EBCM.

Connector Terminal D provides the ground for the EBCM.

Communication with the EBCM is not possible when excessive resistance exists in the following components:

•	The ground

•	The power supply circuits

If communication with the EBCM is not possible, perform the following actions:

•	Verify that the EBCM ground connection is good.

•	Verify that no excessive resistance exists in any of the power supply circuits.

Step	Action	Value(s)	Yes	No
1	Was the ABS Diagnostic System Check performed?	--	Go to DTC U1001-U1254 Loss of XXX Communications in Data Link Communications	Go to Diagnostic System Check - ABS