ABS Enable Relay Test

ABS ENABLE RELAY TEST
Tools Required
Scan Tool
This test allows monitoring of the voltage at the electronic brake control module (EBCM) while turning the ABS enable relay ON and OFF.
When the relay is commanded ON, the voltage should be equal to the battery voltage. When the relay is OFF, the voltage should drop below 5 volts.

Important: Voltage will not drop to zero when the relay contacts are open due to capacitors in the EBCM. If the voltage drops below 5 volts, the relay is operating properly.