Electronic Brake Control Module: Testing and Inspection
Scope
The values and readings for measuring signals and levels in the ABS control module are given in the following information.
Points to remember:
^ Observe the test conditions. Use common sense in assessing the readings.
^ The readings presented are with the ignition ON unless otherwise stated.
^ Start by checking that the control module is receiving power and is grounded.
^ Check all sensor inputs and signals from other systems.
^ Finally, check the control module outputs. Remember that the readings do not provide an indication that the actuator is operating.
^ If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components that need further checking.
^ The specified readings are valid for a correctly calibrated Fluke 88/97.
^ The readings % (+) and ms (+) indicate the pulse ratio and pulse length. A test instrument capable of measuring both pulse ratio and pulse length must be used. The '+' sign denotes a positive trigger pulse (TRIG+).
Connection, test readings
IMPORTANT: The readings apply to measurements taken on the control module's connector (unplugged) unless otherwise stated.
Connector View:
