This task covers:
c. Sensor Output Voltage Test
Trailer parked on level ground, brakes engaged.
Tool kit, mechanics general, NSN 5180
and wheels chocked.
Slack adjusters backed off.
The ABS is an electrical system. When working on the ABS the same precautions
must be taken as with any electrical system to avoid serious personal injury.
The danger of electrical shock or sparks exists which could ignite flammable
suibstances. Always disconnect the power to the system before any repairs are
When welding on an ABS equipped vehicle or trailer, disconnect the power
connector from the ECU. Also disconnect the power from the ECU/Valve
Assembly before removing any components. Failure to do so can cause faults
to be recorded and stored in the ECU memory.
Grasp the sensor (4) (not the cable ), and using a twisting motion, pull the sensor out of
the mounting block sensor holder (6).
Remove the spring clip (5) from the sensor holder (6).
Remove any fasteners (10) holding the sensor cable to other components.
Disconnect the sensor cable (1) from the extension cable.