Bendix Commercial Vehicle Systems EC-80 ABS ATC SD - Manual (Page 12)

12
Troubleshooting: General
Read and follow the General Safety Guidelines on
page two (2) of this document.
REMOVING THE BENDIX ® EC-80 ™
CONTROLLER ASSEMBLY
1. Turn vehicle ignition off.
2. Remove as much contamination as possible prior to
disconnecting air lines and electrical connections.
3. Note the ECU assembly mounting position on the vehicle.
4. Disconnect the electrical connectors from the ECU.
5. Remove and retain the mounting bolts that secure
the ECU.
INSTALLING A NEW BENDIX ®
EC-80 ™ CONTROLLER
When replacing the Bendix ® EC-80 ™ controller, verify
that the unit you are installing has the correct default
settings. Failure to do so could result in a loss of
features, such as ATC and PLC, or noncompliance
with U.S. regulations such as FMVSS 121. It is
recommended to use only the correct replacement part
number. However, most configuration settings can
be altered using the Bendix ® ACom ® ABS Diagnostic
Software program.
Verify correct operation of the Bendix
EC‑80 controller
system and indicator lamps prior to putting the vehicle back
into service. Towing vehicles manufactured after March 1,
2001 must support the trailer ABS indicator lamp located
on the dash.
For further information, contact either the vehicle
manufacturer, Bendix ® or your local authorized Bendix ®
dealer.
1. Position and secure the Bendix
EC‑80 controller in the
original mounting orientation using the mounting bolts
retained during removal. When mounting the unit in
the cab, use no more torque than is necessary to firmly
secure the ECU into position. Over‑tightening the
mounting hardware can cause damage to the Bendix
EC‑80 controller.
2. Reconnect the electrical connectors to the ECU.
3. Apply power and monitor the Bendix
EC‑80 controller
power‑up sequence to verify proper system operation.
See Troubleshooting: Wiring section beginning on page 32
for more information on wiring harnesses.