Bendix Commercial Vehicle Systems EC-60 ATC STD/PREM CONTROLLERS - Manual (Page 11)

11
Troubleshooting: General
GENERAL SAFETY GUIDELINES
WARNING! PLEASE READ AND FOLLOW
THESE INSTRUCTIONS TO AVOID PERSONAL
INJURY OR DEATH:
When working on or around a vehicle, the following
general precautions should be observed at all times:
1. Park the vehicle on a level surface, apply the
parking brakes, and always block the wheels.
Always wear safety glasses.
2. Stop the engine and remove ignition key when
working under or around the vehicle. When
working in the engine compartment, the engine
should be shut off and the ignition key should be
removed. Where circumstances require that the
engine be in operation, EXTREME CAUTION should
be used to prevent personal injury resulting from
contact with moving, rotating, leaking, heated or
electrically charged components.
3. Do not attempt to install, remove, disassemble
or assemble a component until you have read
and thoroughly understand the recommended
procedures. Use only the proper tools and observe
all precautions pertaining to use of those tools.
4. If the work is being performed on the vehicle’s
air brake system, or any auxiliary pressurized air
systems, make certain to drain the air pressure
from all reservoirs before beginning ANY work
on the vehicle. If the vehicle is equipped with a
Bendix ® AD-IS ® air dryer system or a dryer reservoir
module, be sure to drain the purge reservoir.
5. Following the vehicle manufacturer’s recommended
procedures, deactivate the electrical system in a
manner that safely removes all electrical power
from the vehicle.
6. Never exceed manufacturer’s recommended
pressures.
7. Never connect or disconnect a hose or line
containing pressure; it may whip. Never remove
a component or plug unless you are certain all
system pressure has been depleted.
8. Use only genuine Bendix ® brand eplacement parts,
components and kits. Replacement hardware,
tubing, hose, fittings, etc. must be of equivalent
size, type and strength as original equipment and
be designed specifically for such applications and
systems.
9. Components with stripped threads or damaged
parts should be replaced rather than repaired. Do
not attempt repairs requiring machining or welding
unless specifically stated and approved by the
vehicle and component manufacturer.
10. Prior to returning the vehicle to service, make
certain all components and systems are restored
to their proper operating condition.
11. For vehicles with Automatic Traction Control (ATC),
the ATC function must be disabled (ATC indicator
lamp should be ON) prior to performing any vehicle
maintenance where one or more wheels on a drive
axle are lifted off the ground and moving.
REMOVING THE EC-60 ™ 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 EC-60 ™ controller assembly mounting position
on the vehicle.
4. Disconnect the electrical connectors from the EC-60 ™
controller.
5. Remove and retain the mounting bolts that secure the
EC-60 ™ controller.
INSTALLING A NEW EC-60 ™ CONTROLLER
CAUTION! When replacing the EC-60 ™ 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 EC-60 ™ 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 EC-60
™ controller in the original
mounting orientation using the mounting bolts retained
during removal. On frame-mount ECUs, torque the
mounting bolts to 7.5 to 9 NM (66-80 in. Ibs). For cab-
mount units use no more torque than is necessary to
firmly secure the ECU into position. Over-tightening the
mounting hardware can cause damage to the EC-60 ™
controller.
2. Reconnect the electrical connectors to the EC-60 ™
controller.
3. Apply power and monitor the EC-60 ™ controller power-
up sequence to verify proper system operation.
See Troubleshooting: Wiring section beginning on page 32
for more information on wiring harnesses.