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ELECTRONIC TROUBLESHOOTING E-78 & E-88
1. Basic E-78 and E88 System Description
The system is made up of three main components
consisting of the Remote Control Module (RCM),
Plow Control Module (PCM) and Headlamp Control
Module (HCM).
The RCM is located in the truck cab in the form
of a handheld joystick controller. The RCM is the
device the snow plow operator uses to perform
plow functions. The RCM uses a LCD display to
reference snow plow status.
PCM
RCM
HCM
The PCM is located on the hydraulic unit which is
mounted to the lift frame on front of the vehicle.
The PCM is wired to the motor solenoid, valve
block solenoids and plow lights. When a movement
command is sent from the RCM it is translated by the
PCM into electrical outputs to activate the appropriate
solenoids to get the proper snow plow movement to
occur.
The HCM is located in the engine compartment and
is wired into the vehicle’s headlights via the adapter
harness. Park and turn signal wires are hard wired
to the vehicle park and turn circuit. When the plow
is mounted on the truck and is powered on the
HCM detects the presence of a PCM. If the truck’s
headlights are turned on the HCM will disable the truck
headlights and send a command to the PCM to turn
on the plow lights. The HCM will also send turn and
park commands to the PCM when they are detected
by the wiring.
All the commands or communications between the
three modules is performed through the power (+)
and ground ( - ) wiring for each module. Due to
commands being transmitted over the power lines it is
very important that all connections be attached directly
to the vehicle battery tight and secure to maintain good
communication.
2.0 General Installation Tips
These things can cause intermittent operation:
1.
Loose connections between the modules and
their associated power sources.
2.
Operating the RCM while plugged into the
vehicle’s cigarette lighter or accessory port.
3.
Low battery voltage, for good communication
maintain at least 11 VDC.
A low voltage situation will cause the system to
operate intermittantly. It may be necessary to power
cycle the modules. You can perform this by doing
the following:
Step 1
RCM – Power off by depressing the green
power button for 3 seconds then unplug the power
cable from the Meyer accessory jack. Then plug
cable back in and power on RCM.
Step 2
PCM – Unplug the plow cable from
connector on plow frame, wait 10 seconds then
plug back in.
Step 3
HCM – Locate fuse holder on red power
wire (near vehicle battery) and open fuse holder
by twisting, remove fuse, wait 10 seconds then put
fuse back into fuse holder.
3.0 Xpress Plow General Operation
Instructions
These instructions assume a system install has been
completed.
Power Up Sequence:
1. PCM This device should be already powered on at
the plow plug.
2. HCM
This device should be already
powered on, direct connect to battery.
3. RCM Press power button for 1 second.
Summary of Contents for E-58H
Page 8: ...E 88 Mount Motor Only 6 FIGURE 1 1...
Page 9: ...E 88 Dismount Motor and E Solenoid 7 FIGURE 1 2...
Page 10: ...E 88 Raise Motor and B Solenoid 8 FIGURE 1 3...
Page 11: ...E 88 Lower A Solenoid 9 FIGURE 1 4...
Page 12: ...E 88 Angle Left Motor and D Solenoid 10 FIGURE 1 5...
Page 13: ...E 88 Angle Right Motor and C Solenoid 11 FIGURE 1 6...
Page 14: ...E 58H E 78 Raise Motor and B Solenoid 12 FIGURE 1 7...
Page 15: ...E 58H E 78 Lower A Solenoid 13 FIGURE 1 8...
Page 16: ...E 58H E 78 Angle Left Motor only 14 FIGURE 1 9...
Page 17: ...E 58H E 78 Angle Right Motor and C Solenoid 15 FIGURE 1 10...
Page 23: ...21 E 88 ONLY...
Page 24: ...22 E 88 ONLY...
Page 25: ...23 E 88 ONLY...
Page 26: ...24 E 88 ONLY...
Page 27: ...25 E 88 ONLY...
Page 29: ...27 E 78 ONLY...
Page 30: ...E 78 ONLY 28...
Page 31: ...E 78 ONLY 29...
Page 32: ...E 78 ONLY 30...
Page 33: ...31 E 58H ONLY...
Page 34: ...E 58H ONLY 32...
Page 35: ...E 58H ONLY 33...
Page 36: ...E 58H ONLY 34...
Page 37: ...35 E 78 E 88 Wiring E 58H Wiring...
Page 40: ...38 E 58H E 78 Exploded View FIGURE 3 2 FIGURE 3 1 E 88 Exploded View...
