17
16992140 Rev C
tRouBlesHootInG
Disconnect the RELAY MODULE CONNECTOR for the following steps.
The controller will not detect most electrical faults with the relay module connected.
SYMPTOM/DIAGNOSTIC
RESULT
FIX
PUMP MotoR not RUnning When UP, LeFt oR Right PResseD
Status light blinks ONCE
Continuity Problem
Check RED WIRE/MOTOR RELAY
Check voltage at MOTOR terminals with UP, LEFT, or
RIGHT buttons pressed
If voltage present - MOTOR is bad
Replace MOTOR
Check cable continuity between MOTOR RELAY and
MOTOR
If no continuity, check cable, connections, and
replace if necessary
Replace/repair cable or connections
Check control signal to MOTOR RELAY (small wires
to motor relay) with UP, LEFT, or RIGHT buttons
pressed
If voltage present and no click is heard when
buttons are pressed, MOTOR RELAY is bad
Replace MOTOR RELAY
Check ground continuity between between control
ground at MOTOR RELAY and battery ground
If no continuity, check cable, connections, and
replace if necessary
Replace/repair cable or connections
PLoW Won't Move at aLL, Moves "jeRKiLY", veRY sLoWLY, oR ChatteRs
Check fluid level in reservoir
Fluid should be visible in elbow fitting.
Add fluid
Air in fluid
Bleed air from system
Slightly loosen fittings to angle cylinders and move
the plow wings. Tighten fittings while fluid is
escaping. Do this over an absorbent mat, or hold a
rag over fitting to absorb excess fluid.
oiL is LeaKing FRoM CYLinDeRs
Packing is loose
Tighten gland until leak stops
Rods are pitted
Polish rods with fine steel wool
Replace cylinder
oiL sPRaYs oUt oF vent PoRt in PoWeR Unit
Air in Fluid
Bleed air from system
Slightly loosen fittings to angle cylinders and angle
the plow. Tighten fittings while fluid is escaping.
Do this over an absorbent mat, or hold a rag over
fitting to absorb excess fluid.
Check fluid level
Fluid should be visible in elbow fitting.
Remove fluid if necessary - in most cases the
problem will subside as entrapped air dissipates.
PLoW Won't DRoP
Status light blinks 8 times
Continuity Problem
Check PURPLE WIRE/S1B COIL
Check voltage at S1B VALVE coil
If no voltage present, check cable and connections
Replace/repair cable or connections
Check DROP SPEED control valve
DROP SPEED valve should be several turns from
fully closed
Open DROP SPEED valve
Check S1B VALVE for contamination
Poppet must move freely, and seat area must be
clear of any debris
Remove S1B VALVE and check free movement of
poppet, clean any chips/debris from poppet seat
Replace S1B VALVE
Check LIFT LOCK valve for contamination
Poppet must move freely, and seat area must be
clear of any debris
Remove LIFT LOCK valve and check free movement
of poppet, clean any chips/debris from poppet seat
Replace LIFT LOCK valve
PLoW Won't LiFt
Status light blinks 2 times
Continuity Problem
Check BLUE WIRE/S1A COIL
Check voltage at S1A VALVE coil
If no voltage present, check cable and connections
Replace/repair cable or connections
Check S1A VALVE for contamination
Poppet must move freely, and seat area must be
clear of any debris
Remove S1A VALVE and check free movement of
poppet, clean any chips/debris from valve
Replace S1A VALVE
PLoW Won't angLe
Status light blinks 3 times
Continuity Problem
Check GREEN WIRE/S2 COIL