Lit. No. 72131, Rev. 00
July 15, 2018
23
POLY HOPPER SPREADERS – TESTING
POLY HOPPER SPREADER HARNESS
TESTING PROCEDURE
(FLEET FLEX SYSTEM)
Tools Needed:
• Multimeter
• Jumper wire
Before running any electrical tests on the spreader,
verify that the vehicle battery and charging system
are working correctly, that there are no broken,
chafed, or corroded wires, and that the spreader
has no mechanical issues.
Check the routing of all spreader-related vehicle
harnesses, making sure they are not routed next to
any vehicle body control modules or any other high
frequency systems, two-way radio power leads, or
antenna wires.
When testing harnesses, take care not to cause
any damage to the wires, pins, or connectors.
Checking Vehicle Control Harness
1. Disconnect the vehicle control harness
from the control and the vehicle spreader
harness/battery cable.
2. At the black 6-pin connector, check for
continuity between all pins 1–5.
There should
NOT be any trace of continuity between
any combinations of these wires.
3. Take the jumper wire and connect it between
pins 2 and 3 of the white 4-pin connector in the
cab. Connect the meter between pins 2 and 3
of the black 6-pin connector. The meter should
read continuity.
NOTE: If the harness fails any of the above
tests, replace the harness.
4. With the meter ground lead connected to a
vehicle ground, turn the key ON and check
for 12V on pin 5 at the black 6-pin connector.
Then check for battery voltage on pin 1 of the
white 4-pin connector in the cab.
NOTE: If battery voltage is missing, repair or
replace as needed.
5. Check for continuity between pin 1 at the black
6-pin connector and pin 4 of the white 4-pin
connector in the cab.
6. If the orange CHMSL wire is connected to the
brake lighting circuit in the cab of the vehicle,
depress the brake pedal and check for 12V on
the black 6-pin connector at pin 4.
NOTE: Not all vehicles will connect in the cab.
Some may need to be connected at the rear
of the vehicle. Check the body builder's guide
pertaining to the make of the vehicle.
Summary of Contents for LOW-PRO 300W
Page 2: ......
Page 19: ...Lit No 72131 Rev 00 July 15 2018 17 POLY HOPPER SPREADERS ...
Page 39: ...Lit No 72131 Rev 00 July 15 2018 37 STAINLESS STEEL HOPPER SPREADERS ...
Page 73: ...Lit No 72131 Rev 00 July 15 2018 71 SPREADER ACCESSORIES ...
Page 84: ...Lit No 72131 Rev 00 July 15 2018 82 Tailgate Spreaders ...
Page 94: ...Lit No 72131 Rev 00 July 15 2018 92 Low Profile Tailgate Spreaders ...
Page 99: ...Lit No 72131 Rev 00 July 15 2018 97 Low Profile Tailgate Spreaders ...
