Lit. No. 72131, Rev. 00
July 15, 2018
93
TAILGATE SPREADERS: PRO-FLO™ 525/900 LOW-PROFILE TAILGATE SPREADERS
HARNESS TESTING
Tools Needed:
• Multimeter
• Jumper Wire
Before running any electrical tests on the spreader,
verify that the vehicle battery and charging system
are working correctly. Make sure that there are no
broken, chafed, or corroded wires. Also, verify that
the spreader has no mechanical issues.
Check the routing of the spreader-related vehicle
harnesses, making sure they are not routed next to
any vehicle body control modules, communication
lines, or two-way radio power or antenna leads.
When testing harnesses, take care not to cause
any damage to the wires, pins, or connectors.
Checking Vehicle Control Harness
Disconnect the vehicle control harness from the
control and the vehicle spreader harness.
1. At the black 6-pin connector, check for
continuity between all pins 1–5.
There
should NOT be continuity between any
combinations of these wires.
2. Connect the jumper wire 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.
3. With the meter ground lead connected to a
vehicle ground, turn the key ON and check
for 12V on pin 4 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 the harness, as needed.
4. Check for continuity between pin 1 at the black
6-pin connector and pin 4 of the white 4-pin
connector in the cab.
5. If applicable: 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 your 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 ...
