Connect negative (-) probe of multimeter to a known good ground.
Multimeter should display a reading between 22 and 28 vdc. Note reading.
Set heavy-duty winch control station HIGH IDLE ON/OFF switch to OFF position. (WP 0015)
Set PTO ENGAGE switch to OFF position. (WP 0015)
Shut OFF engine (refer to TM 9-2320-279-10).
Are 22 to 28 vdc measured on wire 1516 at engine harness connector MC4, terminal H?
No - Test 24 - Can engine harness wire 1516 be repaired?
Yes - Test 25 - Can cab harness wire 1516 be repaired?
TEST 24 - Can engine harness wire 1516 be repaired?
Ensure electrical power is off prior to working on all electrical connections. Failure to comply
may result in injury or death to personnel.
Remove all jewelry such as rings, ID tags, bracelets, etc. prior to working on or around
vehicle. Jewelry and tools can catch on equipment, contact positive electrical circuits, and
cause a direct short, severe burns, or electrical shock. Failure to comply may result in injury
or death to personnel.
Wire is not repairable if damage cannot be visually located or if a prior repair has already
reduced length of wire. Wire is not repairable if after repair, wire is too short to reach its