TEST 34 - Can cab harness wire 451 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.
Circuit breakers No. 4, 5, 6, and 10 are always electrically live. Use care when working
around these circuit breakers. 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
1. Inspect wire 451 between cab harness connector MC4, terminal J and high idle active relay R10 connector,
terminal 30 for repairability. Refer to schematics.