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.
1. Remove engine cover and side panels (refer to TM 9-2320-279-10).
2. Disconnect engine harness connector MC20.
3. Connect positive (+) probe of multimeter to wire 451 at high idle active relay R10 connector, terminal 30. Refer