TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
3.
ENGINE HIGH IDLE DOES NOT OPERATE (MODEL A ONLY) (continued).
CONTINUITY TEST
CAB CONTROL BOX
CONNECTOR (P2)
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply with
this caution may result in damage
to test equipment or electrical sys-
tem.
(1) Disconnect wire harness from
components.
(2) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an
open circuit.
(3) Connect multimeter to leads at each
end of wiring harness, and check
multimeter for continuity. Check (24-
pin) linking harness positions "N" and
"R."
NOTE
Any reading besides infinity indi-
cates a grounded wire.
(4) Remove multimeter lead from one end
of wire and connect to chassis ground.
MAIN JUNCTION BOX
CONNECTOR (P4)
Change 1
4-71
