TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
15. LHS DOES NOT OPERATE PROPERLY IN AUTO MODE (CAB ONLY)
(continued).
ACCESS
COVER
CONTINUITY TEST
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply
CAB
with this caution may result in dam-
CONTROL
age to test equipment or electrical
BOX
system.
(1) Remove four screws and lockwashers
and access cover from heater
CAB CONTROL BOX
compartment.
CONNECTOR (P2)
(2) Disconnect wiring from components.
(3) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an open
circuit.
(4) Connect multimeter to leads at each
end of wire and check multimeter for
continuity. Check (24-pin) linking
harness, positions C and F.
NOTE
Any reading besides infinity indicates
a grounded wire.
(5) Remove multimeter lead from one end
of wire and connect to chassis
ground.
MAIN JUNCTION BOX
CONNECTOR (P4)
4-323
