TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
14. MAIN FRAME DOES NOT UNLOAD IN MANUAL MODE (MODEL A ONLY)
(continued).
CONTINUITY TEST
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply
with this caution may result in dam-
CAB CONTROL
9-PIN LINKING
age to test equipment or electrical
HARNESS
BOX CONNECTOR
system.
(J2)
CONNECTOR (J5)
(1) Disconnect cab control box connector
(P2) from cab control box.
(2) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an open
circuit.
(3) Connect multimeter between (9-pin)
linking harness connector (J5),
position A, and cab control box
connector (J2), position F. Check
multimeter for continuity.
NOTE
Any reading besides infinity indicates
a grounded wire.
CAB CONTROL
BOX CONNECTOR
(4) Remove multimeter lead from one end
(P2)
of wire and connect to chassis
ground.
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