TM 5-3895-379-23-1
0029
MALFUNCTION
Main Relay or Wire 112-PU Faulty.
CORRECTIVE ACTION
1.
Connect main relay connector to harness connector.
2.
Turn engine start switch to ON position (TM 5-3895-379-10).
3.
Touch positive (+) probe of multimeter to output terminal of main relay (wire 112-PU).
4.
Touch negative (-) probe of multimeter to good ground.
a.
If 24 to 28 VDC are not measured at output terminal of main relay (wire 112-PU), replace
main relay (WP 0154).
b.
If 24 to 28 VDC are measured at output terminal of main relay, repair or replace
(wire 112 - PU) and connectors to fuses (WP 0195).
SCREW
PANEL
ASSEMBLY
WASHER
WASHER
WIRE
112-PU
WIRE
SCREW
308-YL
MAIN
WIRE
RELAY
109-OR
MAIN RELAY
HARNESS
CONNECTOR CONNECTOR
OPERATOR
STATION
T0189SWR
Figure 3. Main Relay Wiring.