TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 888 of 1313
ALL GAUGES INOPERATIVE - Continued
T0082DAA
Figure 2.
Circuit Breaker Test.
c.
Refer to point to point schematics.
d.
Reconnect circuit 5A wire and disconnect circuit 27 wire from circuit breaker.
e.
Place battery switch to ON position.
f.
Connect multimeter red lead to circuit 27 circuit breaker terminal.
g.
Connect multimeter black lead to vehicle chassis ground.
h.
Meter reading should be greater than or equal to 18 VDC.
CONDITION/INDICATION
IS CIRCUIT BREAKER IN GOOD OPERATING CONDITION?
DECISION
YES - Go to Step (3).
NO - Replace circuit breaker (Volume 2, WP
0307). Go to Step (4) to verify problem is solved.
TM 9-2320-272-23-1
0104
0104-3
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