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 807 of 1313
HEADLAMP (BOTH SIDE) INOPERATIVE - Continued
STEP
3.
IS THERE BATTERY VOLTAGE AT MAIN LIGHT SWITCH HARNESS CONNECTOR?
a.
Place battery switch to OFF position.
T0756DAA
Figure 3.
Main Lighting Switch.
b.
Remove lighting switch from instrument panel and disconnect harness
connector (Volume 2, WP
0315).
c.
Place battery switch to ON position.
d.
Connect multimeter red lead to connector socket pin F. Refer to point to point schematics.
e.
Connect multimeter black lead to good ground.
f.
Meter reading should be greater than 18 VDC.
CONDITION/INDICATION
IS THERE BATTERY VOLTAGE AT MAIN LIGHT SWITCH HARNESS CONNECTOR?
DECISION
NO - Go to Step (4).
YES - Go to Step (5).
TM 9-2320-272-23-1
0093
0093-4
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