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 1267 of 1313
LOSS OF AMBER WARNING LIGHT AND/OR OVERSPEED LIGHT - Continued
STEP
2.
DOES WARNING LIGHT FLASH WITH BLACKOUT LIGHT SWITCH OFF?
a.
Ensure vehicle blackout light switch is OFF.
T0461DAA
ECU
CTIS AMBER
WARNING LIGHT
Figure 1.
CTIS Amber Warning Light.
b.
Check condition of warning light.
CONDITION/INDICATION
DOES WARNING LIGHT FLASH WITH BLACKOUT LIGHT SWITCH OFF?
DECISION
YES - Go to Step (3).
NO - Replace amber warning light bulb (Volume 2, WP
0321). Go to Step (7) to verify problem is solved.
TM 9-2320-272-23-1
0150
0150-2
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