TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 255 of 1417
G01: VTM CONNECTION AND CHECKOUT (Part 1) - Continued
STEP
3.
Display does not light up, proceed as follow.
a.
Pull OFF VTM power switch.
b.
Check and clean all battery connections.
c.
Check and clean all interconnecting cables.
d.
Push ON VTM power switch.
e.
Check that display indicates .8.8.8.8 then change to – – – –.
T0002DAA
AFTER 2 SECONDS
Figure 3.
VTM Display.
CONDITION/INDICATION
Does VTM display .8.8.8.8 then change to – – – –?
DECISION
YES - Go to Step (5).
NO - Go to Step (4).
STEP
4.
Check STE/ICE operation.
a.
Connect to a known good battery to see if problem is the vehicle or the VTM.
b.
Pull OFF power switch.
c.
Use W5 to connect to a known good battery.
d.
Push ON power switch.
e.
Check if VTM display .8.8.8.8 and the change to – – ––.
TM 9-2320-272-23-2
0188
0188-4
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