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 301 of 1417
NG31: GAUGE TEST
STEP
1.
Perform offset test.
a.
Connect P1 of test probe cable W2 to J4 on VTM.
b.
Short red and black clips together.
c.
Dial 89 into TEST SELECT.
Table
1.
Voltage Test.
TEST NO.
TEST
89
0-45 Volts DC
d.
Press and hold TEST until CAL message appears on display.
T0018DAA
Figure 1.
CAL Prompt Message.
e.
Release TEST.
f.
Wait for offset value to appear on display.
CONDITION/INDICATION
Is offset value within limits of -6.8 to +6.8?
DECISION
YES - Go to Step (2).
NO - STE/ICE is bad. Notify supervisor.
TM 9-2320-272-23-2
0200
0200-2
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