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 282 of 1313
ENGINE FAILS TO CRANK - Continued
STEP
4.
DO BATTERIES HAVE PROPER VOLTAGE?
a.
Set multimeter to measure voltage.
VEHICLE DIAGNOSTIC
CONNECTOR
ABS DIAGNOSTIC CONNECTOR
T0863DAA
Figure 4.
DCA Connection.
b.
Connect multimeter red lead to DCA connector, terminal V. Refer to point to point schematics.
c.
Connect multimeter black lead to DCA connector, terminal W.
d.
Meter should display a reading between 23.5 and 25.5 VDC.
CONDITION/INDICATION
DO BATTERIES HAVE PROPER VOLTAGE?
DECISION
NO - Replace defective batteries (Volume 2, WP
0346). Go to Step (9) to verify problem is solved.
YES - Go to Step (5).
TM 9-2320-272-23-1
0006
0006-5
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