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 73 of 1417
TROUBLESHOOTING ABS WITHOUT DIAGNOSTIC TOOLS - Continued
STEP
9.
IS BATTERY VOLTAGE OK?
a.
Set multimeter to measure VDC.
T0702DAA
BLACK
RED
68-6
68
68
68-6
Figure 6.
Battery Test Points.
b.
Connect multimeter red lead to battery positive (+) terminal. Refer to point to point schematics.
c.
Connect multimeter black lead to battery negative (-) terminal.
d.
Meter reading should be between 21 and 24 VDC.
CONDITION/INDICATION
IS BATTERY VOLTAGE OK?
DECISION
NO - Service batteries (WP
0346). Go to Step (15) to verify problem is solved.
YES - Go to Step (10).
STEP
10.
IS ABS SUPPLY VOLTAGE OK?
a.
Hood raised & secured.
b.
Turn battery switch ON.
TM 9-2320-272-23-2
0156
0156-10
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