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 71 of 1417
TROUBLESHOOTING ABS WITHOUT DIAGNOSTIC TOOLS - Continued
STEP
6.
IS THE ABS GROUND WIRE OK?
a.
Ensure battery and start switches are in the OFF position.
b.
Hood raised & secured.
T0861DAA
CONTROL BOX
ABS POWER SUPPLY
CONNECTOR (WIRE #10)
GROMMET
FIREWALL
ABS GROUND
WIRE
CONTROL HARNESS
GROUND WIRE
LOCKWASHER
BOLT
TIEDOWN
STRAP
Figure 5.
ABS Power Supply Connection.
c.
Check the ABS ground wire for damage and a sound connection. Refer to point to point schematics.
CONDITION/INDICATION
IS THE ABS GROUND WIRE OK?
DECISION
NO - Repair or replace ABS ground harness (Volume 3, WP
0465). Go to Step (15) to verify problem is solved.
YES - Go to Step (7).
TM 9-2320-272-23-2
0156
0156-8
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