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 78 of 1417
TROUBLESHOOTING ABS WITHOUT DIAGNOSTIC TOOLS - Continued
NOTE
ABS warning lamp should come on briefly at power up and then turn off. This indicates
that warning lamp system is operating properly. If lamp fails to illuminate or stays on, it
indicates a system problem and further testing is necessary.
h.
Turn battery switch ON.
i.
Turn start switch to RUN.
j.
Check to see if your original fault code still exists.
CONDITION/INDICATION
IS YOUR ORIGINAL PROBLEM STILL PRESENT?
DECISION
YES - Notify supervisor.
NO - Problem fixed.
END OF WORK PACKAGE
TM 9-2320-272-23-2
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