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 241 of 1417
ABS - NO DATA (BLANK SCREEN ON HALDEX INFO-CENTER) - Continued
STEP
5.
IS BATTERY VOLTAGE PRESENT AT START SWITCH TERMINAL R?
a.
Turn battery switch ON.
b.
Turn start switch to RUN position.
c.
Connect multimeter red lead to start switch, terminal R. Refer to point to point schematics.
d.
Connect multimeter black lead to a known good ground.
e.
Meter reading should be between 21 and 24 VDC.
f.
Turn start switch to OFF position.
g.
Turn battery switch OFF.
CONDITION/INDICATION
IS BATTERY VOLTAGE PRESENT AT START SWITCH TERMINAL R?
DECISION
YES - Notify supervisor. It is possible another troubleshooting work package applies.
NO - Replace start switch (WP
0307). Go to Step (7) to verify problem is solved.
STEP
6.
IS BATTERY VOLTAGE PRESENT AT WIRE #10 CONNECTOR AT ABS WIRE HARNESS?
a.
Turn battery switch ON.
b.
Turn start switch to RUN position.
c.
Connect multimeter red lead to wire #10 connector at ABS wire harness. Refer to point to point
schematics.
d.
Connect multimeter black lead to a known good ground.
e.
Meter reading should be between 21 and 24 VDC.
f.
Turn start switch to OFF position.
g.
Turn battery switch OFF.
CONDITION/INDICATION
IS BATTERY VOLTAGE PRESENT AT WIRE #10 CONNECTOR AT ABS WIRE HARNESS?
DECISION
NO - Replace wire (Volume 3, WP
0464). Go to Step (7) to verify problem is solved.
YES - Notify supervisor. It is possible another troubleshooting work package applies.
TM 9-2320-272-23-2
0185
0185-4
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