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 98 of 1417
WHEEL SPEED SENSOR OUTPUT TEST - Continued
DECISION
NO - Reconnect and align wheel speed sensor (Volume 3, WP
0468). Go to Step (5) to verify problem is solved.
YES - Perform ABS - Start - Retrieving Codes With Haldex Info Center to retrieve stored codes (WP
0161).
STEP
3.
DOES RIGHT REAR-REAR WHEEL SPEED SENSOR INDICATE A VALID SIGNAL WHEN TESTED?
a.
Remove jack stand and lower left rear-rear wheel.
b.
Uncage left rear-rear brake.
c.
Cage right rear-rear wheel brakes.
d.
Raise right rear-rear wheels until they are off the ground M939 (Volume 3, WP
0484), M939A1/A2
(Volume 3, WP
0485). Support vehicle with jackstand.
e.
Ensure Info Center is connected to ABS diagnostic connector.
f.
Rotate right rear-rear wheel at least 2 revolutions in 4 seconds.
T1002DAA
Figure 5.
Info Centre "S2B" Display.
g.
Code "S2B" should be displayed on Info Centre.
CONDITION/INDICATION
DOES RIGHT REAR-REAR WHEEL SPEED SENSOR INDICATE A VALID SIGNAL WHEN TESTED?
DECISION
NO - Go to Step (4).
YES - Go to Step (5).
TM 9-2320-272-23-2
0160
0160-5
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