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 112 of 1417

ABS - CODE S2A 03 (LEFT SIDE - BLUE CHANNEL) - Continued

b.

Disconnect the left rear-rear wheel speed sensor.

c.

Set multimeter to measure resistance.

d.

Connect multimeter red lead to wheel speed sensor connector terminal. Refer to point to point

schematics.

e.

Connect multimeter black lead to wheel speed sensor connector other terminal.

f.

Meter reading should be between 980 and 2,350 ohms.

g.

If meter reading is correct, connect wheel speed sensor connector.

CONDITION/INDICATION

IS LEFT REAR-REAR WHEEL SPEED SENSOR OPEN OR SHORTED?

DECISION

YES - Replace wheel speed sensor (Volume 3, WP

0468). Go to Step (4) to verify problem is solved.

NO - Go to Step (2).

TM 9-2320-272-23-2

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