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 140 of 1417

FIELD MAINTENANCE

ABS - CODE S2A 24 (RIGHT SIDE - YELLOW CHANNEL)

INITIAL SETUP:

Tools and Special Tools

Tool Kit, General Mechanic's: Automotive

(Volume 5, WP

0826, Table 1, Item 56)

ABS Diagnostic Info Centre (TM 9-2320-272-10)

High Boy Jack Stands

(Volume 5, WP

0826, Table 1, Item 24)

Test Set, Electronic Systems

(Volume 5, WP

0826, Table 1, Item 51)

Personnel Required

(2)

References

Point to Point Schematics

WP

0159

References (cont.)

WP

0161

Volume 3, WP

0452

Volume 3, WP

0467

Volume 3, WP

0468

Volume 3, WP

0469

Volume 3, WP

0480

Volume 3, WP

0482

Volume 3, WP

0483

Volume 3, WP

0484

Volume 3, WP

0485

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

ABS - CODE S2A 24 (RIGHT SIDE - YELLOW CHANNEL)

STEP

1.

ARE ANY CONNECTORS, CABLES, OR LOOSE, CORRODED, OR DAMAGED?

a.

Ensure battery and start switches are in the OFF position.

b.

Inspect all connectors and cables for damage or corrosion. Refer to point to point schematics.

c.

Check for any loose connections.

CONDITION/INDICATION

ARE ANY CONNECTORS, CABLES, OR LOOSE, CORRODED, OR DAMAGED?

DECISION

YES - Replace ABS wiring harness (Volume 3, WP

0468). Go to Step (5) to verify problem is solved.

NO - Go to Step (2).

TM 9-2320-272-23-2

0167

0167-1