TM-9-2320-272-23-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-1 - Page 730 of 1313

FIELD MAINTENANCE

ALL VEHICLE ELECTRICAL SYSTEMS INOPERATIVE

INITIAL SETUP:

Tools and Special Tools

Tool Kit, General Mechanic's: Automotive

(Volume 5, WP

0826, Table 1, Item 56)

Multimeter

(Volume 5, WP

0826, Table 1, Item 34)

Test Set, Electronic Systems

(Volume 5, WP

0826, Table 1, Item 51)

Personnel Required

(2)

References

Point to Point Schematics

References (cont.)

Volume 2, WP

0319

Volume 2, WP

0346

Volume 2, WP

0349

Volume 2, WP

0350

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

ALL VEHICLE ELECTRICAL SYSTEMS INOPERATIVE

NOTE

Conduct these malfunction tests if all vehicle electrical systems are inoperative. This

procedure will check the battery cable connections, batteries, and the protective control box.

TM 9-2320-272-23-1

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