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 948 of 1313

FIELD MAINTENANCE

ONE OR MORE TRAILER LIGHTS 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.)

WP

0094

WP

0095

WP

0096

Volume 3, WP

0352

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

ONE OR MORE TRAILER LIGHTS INOPERATIVE

NOTE

Conduct these malfunction tests if one or more trailer lights are inoperative. This procedure

will check for battery voltage at trailer receptacle, faulty wires or connections at trailer

receptacle and faulty lamps.

TM 9-2320-272-23-1

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