TM-9-2350-261-20-1

CARRIER, M113A2, M577A2, M1064, M1068, M1059 AND M901A1

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL - VOLUME 1 OF 4

TM-9-2350-261-20-1 - Page 246 of 346

TM 9-2350-261-20-1

HORN DOES NOT OPERATE

0037 00

INITIAL SETUP:

Maintenance Level

Unit

Tools and Special Tools

Digital Multimeter (WP 0780 00, Item 43)

General Mechanic’s Tool Kit (WP 0780 00, Item 29)

Jumper Wire

Personnel Required

Unit Mechanic

Helper (H)

References

See your -10

Equipment Condition

Engine stopped/shutdown (see your -10)

Carrier blocked (see your -10)

Trim vane lowered (see your -10)

Power plant front access door open (see your -10)

T

1.

Turn MASTER SWITCH to ON (see your -10).

2.

Is MASTER POWER indicator on?

TN

1.

Go to Master Switch On Indicator

Does Not Light (WP 0046 00).

Y

1.

Remove horn ground lead plug (1) from horn jack (2).

2.

Measure continuity between horn ground lead plug

(1) and ground.

3.

Does multimeter read 0 ohms?

YN

1.

Replace horn ground lead and/or

connector (WP 0255 00).

2.

Verify no faults found.

003700-1