TM-5-4210-249-13-P-2

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 2 OF 4

TM-5-4210-249-13-P-2 - Page 298 of 1452

TM 5-4210-249-13&P-2

0150-12

DRAFT

0150

TFFT03837

WARNING

ICON 3

Remove rings, wristwatches, neck chains, and any other jewelry before working

around vehicle.

Jewelry can catch on equipment and cause serious injury.

Jewelry

and tools may short across electrical circuits and cause damage to equipment, or

severe burns or electrical shock to personnel.

NOTE

A short to ground in system may exist.

Steps 15 and 16 will verify if wire 1052 (brown) and

1053 (yellow) in cab power distribution wire harness are shorted to ground or if short exist

in siren control.

Step 15.

Turn battery disconnect switch to OFF position (WP 0007).

Put EMERG MASTER

switch to OFF position (WP 0007).

With a test lead set, check for continuity (short to

ground) across main wire harness wire 1052 (brown) from main wire harness main 3

connector, terminal 1 to a known good ground.

If there is continuity, repair wire 1052 in main wire harness if

repairable (TM 9-2320-325-14&P), or replace main wire

harness (WP 0455).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION