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 367 of 1452

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

0155-5

DRAFT

0155

TFFT04371

Step 6.

Install fuse FS 4 (WP 0401).

Remove personnel cab instrument panel C (WP 0311).

Disconnect cab instrument panel wire harness SIDE WARNING switch connector.

Turn

battery disconnect switch to ON position (WP 0007).

Turn Service Drive Lights On

(TM 9-2320-347-10).

Put EMERG MASTER switch to on position (WP 0004).

With a

test lead set, check for 22 to 28 VDC between cab instrument panel wire harness wire

1648 (yellow) at cab instrument panel wire harness SIDE WARNING switch connector,

terminal 6 and a known good ground.

If 22 to 28 VDC are present, go to Step 8.

Step 7.

Put EMERG MASTER switch to off position (WP 0004).

Turn Service Drive Lights Off

(TM 9-2320-347-10).

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

Disconnect cab instrument panel wire harness cab power distribution wire harness

connector.

With a test lead set, check for continuity across cab instrument panel wire

harness wire 1648 (yellow) from cab instrument panel wire harness connector, terminal

10 to cab instrument panel wire harness SIDE WARNING switch connector, terminal 6.

a.

If there is continuity, repair wire 1648 in cab power distribution wire

harness if repairable (TM 9-2320-325-14&P), or replace cab power

distribution wire harness and block (WP 0441).

b.

If there is no continuity, repair wire 1648 in cab instrument panel wire

harness if repairable (TM 9-2320-325-14&P), or replace cab instrument

panel wire harness (WP 0440).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION