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 282 of 1452

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

0149-6

DRAFT

0149

TFFT04484

Step 9.

Shut off water pump engine (WP 0022).

Turn battery disconnect switch to OFF position

(WP 0007).

Open pump house panel A (WP 0539).

Disconnect pump operator’s panel

wire harness water pump engine ECU wire harness connector.

With a test lead set,

check for 60 ohms from water pump ECU wire harness connector,

terminal 12 to

terminal 13.

If 60 ohms are not present, replace pump operator panel wire

harness (WP 0459).

Step 10.

Open pump operator’s panel housing (WP 0325).

Disconnect pump operator’s panel

wire harness water pump engine gauge panel wire harness connector.

With a test lead

set, check for 60 ohms from water pump engine gauge panel wire harness connector,

terminal 1 to terminal 2.

a.

If 60 ohms is present, replace water pump engine gauge

panel (WP 0340).

b.

If 60 ohms is not present, replace pump operator’s panel wire

harness (WP 0459).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION