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 768 of 1452

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

0182-18

DRAFT

0182

TFFT04758

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.

Step 22.

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

Disconnect pump house

wire harness pump house heater 4-terminal connector.

Install jumperwire into pump

house wire harness pump house heater diagnostic module connector, terminal A wire

2852 and terminal B wire 4086.

Turn battery disconnect switch to ON position

(WP 0007).

With a test lead set, check for 22 to 28 VDC between pump house wire

harness wire 4086 (yellow) at pump house wire harness pump house heater 4-terminal

connector, terminal 2 and a known good ground.

If 22 to 28 VDC are present, replace pump house heater (WP 0469).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION