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 778 of 1452

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

0183-2

DRAFT

0183

TFFT4609

NOTE

Installing jumperwire in place of relay 17 across terminal 3 wire 2852 and terminal 4 wire

1435 on cab power distribution block prevents having to start and stop vehicle engine

during testing.

Leave jumperwire in place throughout testing.

Step 1.

Open driver side discharge drain valve door (WP 0010).

Disconnect pump house wire

harness pump house diagnostic module connector.

Install jumperwire across wire 2852

and wire 4086 in pump house wire harness pump house diagnostic module connector,

terminal A and terminal B.

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

Check if pump house heater operates.

If rear compartment heater does not operate, troubleshoot Pump House

Heater Does Not Operate Properly (WP 0182).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION