TM-5-4210-249-13-P-1

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 1 OF 4

TM-5-4210-249-13-P-1 - Page 459 of 1188

TM 5-4210-249-13&P-1

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DRAFT

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TFFT04439

Step 10.

Reconnect pump operator’s panel wire harness water pump engine ECU wire harness

connector to water pump engine ECU.

Disconnect pump operator’s panel wire harness

pressure governor 12-terminal wire harness connector.

Turn battery disconnect switch

to ON position (WP 0007).

Start water pump engine (WP 0022).

With a test lead set,

check for 5 VDC at wire 1966 from pressure governor 12-terminal wire harness

connector, terminal 1 to a known good ground.

If 5 VDC are not present, replace water pump engine electronic control

unit (WP 0226).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION