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 931 of 1188

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

0114-15

DRAFT

0114

TFFT03461

Step 20.

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

Disconnect cab pump

control wire harness PUMP COOLER switch connector.

Check for continuity across

wire 4037 (orange) from cab pump control wire harness PUMP COOLER switch

connector, terminal 6 to cab power distribution wire harness relay 2 connector,

terminal 1.

If there is no continuity, go to Step 23.

Step 21.

Check for continuity across cab power distribution wire harness wire 1640 (black) from

relay 2 connector, terminal 2 to a known good ground.

If there is no continuity, replace cab power distribution wire harness and

block (WP 0441).

Step 22.

Check for continuity across cab power distribution wire harness wire 4037 (orange)

from relay 2 connector, terminal 1 to relay 2 connector, terminal 5.

a.

If there is continuity, replace relay 2 (WP 0402).

b.

If there is no continuity, replace cab power distribution wire harness

and block (WP 0441).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION