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 808 of 1452

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

0184-10

DRAFT

0184

TFFT04736

Step 22.

Shut water pump engine off (WP 0021).

Turn vehicle engine off (TM 9-2320-347-10).

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

Open water tank heater

control box (WP 0301). Open rear compartment heater diagnostic module (WP 0470).

Check for continuity across white wire with black stripe from front water tank heater

relay terminal, to FRONT TANK HEATER LIGHT terminal.

If continuity is not present, replace rear compartment heater diagnostic

module power cord (WP 0361).

Step 23.

Check for continuity across blue wire from front water tank heater contactor terminal 2,

to FRONT TANK HEATER LIGHT terminal.

a.

If continuity is present, replace front tank heater light (WP 0470).

b.

If continuity is not present, replace rear compartment heater diagnostic

module power cord (WP 0361).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION