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 441 of 1452

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

0158-5

DRAFT

0158

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 5.

Turn off hydraulic generator (WP 0021).

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

Remove circuit breaker box cover (WP 0360).

Check for continuity across passenger

side extendable floodlight relay from line side to load side, with PASS FLOOD switch in

ON position (WP 0004).

If continuity is not present, go to Step 13.

Step 6.

Check for 22 to 28 VDC at wire 1147 (violet) from passenger side extendable floodlight

relay to a known good ground.

If 22 to 28 VDC are not present, go to Step 9.

Step 7.

Check if rear stowage compartment light illuminates (WP 0010).

If rear stowage compartment light does not illuminate (WP 0010),

troubleshoot Passenger Side and Rear Stowage Compartment Light(s) Do

Not Operate (WP 0174).

Step 8.

Turn battery disconnect switch to OFF (WP 0007).

Check for continuity across wire

2740 (black) from passenger side floodlight relay to a known good ground.

a.

If continuity is present, replace passenger extendable light

relay (WP 0373).

b.

If continuity is not present, repair wire 2740 in rear body wire harness if

repairable (TM 9-2320-325-14&P), or replace rear body wire

harness (WP 0461).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION