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 388 of 1188

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

0070-22

DRAFT

0070

TFFT 04811

Step 36.

Put crew cab air conditioner/ heater control panel switch to off position (WP 0008).

Turn

battery disconnect switch to OFF position (WP 0007).

With a test lead set, check for

continuity across wire 1640 from body condenser wire harness crew cab air conditioner/

heater fresh air fan connector, terminal 2 to a known good ground.

a.

If continuity is present, replace crew cab air conditioner/heater fresh air

fan (WP 0203).

b.

If continuity is not present, repair wire 1640 in body condenser wire

harness if repairable (TM 9-2320-325-14&P), or replace body air

condenser wire harness (WP 0436).

Step 37.

Put crew cab air conditioner/ heater control panel switch to off position (WP 0008).

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

Remove crew cab air

conditioner/heater control box cover (WP 0201).

With a test lead set, check for

continuity across wire 4042 from body condenser wire harness crew cab air conditioner/

heater

fresh air fan connector, terminal 1 to crew cab air conditioner/heater relay

module block, crew cab air conditioner heater blower relay.

a.

If continuity is present, replace crew cab air conditioner/heater control

box (WP 0201).

b.

If continuity is not present, repair wire 4042 in body condenser wire

harness if repairable (TM 9-2320-325-14&P), or replace body air

condenser wire harness (WP 0436).

Step 38.

While operating crew cab air conditioner/heater (WP 0008), check if crew cab air

conditioner/heater fresh air fan operates.

If crew cab air conditioner/heater fresh air fan does not operate, go to

Step 42.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION