FAULT CODE 012, 013, 014 OR 015: OVERHEATING, EXCESSIVE TEMPERATURE AT FLAME SENSOR, POSSIBLE OVERHEATING DETECTED OR TOO MANY OVERHEATS. (Cont) -726250863

TM 9-2320-364-34-1

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical circuits, a

direct short may result. Damage to equipment, injury or death to personnel may occur.

NOTE

Arctic heater temperature sensor resistance is between 650 ohms at -13_F (-25_C) and 1000 ohms at 77_F (25_C).

CONTINUITY TEST

(1) Ensure engine coolant temperature is

between -13_ and 77_F (- 25_ and 25_C).

(2) Remove cover from arctic heater

(TM 9-2320-364-20).

(3) Disconnect arctic heater unit harness

connector from arctic heater control unit

(TM 9-2320-364-20).

(4) Remove three screws and arctic

heater control unit (Para 18-2.2).

(5) Connect positive (+) lead to yellow wire

at arctic heater internal harness

connector, terminal 14.

(6) Connect negative (-) lead to yellow wire at

arctic heater internal harness connector,

terminal (18).

(7) Is resistance measured across arctic

heater temperature sensor between 650

and 1000 ohms, at room temperature?

(a) If resistance reading is not between

650 and 1000 ohms at room

temperature, replace arctic heater

temperature sensor (Para 18-2.2).

(b) If resistance reading is between 650

and 1000 ohms at room temperature,

go to Step 2 of this Fault.

2-779 2-13