FAULT CODE 020 OR 021: GLOW PIN OPEN CIRCUIT OR GLOW PIN SHORT CIRCUIT. (Cont) -726250875

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 glow pin harness white and brown wires are connected with an insulator. Do not separate white and brown

wires at glow pin terminal.

CONTINUITY TEST

(1) Remove cover from arctic heater

(TM 9-2320-364-20).

(2) Disconnect arctic heater unit harness

connector from arctic heater control unit

(TM 9-2320-364-20).

(3) Remove three screws and arctic heater

control unit (Para 18-2.2).

(4) Remove nut and glow pin harness from

arctic heater glow pin terminal

(Para 18-2.2).

(5) Connect positive (+) lead to white wire at

arctic heater internal harness connector,

terminal 2.

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

arctic heater glow pin terminal.

(7) Is continuity measured across arctic

heater glow pin harness white wire?

(a) If there is no continuity, replace arctic

heater glow pin harness

(Para 18-2.2).

(b) If there is continuity, go to Step 2 of

this Fault.

2-7912-25