FAULT CODE 020 OR 021: GLOW PIN OPEN CIRCUIT OR GLOW PIN SHORT CIRCUIT.

TM 9-2320-364-34-1

2-17.1. ARCTIC HEATER (MODEL B) TROUBLESHOOTING (CONT).

4. FAULT CODE 020 OR 021: GLOW PIN OPEN CIRCUIT OR GLOW PIN

SHORT CIRCUIT.

INITIAL SETUP

References

TM 9-2320-364-10

Tools and Special Tools

TM 9-2320-364-20

Tool Kit, General Mechanic's: Automotive

(Item 241, Appendix F)

Equipment Condition

STE/ICE-R (optional) (Item 15, Appendix F)

Engine OFF, (TM 9-2320-364-10)

Multimeter (Item 140, Appendix F)

Parking brake applied, (TM 9-2320-364-10)

Fault Code Retrieval Device (FCRD)

Wheels chocked, (TM 9-2320-364-10)

(Item 60.1, Appendix F)

NOTE

The following steps should only be used if troubleshooting was started at First Chart

For Diagnosis of Arctic Heater Troubleshooting procedure (Para 2-17.1 Fault 1) (all

conditions) and you were referred here.

START

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING

on Page 2-766.25

Nothing.

Continuity test.

STE/ICE #91.

POSSIBLE PROBLEMS

REASON FOR QUESTION

Arctic heater glow pin harness

If continuity is not measured,

Is continuity measured across

white wire open.

arctic heater glow pin harness

arctic heater glow pin harness

Arctic heater glow pin harness

is faulty.

white wire?

brown wire open.

Arctic heater glow pin harness

wires shorted.

Arctic heater glow pin faulty.

Arctic heater control unit faulty.

Replace arctic

heater glow pin

harness (Para

18-22). Verify re-

pair, go to Step 5

of this Fault.

YES

2-240

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