FAULT CODE 053, 054, 055 OR 056: FLAME CUTOUT IN BOOST MODE, FLAME CUTOUT IN HIGH MODE, FLAME CUTOUT IN MEDIUM MODE OR FLAME CUTOUT IN LOW MODE.

TM 9-2320-364-34-1

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

10. FAULT CODE 053, 054, 055 OR 056: FLAME CUTOUT IN BOOST

MODE, FLAME CUTOUT IN HIGH MODE, FLAME CUTOUT IN MEDIUM

MODE OR FLAME CUTOUT IN LOW MODE.

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

Continuity test.

Fuel level OK (checked at

on Page 2-766.69

STE/ICE #91.

operational level).

Arctic heater intake port

REASON FOR QUESTION

checks OK at unit level.

Arctic heater exhaust port and

If resistance reading is be-

exhaust tube checks OK at

Is resistance across arctic

tween 900 and 1100 ohms at

unit level.

heater flame sensor between

room temperature, arctic heater

Arctic heater fuel lines check

blower may be faulty. If not,

900 and 1100 ohms, at room

OK at unit level.

arctic heater flame sensor is

temperature?

Arctic heater fuel metering

faulty.

pump OK at unit level.

Arctic heater fuel system prime

check OK at unit level.

Replace arctic

heater flame sen-

POSSIBLE PROBLEMS

sor (Para 18-2.2).

Verify repair, go to

Arctic heater flame sensor

Step 2 of this

faulty.

Fault.

Arctic heater control unit faulty.

YES

Replace arctic

heater blower

(Para 18-2.2).

Verify repair, go to

Step 2 of this

Fault.

2-684