FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START SAFETY TIME EXCEEDED.

TM 9-2320-364-34-1

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

8. FAULT CODE 050 OR 052: TOO MANY NO START ATTEMPTS OR NO START

SAFETY TIME EXCEEDED.

INITIAL SETUP

References

Tools and Special Tools

TM 9-2320-364-10

Tool Kit, General Mechanic's: Automotive

TM 9-2320-364-20

(Item 241, Appendix F)

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

Equipment Condition

Multimeter (Item 140, Appendix F)

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

Fault Code Retrieval Device (FCRD)

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

(Item 60.1, Appendix F)

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

NOTE

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

for Diagnosis of Arctic Heater Troubleshooting procedures (Para 2-17.1 Fault 1) (all

conditions) and you were referred here.

START

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING

Visual inspection.

on Page 2-766.49

Fuel level OK (checked at

operational level).

REASON FOR QUESTION

Arctic heater intake port checks

OK at unit level.

If system is not in lockout due

Arctic heater exhaust port and

to too many start attempts

exhaust tube checks OK at unit

(code 050), fuel metering pump

level.

was checked OK at second

Does arctic heater operate?

Arctic heater fuel lines check OK

level.

at unit level.

POSSIBLE PROBLEMS

Arctic heater fuel metering pump

faulty.

Arctic heater fault

Arctic heater fuel system not

code retrieval device

primed.

(FCRD) displays

Arctic heater flame sensor faulty.

fault code 050 or the

Arctic heater glow pin faulty.

arctic heater indica-

Arctic heater in lockout mode

tor light flashes flash

(fault code 050 active).

code shown. Go to

Step 2 of this Fault.

YES

Go to Step 6 of

this Fault.

2-484