FAULT CODE 090, 093, 094 OR 097: CONTROL UNIT DEFECTIVE (INTERNAL FAULT, RAM ERROR, EPROM FAULT OR POWER FAILURE).

TM 9-2320-364-34-1

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

13. FAULT CODE 090, 093, 094 OR 097: CONTROL UNIT DEFECTIVE (INTERNAL

FAULT, RAM ERROR, EPROM FAULT OR POWER FAILURE).

INITIAL SETUP

Tools and Special Tools

References

Tool Kit, General Mechanic's: Automotive

TM 9-2320-364-10

(Item 241, Appendix F)

TM 9-2320-364-20

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.

Nothing.

on Page 2-767

REASON FOR QUESTION

POSSIBLE PROBLEMS

If arctic heater operates nor-

Arctic heater control unit faulty.

mally after replacing arctic

Does arctic heater operate

heater control unit, fault has

normally after replacing arctic

been corrected.

heater control unit?

If arctic heater indicator light

flashes or fault code retrieval de-

vice (FCRD) displays fault code

090, 093, 094 or 097, fault not

corrected. Notify supervisor.

If arctic heater indicator light

flashes or fault code retrieval de-

vice (FCRD) displays fault code

other than 090, 093, 094 or 097,

troubleshoot fault code displayed

(TM 9-2320-364-20).

YES

Fault corrected.

2-848