FAULT CODE 043, 047 OR 048: SHORT CIRCUIT AT EXTERNAL COMPONENT, FUEL METERING PUMP SHORT CIRCUIT OR FUEL METERING PUMP OPEN CIRCUIT

TM 9-2320-364-34-1

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

7. FAULT CODE 043, 047 OR 048: SHORT CIRCUIT AT EXTERNAL COMPONENT,

FUEL METERING PUMP SHORT CIRCUIT OR FUEL METERING PUMP OPEN

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 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 2-766.47

Arctic heater fuel metering pump

wires checked at unit level.

REASON FOR QUESTION

Arctic heater fuel metering pump

check at unit level.

If arctic heater operates nor-

mally after arctic heater control

POSSIBLE PROBLEMS

Does arctic heater operate

unit is replaced, fault has been

normally after replacing arctic

corrected.

heater control unit?

Arctic heater control unit faulty.

If arctic heater indicator light

flashes or fault code retrieval de-

vice (FCRD) displays fault code

043, 047 or 048, fault not corrected,

notify supervisor.

If arctic heater indicator light

flashes or fault code retrieval de-

vice (FCRD) displays fault code

other than 037, 042 or 059, trouble-

shoot fault code displayed (TM

9-2320-364-20).

YES

Fault corrected.

122

2-46C