ARCTIC HEATER DIAGNOSTIC TROUBLESHOOTING (ORGANIZATIONAL LEVEL) (MODEL B)-continued

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

Table 2-9.

Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ARCTIC HEATER KIT

9. ARCTIC HEATER DIAGNOSTIC TROUBLESHOOTING (ORGANIZATIONAL LEVEL) (MODEL B)

(CONT).

NOTE

Steps (20) through (25) are for fault codes 043, 047, or 048.

Step 20.

Disconnect arctic heater fuel metering pump harness connector (para 20-3).

Step 21.

Disconnect arctic heater harness connector (para 20-3).

Step 22.

Perform continuity check on arctic heater fuel metering pump harness wires. Connect

probes to arctic heater harness connector terminals, C3 and C4. Check for continuity.

If continuity is measured, repair or replace arctic heater fuel metering pump

harness wires and go to Step 42.

Step 23.

Perform continuity check on arctic heater fuel metering pump harness wires. Connect

jumper across fuel metering pump connector terminals and connect probes to arctic heater

harness connector terminals, C3 and C4.

If continuity is not measured, repair or replace arctic heater fuel metering pump

wires and go to Step 42.

Step 24.

Perform resistance check on arctic heater fuel metering pump. Connect probes across

arctic heater fuel metering pump connector terminals. Resistance reading should be 20

ohms (nominal).

If resistance reading of 20 ohms (nominal) is present, go to Step 44.

If resistance reading of 20 ohms (nominal) is not present, replace arctic heater fuel

metering pump (para 20-3).

Step 25.

Go to Step 42.

Change 7

2-268.5