CIRCUIT BREAKER OPENS (MODEL A).

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).

Table 2-9.

Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ARCTIC HEATER KIT (CONT)

5. CIRCUIT BREAKER OPENS (MODEL A).

Step 1.

Check arctic heater kit installation for damaged or loose wiring. Remove heater

compartment cover (para 20-2).

Tighten loose connections, repair or replace damaged wiring.

Step 2.

Check for defective arctic heater starter cable. Test resistance between each end of cable

wires.

If any wire tested shows more than zero ohms, replace cable.

Step 3.

Replace circuit breaker No. 4 (para 7-43). Restart arctic heater.

If circuit breaker opens, replace arctic heater.

Step 4.

If problem has not been solved, notify the supervisor.

6. ARCTIC HEATER FAULT CODE RETRIEVAL DEVICE (FCRD) OPERATION (MODEL B).

a. Introduction.

The Fault Code Retrieval Device (FCRD) is used to troubleshoot and isolate component

failures in the arctic heater (Model B) system.

The Fault Code Retrieval Device (FCRD) reads, displays, and deletes fault codes stored in

the arctic engine heater control unit. The FCRD saves up to 5 fault codes, stored in the

arctic engine heater electronic control unit memory, labeled F1 to F5. The latest fault code

recorded is labeled F1.

The current or present fault code is labeled "AF" and is always stored in the F1 memory

location. Previous fault codes are transferred to memory locations F2 to F5.

Refer to MALFUNCTION 9, ARCTIC HEATER DIAGNOSTIC TROUBLESHOOTING to

troubleshoot diagnostic codes for the arctic heater (Model B).

Change 7