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Figure 2-16.1. Arctic Heater Kit Wiring Diagram (Model B).
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TM-9-2320-279-20-1 5-Ton 6x6 M39 Series Trucks (Multifuel) Manual
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Figure 2-16.2. Arctic Heater Fault Codes (Model B).
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)
8. ARCTIC HEATER INDICATOR LIGHT DOES NOT ILLUMINATE (MODEL B) (CONT).
Step 2.
Remove left heater compartment cover (para 16-11). Check arctic heater indicator light by
cutting arctic heater harness blue/white wire at the arctic heater indicator light and
shorting the indicator light white wire to known good ground. Turn arctic heater switch on.
If arctic heater indicator light illuminates, repair or replace arctic heater harness
blue/white wire (para 20-3).
If arctic heater does not illuminate, replace arctic heater indicator light (para 20-3).
Step 3.
If problem has not been solved, notify the supervisor.
9. ARCTIC HEATER DIAGNOSTIC TROUBLESHOOTING (ORGANIZATIONAL LEVEL) (MODEL B).
NOTE
If the Fault Code Retrieval Device (FCRD) is not installed, the arctic heater indicator light
S
displays the diagnostic flash codes for the arctic heater. These flash codes are eight seconds
long and repeat after eight seconds.
The Fault Code Retrieval Device (FCRD) displays the last five faults that occur, with the
S
latest fault displayed with either "AF" or "F1". If more than one fault code is displayed,
troubleshoot the latest fault code first.
Step 1.
Using the Fault Code Retrieval Device (FCRD) or the arctic heater indicator light, turn on
arctic heater and determine which fault code is active from the list shown in figure 2-16.2.
If fault code 000 is displayed and the arctic heater does not operate, go to Step 2.
If a fault code other than 000 is displayed, go to the Step indicated in the list shown.
Change 7

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