ARCTIC HEATER WIRING HARNESS TEST/REPAIR/REPLACEMENT

TM 10-3930-673-20-2

20-6. ARCTIC HEATER WIRING HARNESS TEST/REPAIR/REPLACEMENT

This Task Covers:

a. Test

c. Repair

b. Removal

d. Installation

INITIAL SETUP

Equipment Condition

Tools and Special Tools

Negative battery cable disconnected (Para 8-44)

Tool Kit, General Mechanic's: Automotive

Multimeter, Digital (Item 9, Appendix f)

Materials/Parts

Electrical tape (Item 39, Appendix C)

Tags (Item 38, Appendix C)

Tie wraps (Item 40, Appendix C)

Lockwasher

a. Test

NOTE

Failure of an electrical device to function is more likely due to a faulty switch or faulty device rather

than to a broken wire. Do not assume that a broken wire exists until related electrical device and

actuator have been checked.

(1)

Inspect wires for poor connections, cuts, or other defects.

(2)

Check wire continuity to determine if hidden breaks exist.

(a)

Connect multimeter leads to each end of wire.

(b)

An infinite resistance reading indicates a broken wire or a defective fuse. Replace fuse (Para 20-4), and

again check wire continuity.

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