TM 5-3805-281-24-1
Group 15
Diagnostic Information
NOTE: Diagnostic charts are arranged from most
probable and simplest to verify, to least likely
more difficult to verify. Remember the following
steps when diagnosing a problem:
Step 1. Operational Check Out Procedure
Step 2. Diagnostic Charts
Step 3. Adjustments and/or Tests
Symptom
Problem
Solution
Air Conditioning System Does
A/C controller and relays 5 amp fuse
Replace fuse.
Not Operate
(F14)
Blower motor 20 amp fuse (F13)
Replace fuse, Group 9031-10.
Air conditioner relays (K24, K25,
Check air conditioner relays, Group
K26, K27, or K28)
9031-10.
A/C high and low pressure switch
Check high and low pressure switch,
(B27)
Group 9031-10.
A/C and heater blower motor (M6)
Check A/C and heater blower motor,
Group 9031-10.
9031-10.
9031
15
1
TX,9031,UU3149 1913AUG961/1