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TM9-2320-270-20-1
TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
76. HEATER MOTOR DOES NOT WORK - CONTINUED.
Step 7.
Go to circuit breaker (1) for defrost. Using multimeter set at 30 vdc, put red
probe on terminal for wire no. 082 (2) and black probe to good ground.
If meter reads voltage, put ignition switch in OFF position, close instru-
ment panel (page 2-244), and notify direct support maintenance.
Step 8.
Go to terminal for wire no. 174 (3) on circuit breaker (1). Using multimeter set
at 30 vdc, put red probe on terminal and black probe to good ground.
a. If meter reads voltage, put ignition switch in OFF position and replace
circuit breaker (page 4-304).
b. If meter does not read voltage, put ignition switch in OFF position,
close instrument panel (page 4-244), and notify direct support
maintenance.
TA239789
3-204

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