HEATER MOTOR DOES NOT WORK

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

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