TM 5-3805-262-203-24. ACCESSORIES TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION8. DEFROSTER MOTOR DOES NOT OPERATE (Cont).S t e p 8 . ( C o n t ).b. If 24 volts obtained, turn ignition key switch to off position.Remove defroster motor (page 10-52) and perform continuity checkof motor and resistor (page 10-55). If continuity not obtained,r e p l a c e d e f e c t i v e p a r t.9. BOTH REAR DEFOGGER FANS DO NOT OPERATE.Step 1.Turn ignition key switch to on position.Turn FRONT WIPER switch to H position.Windshield wiper should operate.a. If windshield wiper does not operate, go to step 2 below.b. If windshield wiper operates, go to step 5 below.Step 2.Press 5 ampere circuit breaker located on right instrument panel.Check if windshield wiper and rear defogger fans operate.a. If both windshield wiper and defogger fans operate, problem wasmomentary short in circuit . If circuit breaker blows again,problem is in circuit associated with circuit breaker.Disconnect wires from circuit breaker, one at a time to isolateproblem to associated circuit: a u x i l i a r y s t e e r i n g , i n s t r u m e ntpanel cluster (located on left instrument panel), voltmeter, cabrelay solenoid, or electric fuel pump.b. If windshield wiper and defogger fans do not operate and circuitbreaker did not blow, go to step 3 below.3-173
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