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HAC-276 < DTC/CIRCUIT DIAGNOSIS > [MANUAL HEATER ] B24B7 INTAKE DOOR MOTOR 1. Turn ignition switch OFF. 2. Disconnect A/C amp. connector. 3. Check continuity between intake door motor harness connector and A/C amp. harness connector. Is the inspection result normal? YES >> GO TO 3. NO >> Repair harness or connector. 3. CHECK INTAKE DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT Check continuity between intake door motor harness connector and ground. Is the inspection result normal? YES >> Replace A/C amp. Refer to HAC-295, "Removal and Installation" . NO >> Repair harness or connector. 4. CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN 1. Turn ignition switch OFF. 2. Disconnect A/C amp. connector. 3. Check continuity between intake door motor harness connector and A/C amp. harness connector. Is the inspection result normal? YES >> GO TO 5. NO >> Repair harness or connector. 5. CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT 1. Check continuity between intake door motor harness connector and ground. 2. Check voltage between intake door motor harness connector and ground. Intake door motor A/C amp. Continuity Connector Terminal Connector Terminal M386 2 M50 8 Existed Intake door motor — Continuity Connector Terminal M386 2 Ground Not existed Intake door motor A/C amp. Continuity Connector Terminal Connector Terminal M386 1 M50 11 Existed 3 12 4 27 6 28 Intake door motor — Continuity Connector Terminal M386 1 Ground Not existed 3 4 6 |