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HAC-196 < DTC/CIRCUIT DIAGNOSIS > [MANUAL AIR CONDITIONING] B24A4 INTAKE SENSOR Is the inspection result normal? YES >> GO TO 6. NO >> GO TO 2. 2. CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR OPEN 1. Turn ignition switch OFF. 2. Disconnect A/C amp. connector. 3. Check continuity between intake sensor 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 SENSOR GROUND CIRCUIT FOR OPEN 1. Check continuity between intake sensor harness connector and A/C amp harness connector. Is the inspection result normal? YES >> GO TO 4. NO >> Repair harness or connector. 4. CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT 1. Check continuity between intake sensor harness connector and ground. 2. Check voltage between intake harness connector and ground + − Condition Voltage A/C amp. Connector Terminal M50 21 Ground Sensor detection − 20 ° C ( − 4 ° F) 4.41 V − 10 ° C (14 ° F) 4.09 V 0 ° C (32 ° F) 3.68 V 10 ° C (50 ° F) 3.21 V 20 ° C (68 ° F) 2.71 V 25 ° C (77 ° F) 2.47 V 30 ° C (86 ° F) 2.23 V 40 ° C (104 ° F) 1.80 V Intake sensor A/C amp. Continuity Connector Terminal Connector Terminal M389 1 M50 21 Existed Intake sensor A/C amp. Continuity Connector Terminal Connector Terminal M389 2 M50 18 Existed Intake sensor — Continuity Connector Terminal M389 1 Ground Not existed + − Voltage Intake sensor Connector Terminal M389 1 Ground 0 V |