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B257B, B257C AMBIENT SENSOR HAC-59 < DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING] C D E F G H J K L M A B HAC N O P YES >> GO TO 3. NO >> Repair harness or connector. 3. CHECK AMBIENT SENSOR Check ambient sensor. Refer to HAC-59, "Component Inspection" . Is the inspection result normal? YES >> Replace A/C auto amp. Refer to HAC-93, "Removal and Installation" NO >> Replace ambient sensor. Refer to HAC-94, "Removal and Installation" 4. CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR OPEN 1. Turn ignition switch OFF. 2. Disconnect A/C auto amp. connector. 3. Check continuity between ambient sensor harness connector and A/C auto amp. harness connector. Is the inspection result normal? YES >> GO TO 5. NO >> Repair harness or connector. 5. CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT FOR SHORT Check continuity between ambient sensor harness connector and ground. Is the inspection result normal? YES >> Replace A/C auto amp. Refer to HAC-93, "Removal and Installation" NO >> Repair harness or connector. Component Inspection INFOID:0000000012200047 1. CHECK AMBIENT SENSOR 1. Remove ambient sensor. Refer to HAC-94, "Removal and Installation" 2. Check resistance between ambient sensor terminals. Refer to applicable table for the normal value. Ambient sensor A/C auto amp. Continuity Connector Terminal Connector Terminal E53 1 M50 4 Existed Ambient sensor — Continuity Connector Terminal E53 1 Ground Not existed |