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BLOWER MOTOR HAC-81 < DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] C D E F G H J K L M A B HAC N O P Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 6. 3. CHECK BLOWER MOTOR GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Check continuity between blower motor harness connector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> Repair harness or connector. 4. CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND UNIFIED METER AND A/C AMP. 1. Disconnect unified meter and A/C amp. connector. 2. Check continuity between blower motor harness connector and unified meter and A/C amp. harness con- 3. Check continuity between blower motor harness connector and ground. Is the inspection result normal? YES >> GO TO 5. NO >> Repair harness or connector. 5. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL 1. Reconnect blower motor connector and unified meter and A/C amp. connector. 2. Turn ignition switch ON. 3. Set MODE switch to VENT position. (+) ( − ) Voltage Blower motor — Connector Terminal M109 1 Ground Battery voltage Blower motor — Continuity Connector Terminal M109 3 Ground Existed Blower motor Unified meter and A/C amp. Continuity Connector Terminal Connector Terminal M109 2 M66 38 Existed Blower motor — Continuity Connector Terminal M109 2 ground Not existed |