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HAC-222 < DTC/CIRCUIT DIAGNOSIS > [MANUAL AIR CONDITIONING] FRONT BLOWER MOTOR FRONT BLOWER MOTOR Diagnosis Procedure INFOID:0000000009652662 1. CHECK FUSE 1. Turn ignition switch OFF. 2. Check 15A fuse [No. 21 and 22, located in fuse block (J/B)]. PG-80, "Fuse, Connector and Terminal Arrangement" Is the inspection result normal? YES >> GO TO 2. NO >> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 2. CHECK FRONT BLOWER MOTOR POWER SUPPLY 1. Disconnect front blower motor connector. 2. Turn ignition switch ON. 3. Check voltage between front blower motor harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 6. 3. CHECK FRONT BLOWER MOTOR GROUND CIRCUIT FOR OPEN 1. Turn ignition switch OFF. 2. Check continuity between front blower motor harness connector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> Repair harness or connector. 4. CHECK FRONT BLOWER MOTOR CONTROL SIGNAL CIRCUIT FOR OPEN 1. Disconnect A/C amp. connector. 2. Check continuity between front blower 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 FRONT BLOWER MOTOR CONTROL SIGNAL 1. Reconnect front blower motor connector and A/C amp. connector. 2. Turn ignition switch ON. 3. Operate MODE switch (front A/C control) to set air outlet of front air conditioning to VENT. 4. Change front fan speed from Lo to Hi, and check duty ratios between front blower motor harness connec- + − Voltage Front blower motor Connector Terminal M140 3 Ground 11 – 14 V Front blower motor — Continuity Connector Terminal M140 1 Ground Existed Front blower motor A/C amp. Continuity Connector Terminal Connector Terminal M140 2 M49 10 Existed |