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MTC-38 TROUBLE DIAGNOSIS 3. CHECK BLOWER MOTOR POWER SUPPLY CIRCUIT 1. Disconnect blower motor harness connector. 2. Check voltage between blower motor harness connector M62 Does battery voltage exist? Yes >> GO TO 4. No >> Check the following. ● If NG, repair harness or connector. – Harness for open between blower motor and fuse – Harness connectors M27 and M62 4. CHECK BLOWER MOTOR GROUND CIRCUIT 1. Disconnect blower motor harness connector. 2. Turn fan control knob to 4-speed. 3. Check continuity between blower motor harness connector M62 OK or NG OK >> GO TO 5. NG >> Check the following. If NG, repair harness or connector. ● Harness for open between blower motor and ground. ● Harness connectors M57 and M62 5. CHECK BLOWER MOTOR 1. Disconnect blower motor harness connector. 2. Apply 12 volts to blower motor terminal 1 and ground to blower Does blower motor rotate? Yes >> Reconnect blower motor connector and go to "Trouble Diagnosis Procedure for Blower Motor" No >> Replace blower motor. AHA485A Continuity should exist. WJIA0281E AHA455A |