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Home >> Subaru >> 1992 >> Legacy Sedan 2WD F4-2.2L SOHC >> Repair and Diagnosis >> Heating and Air Conditioning >> Blower Motor >> Testing and Inspection >> Circuit Components Check
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Circuit Components Check

1. CHECK HI RELAY





- Check circuit continuity between terminals by supplying 12 volts to coil side terminal of Hi relay.

2. CHECK BLOWER MOTOR OPERATION




1) Disconnect blower motor harness connector.
2) Confirm blower fan turns smoothly when approximately 12 volts are conducted to blower motor terminal.

3. CHECK FAN CONTROL AMP.

1) Connect fan control amp harness connector.
2) Ignition switch ON. Fan switch OFF.







3) Measure voltage of fan control amp. output signal.
4) Ignition switch OFF.
5) Disconnect fan control amp harness connector.







6) Check circuit continuity of fan control amp.

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