Examination
1. Disconnect the connector from the power transistor.
2. Measure the resistance between terminals "1" and "2".
Resistance - 1.5 kOhm ±5%
3. Disconnect contact (A) from terminal "4".
Caution: Be careful not to damage the contact.
5. Connect the battery to terminal "4" (+) as shown in the figure.
4. Turn the ignition switch to the "ON" position, make sure the heater fan is running.
If the heater fan does not work, replace the power transistor.
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