Power Transistor HVAC: Testing and Inspection

1. Disconnect the 3P connector from the power transistor.
2. Pull out the No.2 (ORN) terminal from the connector.




3. Connect a 1.2 - 3.4 watt bulb as shown, then reconnect the 3P connector to the power transistor.
4. Turn the ignition switch ON (II), and check that the blower motor runs.

CAUTION:
- To avoid a loose or disconnected terminal, be careful not to damage the locking tab when disconnecting and connecting the terminal.
- Insulate the No.2 (ORN) terminal from the body until the testing is completed.