Pilot V6-3.5L (2004)
Power Transistor HVAC: Testing and Inspection
Power Transistor Test
Power Transistor Test
1. Disconnect the 5P connector from the power transistor.
2. Measure the resistance between the No. 1 and No. 4 terminals of the power transistor. It should be about 1.4 - 1.5 kOhm.
-
If the resistance is within the specifications, go to step 3.
-
If the resistance is not within the specifications, replace the power transistor.
3. Carefully release the lock tab on the No. 3 terminal (ORN/BLK) (A) in the 5P connector, then remove the terminal and insulate it from body
ground.
4. Reconnect the 5P connector to the power transistor.
5. Supply 12 volts to the No. 3 cavity with a jumper wire.
6. Turn the ignition switch ON (II), and check that the blower motor runs.
-
If the blower motor does not run, go to step 7.
-
If the blower motor runs, the power transistor is OK.
7. Disconnect the 5P connector from the power transistor.
8. Connect a jumper wire between No. 4 and No. 5 terminals.
-
If the blower motor runs, replace the power transistor.
-
If the blower motor does not run, go to blower motor troubleshooting.