Power Transistor Test
WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the passenger's dashboard undercover (see PASSENGER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION )
- Disconnect the 5P connector from the power transistor
- Measure the resistance between terminals No 1 and No 4 of the power transistor It should be about 1.5 kΩ
- If the resistance is within the specifications, go to step 4
- If the resistance is not within the specifications, replace the power transistor
NOTE: Also check the blower motor Power transistor failure can be caused by a defective blower motor - Reconnect the 5P connector to the power transistor
- Disconnect climate control unit connector A (32P)
- Connect climate control unit connector A (32P) terminals No 15 and No 28 with a jumper wire
- Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and check that the blower motor runs
- If the blower motor does not run, replace the power transistor
NOTE: A faulty blower motor can cause the power transistor to fail If the power transistor is replaced, also check the blower motor for binding, and replace it if necessary- If the blower motor runs, the power transistor is OK