Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Acura MDX BaseFACTORY OEM SERVICE PROCEDURE
Front Power Transistor Test
WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. 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 4P connector from the front power transistor.
- Measure the resistance between the No. 3 and No. 4 terminals of the front power transistor. It should be about 1.5 kΞ©.
- If the resistance is within the specifications, go to step 4.
- If the resistance is not within the specifications, replace the front power transistor.NOTE: Also check the front blower motor. Front power transistor failure can be caused by a defective front blower motor.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.