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
Pulser Test
- Reconnect the 6P connector to the window motor.
- Check for voltage between the terminals: There should be battery voltage between the No. 6 (+) and No. 4 (-) terminals when the ignition switch ON (II).
- If there is no battery voltage, check for an open in the wire.
- Check the voltage between terminals:
- Connect an analog voltmeter between the No. 5 (+) and No. 4 (-) terminals, and run the window motor at down or up. The voltmeter needle should move back and forth alternately (a digital voltmeter should show the average voltage between 0-5 V).
- Connect an analog voltmeter between the No. 3 (+) and No. 4 (-) terminals, and run the window motor at down or up. The voltmeter needle should move back and forth alternately (a digital voltmeter should show the average voltage between 0-5 V).
- If the voltmeter does not indicate as specified, replace the window 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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.