Today we'll be testing and replacing P0720 REVOLUTION SENSOR. Also known as - Vehicle Speed Sensor A/T. Don't get this confused with P0500 Vehicle Speed Sensor. P0500 deals with speedometer reading on your dashboard. P0720 deals with Automatic Transmission Control Unit / Computer.
The revolution sensor detects the revolution of the idler gear and emits a pulse signal. This signal is sent to the A/T control unit (computer) which converts it into vehicle speed.
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P0720 - A/T control unit does not receive the proper voltage signal from the sensor.
Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.
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This was performed on a 1997 Nissan Maxima. Check with your vehicle's repair manual for testing parameters.
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