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(Chapter 7) Potentiometer-position sensor tests TPS, EVP, APP, VAF etc
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This was the first time I have ever seen 12v on a potentiometer style throttle position sensor. The spec for this sensor is around .5v at idle at around 4v at wide open throttle and this Jeep was fixed at 12v all the time. Scan data was misleading as the TPS data parameter showed a constant 5v regardless of throttle angle. Also when performing signal circuit integrity type testing, you will now understand why we use a resistor instead of a jumper wire.
View More About This Video: P0123 TPS Voltage Higher than max limit - Jeep
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This is a preview I put together of my Chapter 7 lectures available on ScannerDanner Premium.
View More About This Video: Chapter 7 (Potentiometers) - an SD Premium preview
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In this video I’ll show you how to retrieve trouble codes from an OBD-I vehicle, a 1991 Eagle Talon (which is a Mitsubishi Eclipse), and how to test a throttle position sensor with a graphing multimeter.
View More About This Video: Hesitation and idle problems from a bad TPS (OBD1 Eclipse)
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How to perform a TPS sweep test using a digital multimeter and a scope.
View More About This Video: Throttle Position Sensor Test (voltmeter and scope)
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In this video I will be comparing the data speed of scan tool and a labscope using the throttle position sensor.
View More About This Video: Scan tool data graph vs Lab Scope waveform (should I buy a scope?)