TESTING TPS 2005 Mercruiser 5.0 Bravo OW344212

[sessasails]

How do I test the TPS on the motor. I am guessing there should be a smooth sweep on the analog meter, but there are 3 pins on the sensor, and I do not know which 2 pins to use. Thank you

 

[alldodge]

Gray = 5V power
Black/Pink = 5V ground
Blue/Orange = B20 PCM

Note the Ground is not Battery ground but 5V ground

Use a digital multimeter and connect to Pin B20 or Blue/Orange wire. Ignition ON and watch voltage reading