Speed Sensor: Previa

Connect the positive lead from battery to terminal 3 and negative lead to terminal 2. See Figure. Connect positive lead from tester to terminal 3 and negative lead to terminal 1. Revolve shaft. Check that voltage changes from less than 2V to 11V or more as shaft is rotated. Voltage should change 4 times per revolution of the shaft. If voltage does not change as specified, replace speed sensor.