Speed Sensor

To check sensor with vehicle stationary, disconnect speedometer cable from transmission. Using a circuit tester, make sure there are 6 on-off pulses on 8R-C engine (4 on-off pulses on 2T-C engine) for each speedometer cable rotation. Speed sensor can also be checked while driving. With vehicle moving at 10 MPH, and using an oscilloscope, number of pulses should be 900 to 1150 per minute, 8R-C engine. On 2T-C engine number should be 600 to 766 per minute. If unable to obtain measured values, replace speedometer assembly.