Vehicle Speed Sensor

Vehicle speed sensor is mounted on transmission/transaxle and contains a 3-pin electrical connector. Connect voltmeter and battery voltage and ground on electrical terminals of vehicle speed sensor. See Fig 1, 182 or 183.
While rotating vehicle speed sensor shaft, ensure voltage changes from zero volts to at least 11 volts. Voltage should change 4 times per revolution of the shaft. Replace vehicle speed sensor if voltage does not change as specified. Remove test equipment.

Fig 1: Testing Vehicle Speed Sensor (4WD)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Testing Vehicle Speed Sensor (2WD With A/T)

Fig 3: Testing Vehicle Speed Sensor (2WD With M/T)