Throttle Position Sensor

Ensure ignition is off. Disconnect electrical connector from Throttle Position (TP) sensor mounted on side of throttle body. Note terminal identification on TP sensor. See Fig 1.
Apply vacuum to throttle opener. Using ohmmeter, check resistance between specified terminals in relation to throttle position. See THROTTLE POSITION SENSOR RESISTANCE table. Replace components as necessary if resistance is not within specification.

Fig 1: Checking Throttle Position Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

THROTTLE POSITION SENSOR RESISTANCE ⁽¹⁾

Application Type

Clearance In. (mm)

Terminals Tested

Ohmmeter Reading

3.4L

Fully Closed

VTA & E2

200-5700

Fully Open

VTA & E2

2000-10,200

VC & E2

2500-5900

⁽¹⁾	Apply vacuum to throttle opener before checking TP sensor.