Throttle Position (TP) Sensor

THROTTLE POSITION (TP) SENSOR RESISTANCE ⁽¹⁾

Application

Ohms

Between Terminals No. 1 & 2

With .020" (.51 mm) Clearance At Stop Screw

0-500

With .031" (.79 mm) Clearance At Stop Screw

Infinity

Between Terminals No. 1 & 3

At Idle

300-2000

At Wide Open Throttle

⁽²⁾ 2000-6500

Between Terminals No. 1 & 4

3500-6500

⁽¹⁾	See Fig 1 for terminal identification.

⁽²⁾	There should be more than 2000 ohms difference between idle and wide open throttle resistance.

NOTE: See PIN VOLTAGE CHARTS article and appropriate wiring diagrams in WIRING DIAGRAMS article for PCM connector and wire terminal identification.

Fig 1: Identifying Throttle Position (TP) Sensor Terminals

Courtesy of GENERAL MOTORS CORP.