Throttle Position Sensor: Turbo

Ensure ignition is off. Disconnect electrical connector from Throttle Position (TP) sensor. TP sensor is located on throttle body and may also be referred to as main TP sensor. See Figure.
Disconnect vacuum hose and apply vacuum to throttle opener. See Fig 1. Note terminal identification on TP sensor. See Fig 1.
Insert specified thickness feeler gauge between throttle stop screw and throttle lever, and check resistance or continuity. See TP SENSOR RESISTANCE SPECIFICATIONS table. See Fig 1. Replace or adjust TP sensor if not within specification. For adjustment procedures, see appropriate ADJUSTMENTS article.

TP SENSOR RESISTANCE SPECIFICATIONS

Application Type

Clearance In. (mm)

Terminals Tested

Ohmmeter Reading

Turbo ⁽¹⁾

Fully Closed

VTA & E2

340-6300

.027 (.69)

IDL & E2

500 Or Less

.032 (.81)

IDL & E2

No Continuity

Fully Open

VTA & E2

2400-11,200

VC & E2

3100-7200

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

Fig 1: Testing TP Sensor (Turbo)