Throttle Valve Switches

Manual transmission-equipped vehicles use a closed throttle position (idle speed) switch and a wide open (full) throttle switch. Tiptronic (automatic) transmission-equipped vehicles use a closed throttle position (idle speed) switch and a throttle valve potentiometer. Potentiometer is used exclusively for transmission control.

THROTTLE VALVE SWITCH RESISTANCE

Application

Ohms

Closed Throttle Position (Idle Speed) Switch ⁽¹⁾

Throttle Valve Closed

Less Than 10

Throttle Valve Open ⁽²⁾

Infinite

Throttle Valve Potentiometer ⁽³⁾

Throttle Valve Closed (Idle)

0.5

Throttle Valve Open (Full Throttle)

4000

Wide Open (Full) Throttle Switch ⁽⁴⁾

Throttle Valve Closed

Infinite

Throttle Valve Open ⁽⁵⁾

Less Than 10

⁽¹⁾	Resistance is measured between terminals No. 1 and 2.

⁽²⁾	Throttle valve angle opening greater than one degree.

⁽³⁾	Check potentiometer resistance between terminal No. 2 (Green/Yellow wire) and terminal No. 3 (Brown wire).

⁽⁴⁾	Resistance is measured between terminals No. 2 and 3.

⁽⁵⁾	Throttle valve must be at least 2/3 open.