SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4-cyl. injection engine, (5-valve) | Mixture preparation system, electronic inj.,Gas | Components and functions

Throttle valve moduleJ338: checking

Throttle valve module -J338-: checking

Special tools and workshop equipment required

t	Manual multimeter -VAG 1526B-

t	Measuring tool set -VAG 1594C-

t	Tester -VAG 1598/31-

t	Current flow diagram

Components of the Throttle valve control unit -J338-:

t	Throttle valve control (electric accelerator control) -G186-

t	Angle sender -1- for throttle valve control (electric accelerator control) -G187-

t	Angle sender -2- for throttle valve control (electric accelerator control) -G188-

Note

Note: If the throttle valve control part is replaced, the new control part must without fail be adapted to the engine control unit → Vehicle diagnosis, testing and information system VAS 5051.

Test requirements

t	Throttle neither damaged nor dirty

Test sequence

–	Pull 6-pin connector off throttle valve control unit.

–	Measure operating resistance of throttle valve between the following contacts:

If specification is not attained:

–	Replace the Throttle valve control unit -J338-.

If the specified value is achieved:

–	Check voltage supply of throttle valve control part and wiring to control unit.

If there are no faults in the voltage supply or wiring:

–	Replace engine control unit: → Vehicle diagnosis, testing and information system VAS 5051.

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