SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | Monomotronic injection and ignition system | Mixture preparation system, electronic inj.,Gas | Components and functions: verification

Throttle actuator: verification

Checking function

Function check → Chapter, Actuator diagnostics

Activation: verification

Special tools and workshop equipment required

t	Hand multimeter -V.A.G 1526 A- or multimeter -V.A.G 1715-

t	Diode test lamp -V.A.G 1527 B-

t	Auxiliary measuring set -V.A.G 1594 C-

t	Electric circuits flow diagram

Test conditions

l	Fault reader -V.A.G 1551- (-V.A.G 1552-) connected

l	Ignition OFF

Checking process

–	Extract the connection -1- from the throttle actuator -V60--2-.

–	Connect the diode lamp -V.A.G 1527 B- using the -V.A.G 1594 C- auxiliary cables connected to the pins 1 + 6 of the connector.

–	Join the pins 4+5 using the auxiliary cables -V.A.G 1594 C-.

–	Connect the ignition and repeat the actuator diagnosis until the throttle actuator is activated.

The indicator diode should be on.

–	Open the throttle a little and reclose it.

Both diodes should light alternatively

Note

If the throttle is open too much, remove the auxiliary cable connections to the pins 4+5 and then reconnect them to repeat the test.

–	Run the actuator test until its finished.

–	Disconnect the ignition and connect the connector.

–	Interrogate fault memory → Chapter

Verify the resistances

Test conditions

l	Ignition OFF

Checking process

–	Remove the air inlet duct.

–	Extract the connection -1- from the throttle actuator -2-.

–	Verify the resistance values on the throttle actuator pins using the multimeter and the auxiliary cables of the -V.A.G 1594 C-.

If the specifications are not reached between the pins 4+5:

–	Verification of the idle switch → Chapter

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