SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4LV Injection and Ignition System | Mixture preparation system, electronic inj.,Gas | Function test | Post-catalyst lambda probe and control lambda posterior: testing

Test the basic voltage

–	Remove the 4-contacts connector (black) to the pre-catalyst lambda probe -G130--arrow-.

–	To test the voltage, connect the multimeter to connectors 3 + 4 (connector to the engine control unit), using the auxiliary leads of the -V.A.G. 1594 A-.

–	Switch on the ignition and test the basic voltage. Target value: 0.40...0.50 V

–	Switch off the ignition.

If the target value is reached:

–	Replace the post-catalyst lambda probe -G130-. → Rep. Gr.26

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