SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | Manual 4-cyl. injection engine (4 valves), mechanics | Exhaust system | Exhaust system components: removal and installation | Catalytic converter checking (engine code AUB)

Test sequence

–	Connect fault reader -V.A.G 1551- (-V.A.G 1552-) and with ignition switched on, select engine electronics control unit with the “Address word” 01: → Vehicle diagnosis, testing and information system VAS 5051

–	Interrogate fault memory. Repair faults as necessary and then erase fault memory. → Vehicle diagnosis, testing and information system VAS 5051

–

Then:

t	Leave fault reader -V.A.G 1551- connected.

Indicated on display:

–	Press keys 0 and 4 for the function “Introduction of basic setting” and confirm entry with key Q.

Rapid data transfer                 HELP

Select function XX

Indicated on display:

–	Press keys 0, 4 and 6 for “Display group number 46” and confirm entry with Q key.

Basic setting

Input display group number XXX

Indicated on display: (1...4 = Display fields)

–	Set engine speed to 1500...3900 rpm using speed regulator -V.A.G 1788/10-.

–	Maintain engine speed at 1500...3900 rpm until the display in display zone 4 jumps from “Test OFF” to “Test ON”. The catalytic converter temperature in display zone 2 must be at least 300 °C min.

Note!

This process may take a few minutes.

–	Continue to maintain the engine speed at 1500...3900 rpm until the result of the function test is displayed in display zone 4. Specification: “Cat B1 OK”

If “Cat. B1 not OK” appears in display zone 4:

–	Remove the engine speed adjuster -V.A.G 1788/10- from accelerator pedal.

–	Press →-key.

System in basic setting      46        →

Indicated on display:

–	Press keys 0 and 6 for the “End output” function and confirm input with key Q.

–	Interrogate fault memory: → Vehicle diagnosis, testing and information system VAS 5051

–	Read readiness code: → Vehicle diagnosis, testing and information system VAS 5051

–	If the fault memory has been erased or the engine control unit separated from the permanent positive, the readiness code must be generated again. → Vehicle diagnosis, testing and information system VAS 5051

If the specification “Cat B1 OK” is obtained:

–	Remove the engine speed adjuster -V.A.G 1788/10- from accelerator pedal.

–	Press →-key.

Rapid data transfer                 HELP

Select function XX

Indicated on display:

–	Press keys 0 and 6 for the “End output” function and confirm input with key Q.

–	Switch off ignition.

Rapid data transfer                 HELP

Select function XX

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