volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 2184 > < Emissions - MIL ON/DTC P0420/Cat. Converter Rattling|Page 2181
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Catalytic Converter: Testing and Inspection
With Manufacturer's Scan Tool

Three Way Catalyst, checking

Special tools and equipment
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VAG1551 Scan Tool

Note:  VAG1552 Scan Tool can be used instead of the VAG1551; however, the VAG1552 has no printer.

^

VAG1 551/3B Adapter cable

^

VAG1788/1 0 RPM adjuster (only for Engine code AEG)

Test sequence
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Connect VAG 1551/1552) Scan Tool.

Refer to Powertrain Management

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Start engine and let idle.

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Press 0 and 1 buttons to select Address Word 01: "engine electronics". Press Q button to confirm input.

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Press (arrow) button.

With Manufacturer's Scan Tool|Page 2184 > < Emissions - MIL ON/DTC P0420/Cat. Converter Rattling|Page 2181