Beetle L4-2.0L (AEG) (2000)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor Aging, Check
Oxygen Sensor Aging, Check
Bank 1 Oxygen sensor 1
Special tools, workshop equipment, testers, measuring instruments and auxiliary items required
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VAG 1551/1552 Scan Tool using VAG 1551/3 Adaptor cable
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VAG 1788/10 Engine speed adjuster (or second technician)
Requirements
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Engine Coolant Temperature must be 85 °C minimum Display group 04, Display field 3.
Functional check
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Connect VAG 1551/1552 Scan Tool. Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks", See: Computers and Control
Systems/Testing and Inspection
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Start engine and let idle
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Press 0 and 1 buttons to select "Engine Electronics" address word 01.
Indicated on display (example only)
06A906018AB Motronic M5.9.2 HS V06 ->
Coding 00000
WSC 00000
-
Press -> button.
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press 0 and 4 buttons to select Function 04: "Basic setting"
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Press Q button to enter input.
Indicated on display
Basic setting
Input Display group number XXX
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Press 0, 3 and 4 buttons to select "Display group 34."
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Press Q button to enter input.
Indicated on display (1 to 4 = Display fields)
System in Basic setting 34
->
1
2
3
4
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Increase engine speed between 2200 and 2800 RPM and check specifications for Oxygen sensor aging before Three Way Catalyst (Display field
1 to 4).
NOTE: To ensure that the exhaust gas temperature is within specification range during the test, the test RPM must be held for at least 1 minute.
Observe the Oxygen sensor control status in Display field 4.