Golf GL L4-2.0L (AZG) (2001)
Read measuring value block 30
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1
2
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Check Oxygen sensor control status before catalyst (display zone 1):
Specification: 111
Significance of 3 digit number block in display zone 1:
NOTE: The first position of the 3 digit number block fluctuates between 0 and 1 (Oxygen sensor heating on and off).
If the specification is not obtained:
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Check the Oxygen sensor heating before catalyst. See: Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Oxygen Sensor Heater For Oxygen Sensor Before Three Way Catalytic Converter (TWC), Checking
If the specification is obtained:
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Change to display group 32 as follows:
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Press C key.
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Press keys 0, 3 and 2 for "Display group number 32" and confirm entry with Q key.
Indicated on display: (1 to 2 = Display zones)
Read measuring value block 32
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1
2
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Check Oxygen sensor learned values at idling speed (additive) in display zone 1.
Specification: -10.0 to 10.0%
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Check Oxygen sensor learned values at part load (multiplicative) in display zone 2.
Specification: -10.0 to 10.0%
If the specification is not obtained:
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Evaluating display group 32. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Manufacturer's
Scan Tool/Read Measuring Value Blocks (Function 08)/Evaluating Measuring Value Blocks/Display Groups 30-49, 99, 107 (Oxygen Sensor
Control)
If the specification is obtained:
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Change to display group 33 as follows:
V.A.G 1551: Press key 3
VAG 1552: Press key (up arrow)
Indicated on display: (1 to 2 = Display zones)
Read measuring value block 33
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1
2