Jetta L4-1.8L Turbo (AWD) (2000)
Specification: 1 1 1
Significance of 3 digit number block in display zone 1:
If the specification is not obtained:
-
Check heated oxygen sensor before catalyst. See: Checking
If the specification is obtained:
-
Change to display group 32 as follows:
-
Press C key.
-
Press keys 0, 3 and 2 for "Display group number 32" and confirm entry with Q key.
Indicated on display: (1-4 = Display zones)
Read measured value block 32
->
1
2
3
4
-
Check Oxygen sensor control learned values at idling speed (additive) in display zone 1.
Specification: -10.0 - 10.0 %
-
Check Oxygen sensor control learned values at part load (multiplicative) in display zone 2.
Specification: -10.0 - 10.0 %
If the specification is not obtained:
Evaluating display group 32. Refer to "Scan Tool Testing/Measuring Value Blocks/Display Groups 30-49, 99, 107 (Oxygen Sensor Control)" See:
Testing and Inspection
If the specification is obtained:
-
Change to display group 33 as follows:
VAG 1551: Press key 3
VAG 1552: Press key up arrow
Indicated on display: (1-4 = Display zones)
Read measured value block 33
->
1
2
3
4
-
Observe Oxygen sensor control in display zone 1.
-
The display must fluctuate at least 2% in the range -10.0 - 10.0 %
-
Check Oxygen sensor voltage in display zone 2.
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The voltage must fluctuate at least 20 times per minute in range of 0 - 1.0 V.