Golf GL L4-2.0L (AZG) (2001)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor Behind Catalyst
Aging Check
Oxygen Sensor Aging, Oxygen Sensor After Catalyst, Checking
Special tools and equipment
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V.A.G 1551 scan tool or or 1552 scan tool with cable VAG 1551/3
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VAG 1788/10 Engine speed adjuster
Test conditions
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Coolant temperature must be at least 80°C, See display group 04, display zone 3.
Functional check
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Connect V.A.G 1551 scan tool ((VAG1552). Start engine and select "Address word" 01 of engine control module. When doing this the engine
must be running at idling speed. See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting
Indicated on display:
Rapid data transfer
HELP
Select function XX
-
Press keys 0 and 4 for the function "Introduction of basic setting" and confirm entry with Q key.
Indicated on display:
Basic setting
Input display group number XXX
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Press keys 0, 4 and 3 for "Display group number 43" and confirm entry with Q key.
Indicated on display: (1 to 4 = Display zones)
System in basic setting 43
->
1
2
3
4
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Adjust engine speed to approx. 2300 RPM using the VAG1788/10 RPM adjuster:
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Maintain engine speed at approx. 2300 RPM until indication in display field 4 jumps from
"Test OFF" to "Test ON".
The catalytic converter temperature in display field 2 must be at least 365°C.
-
Continue to maintain engine speed at approx. 2300 RPM until display field 4 indicates specified value "B1-S2 OK".
If the specifications are obtained: