Volkswagen Golf 1999 Service Manual page 614

Readiness code
Rapid data transfer
Select function XX
Basic setting
Input display group number XXX
System in basic setting 34
1 2
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HELP
3 4
Work step 7: Oxygen Sensor
(O2S) aging diagnosis of Oxygen
Sensor (O2S) before Three Way
Catalytic Converter (TWC)
Indicated on display:
- Press buttons -0- and -4- for
function "Initiate basic setting"
and confirm entry with -Q- button.
Indicated on display:
- Press buttons -0-, -3- and -4- for
"Display group number 34" and
confirm entry with -Q- button.
Indicated on display: (1...4
zones)
- Depress brake pedal and hold.
- Depress accelerator down to wide
open throttle position.
Engine speed will be increased by
Motronic Engine Control Module
(ECM) -J220- to approx. 2300
rpm.
- Depress brake pedal and
accelerator down until display in
display zone 4 jumps from "Test
OFF" to "Test ON". When
performing this test Three Way
Catalytic Converter (TWC)
temperature in display zone 2
must be at least 380 C.
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12/2/2005