Volkswagen Golf / Golf GTI / Jetta. Manual — part 146

01-163

- Check Oxygen Sensor (O2S) control status after

Three Way Catalytic Converter (TWC) (display
zone 2): Specification: 111

Significance of figures in 3 digit number block

Page 01-217

.

Note:

The bits in display zone 2 will not be set to 1 until
the Three Way Catalytic Converter (TWC)
temperature rises above 380 C (

display

groups 34, display zone 2).

If the specification is not obtained:

- Press

button.

- Check Oxygen Sensor (O2S) heater of Oxygen

Sensor (O2S) after Three Way Catalytic
Converter (TWC)

Page 24-45

.

If the specification is obtained:

- Press

button.

Work step 10: Oxygen Sensor (O2S) aging
diagnosis of Oxygen Sensor (O2S) after
Three Way Catalytic Converter (TWC)

Rapid data transfer

HELP

Select function XX

Indicated on display:

- Press buttons -0- and -4- for function "Initiate

basic setting" and confirm entry with -Q- button.

Readiness code

01-164

Basic setting

Input display group number XXX

Indicated on display:

- Press buttons -0-, -4- and -3- for

"Display group number 43" and
confirm entry with -Q- button.

System in basic setting 43

1

2

3

4

Indicated on display: (1 to 4

display zones)

Note:

This process can take approx. 30
seconds.

- 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 and hold brake pedal

and accelerator until display in
display zone 4 jumps from "Test
OFF" to "Test ON", when
performing this test the Three
Way Catalytic Converter (TWC)
temperature in display zone 2
must be at least 380 C.

- Depress and hold brake pedal

and accelerator until display zone
4 displays specification "B1 P2
OK.".

- Release brake and accelerator

pedals.

Readiness code

01-165

If "B1 P2 n.OK." appears in display zone 4:

- Press

button.

- Check DTC memory, repair Diagnostic Trouble

Codes (DTCs) if necessary and then erase DTC
memory

Page 01-23

, DTC memory, checking

and erasing.

- Read readiness code

Page 01-146

. If the

DTC memory has been erased or the Motronic
Engine Control Module (ECM) -J220- was
disconnected from battery (B+) positive, the
readiness code must be generated again

Page 01-149

.

If no DTC is stored:

- Check aging of Oxygen Sensor (O2S) after

Three Way Catalytic Converter (TWC)

Page

24-154

.

If "B1 P2 OK." appears in display zone 4:

- Press -C- button.

Work step 11: Oxygen Sensor (O2S)
diagnosis after Three Way Catalytic
Converter (TWC) (operational readiness)

Basic setting

Input display group number XXX

Indicated on display:

- Press buttons -0-, -3- and -6- for "Display group

number 36" and confirm entry with -Q- button.

Readiness code

01-166

System in basic setting 36

1

2

Indicated on display: (1...2

display

zones)

If the diagnosis is initiated by the
Motronic Engine Control Module
(ECM) -J220- the display in display
zone 2 jumps from "Test OFF" to
"Test ON".

Note:

This process can take approx. 30
seconds.

If "B1 P2 n.OK." appears in display
zone 4:

- Leave engine running at idle until

display zone 2 shows
specification "B1 P2 OK.".

- Press

button.

- Check DTC memory, repair

Diagnostic Trouble Codes (DTCs)
if necessary and then erase DTC
memory

Page 01-23

, DTC

memory, checking and erasing.

- Read readiness code

Page 01-

146

. If the DTC memory has

been erased or the Motronic
Engine Control Module (ECM) -
J220- was disconnected from
battery (B+) positive, the
readiness code must be
generated again

Page 01-149

.

Readiness code