Volkswagen Golf / Golf GTI / Jetta. Manual — part 223

24-146

Check basic voltage of Oxygen
Sensor (O2S) Behind Three Way
Catalytic Converter (TWC) -G130-

- Remove protective cover (arrows)

and disconnect 4-pin connector
(black) -1- to Oxygen Sensor
(O2S) Behind Three Way
Catalytic Converter (TWC) -G130-
.

If the specification is obtained:

- Connect multimeter to measure

voltage at terminals 3 and 4
(connector to ECM) using adapter
cables from VAG 1594.

- Start engine and measure basic

voltage.

Specification: 0.400 to 0.500 V

- Switch off ignition.

- Replace Oxygen Sensor (O2S)

Behind Three Way Catalytic
Converter (TWC) -G130-

Page

24-17

, item 18 .

Functions, checking

24-147

- Check DTC memory, repair malfunctions if

necessary and then erase DTC memory

Page

01-23

.

- Erase learned values and adapt Motronic

Engine Control Module (ECM) -J220- again

Page 24-182

.

- Read readiness code

Page 01-146

. If DTC

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

Page 01-149

.

If the specification is not obtained:

- Check Oxygen Sensor (O2S) wiring of Oxygen

Sensor (O2S) Behind Three Way Catalytic
Converter (TWC) -G130-

Page 24-148

.

Functions, checking

24-148

Checking wiring for Oxygen
Sensor (O2S) Behind Three Way
Catalytic Converter (TWC) -G130-

- Remove wiper arms and cowl

panel:

Repair Manual, Electrical

Equipment; Repair Group 92

- Connect VAG 1598/31 test box to

control module wiring harness.
Engine Control Module (ECM) -
J220- remains disconnected.

- Remove protective cover (arrows)

and disconnect 4-pin connector
(black) -1- to Oxygen Sensor
(O2S) Behind Three Way
Catalytic Converter (TWC) -G130-
.

Functions, checking

24-149

If no wiring malfunction is detected:

- Check wiring for open circuit

between test box and 4-pin
connector (to control module)
referring to Electrical Wiring
Diagrams.

Terminal 3 and socket 68

Terminal 4 and socket 69

Wire resistance: max. 1.5

- Additionally check wires all for

short to one another.

Specification:

- Replace Motronic Engine Control

Module (ECM) -J220-

Page 24-

173

.

- Check DTC memory, repair

malfunctions if necessary and
then erase DTC memory

Page

01-23

.

- Erase learned values and adapt

Motronic Engine Control Module
(ECM) -J220- again

Page 24-

182

.

- Read readiness code

Page 01-

146

. If DTC memory has been

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

Page

01-149

.

Functions, checking