Service & Repair Manual

24-114
Check oxygen sensor wires for Oxygen
Sensor (O2S) 2 Behind Three Way Catalytic
Converter (TWC) -G131-.
Component location of harness connectors
Overview of component locations, page Page
24-5
- Disconnect brown 4-pin harness connector 2 to
Oxygen Sensor (O2S) 2 Behind Three Way
Catalytic Converter (TWC) -G131-.
- Connect VAG1598/31 test box at wiring harness
to ECM, do not connect ECM Page 24-17 .
- Check the following wire connections for open circuit.
Harness connector
Terminal
VAG1598/31 test box
Socket
3 10
4 11
- Repair open circuit if necessary.
- Check wires to each other for short circuit.
Harness connector
Terminal
VAG1598/31 test box
Socket
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