Service & Repair Manual

24-112
Testing Oxygen Sensor Wires
Component location of harness connectors
Overview of component locations, page Page
24-5
- Disconnect green 4-pin harness connector 1 to
Oxygen Sensor (O2S) Behind Three Way
Catalytic Converter (TWC) -G130-.
- 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 68
4 69
- Repair open circuit if necessary.
- Check wires to each other for short circuit.
Harness connector
Terminal
VAG1598/31 test box
Socket
4 68
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