Service & Repair Manual

24-90
Check oxygen sensor wires bank 1 for Heated
Oxygen Sensor (HO2S) 2 -G39-.
Component location of harness connectors
Overview of component locations, page Page
24-5
- Disconnect black 4-pin harness connector to
bank 1 Heated Oxygen Sensor (HO2S) -G39-.
- 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 51
4 70
- Repair open circuit if necessary.
- Check wires to each other for short circuit.
Harness connector
Terminal
VAG1598/31 test box
Socket
4 51
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