GTI L4-2.0L Turbo (BPY) (2007)
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Using a multimeter, check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 electrical harness connector terminal 2
to the Motronic Engine Control Module (ECM) J623 electrical harness connector T94 terminal 7 for an open circuit according to the wiring
diagram.
Oxygen Sensor (O2S) Behind
Motronic Engine Control Module (ECM) J623
Three Way Catalytic Converter
electrical connector T94
(TWC) G130 electrical harness
terminal or test box socket
connector terminal
2
7
Specified value: 1.5 Ohms max.
If the specification was not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
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Check the electrical harness connector for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
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Replace the Motronic Engine Control Module (ECM) J623.
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Install the right vehicle floor cover.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 03: Interrogating Fault Memory
2. If necessary, erase the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 04: Reset/Delete
Diagnostic Data
3. If the DTC memory was erased, generate readiness code.
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End of diagnosis.