TT Roadster L4-2.0L Turbo (BPY) (2008)
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Switch the ignition off.
Specified value: Battery voltage.
If the specification was not obtained:
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Check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) ( G130) electrical harness connector terminal 1 to the Motronic
Engine Control Module (ECM) Power Supply Relay (J271) socket 2/87 an open circuit, a short circuit to each other, Battery (+), or Ground
(GND).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If the specification was obtained:
Checking Ground (GND) activation
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Engine Control Module (ECM) (J623). Refer to => [ replacing ] See: Powertrain Management/Computers and Control
Systems/Engine Control Module/Testing and Inspection/Engine Control Module (ECM) (J623).
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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 Engine Control Module (ECM) (J623) electrical harness connector T94 terminal 7 for resistance.