TT Roadster L4-2.0L Turbo (BWA) (2009)
If indication jumps to approx. 140° C:
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End diagnosis and switch ignition off.
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Replace the Intake Air Temperature (IAT) Sensor ( G42).
If indication remains at approx. -40° C or -46° C:
°Testing if display approx. 140 C:
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Disconnect the Intake Air Temperature (IAT) Sensor (G42) electrical harness connector - arrow -.
If indication jumps to approx. -40° C or -46° C:
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End diagnosis and switch ignition off.
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Replace the Intake Air Temperature (IAT) Sensor ( G42 ).
If the indication remains at approx. 140° C:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box. Refer to 2.0 Liter 4-Cyl. 4V Turbo Fuel Injection & Ignition, Engine Code(s): BWA. Repair Group 24.
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: Engine Control Module/Testing and Inspection/Engine Control