Jetta Sedan L5-2.5L (BGP) (2005)
If indication jumps to approx. 140° C:
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End of diagnosis and switch ignition off.
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Replace the Intake Air Temperature (IAT) Sensor (G42)24 Removal and Installation.
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 of 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 Adapter Cable (121 Pin) (VAG1598/31)
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) (J220). Refer to --> [ Engine Control Module, Replacing ] .