Jetta Wagon L4-1.8L Turbo (AWP) (2005)
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Remove Intake Air Temperature (IAT) sensor. Attach connector again.
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Note intake air temperature value in display zone 4.
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Spray sensor with commercial chilling agent while observing temperature value. Temperature value must decrease.
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Press -> key.
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Press keys 0 and 6 for function "End output" and confirm entry with Q key.
Continuation of check when display reads approx. -48 degrees C
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Disconnect connector -1- from Intake Air Temperature (IAT) sensor -G42- -2-.
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Bridge connector contacts using auxiliary cables from V.A.G1594 and observe display.
If display jumps to approx. 143 degrees C:
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Press -> key.
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Press keys 0 and 6 for the function "End output" and confirm entry with Q key.
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Switch ignition off.
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Replace intake air temperature (IAT) sensor -G42-.
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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes/With Manufacturer's Scan
Tool/DTC Memory, Checking and Erasing (Functions 02 and 05)
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Read readiness code. If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must
be generated again.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If display remains at approx. -48 degrees C:
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Press -> key.
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Press keys 0 and 6 for the function "End output" and confirm entry with Q key.
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Switch ignition off.
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Check wiring using wiring diagram.
Continuation of check when display reads approx. 143 degrees C