Jetta L4-1.8L Turbo (AWP) (2004)
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Pull connector -1- off Intake Air Temperature (IAT) sensor (G42) -2-.
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Bridge connector contacts using aux. cables from VAG1594 and observe display.
If display jumps to approx. 143 °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,Checking and Erasing DTC Memory. Refer to
"Displaying and Reading Trouble Codes/With Manufacturer's Scan Tool/Erase DTC Memory (Function 05)" See: Testing and Inspection/Reading
and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes/With Manufacturer's Scan Tool/DTC Memory Checking and
Erasing/Erase DTC Memory (Function 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: Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/With Manufacturer's Scan Tool/Displaying and Creating
Readiness Codes/Readiness Code, Reading" See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Engine code AWP, Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/With Manufacturer's Scan Tool/Displaying and Creating
Readiness Codes/ Readiness Code, Generating" See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If display remains at approx. -48 °C:
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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.
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Switch ignition off.
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Check wiring using wiring diagram.
Continuation of check when display reads approx. 143 °C:
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Pull connector -1- off Intake Air Temperature (IAT) sensor (G42) -2-.