New Beetle Turbo S L4-1.8L Turbo (AWP) (2002)
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Perform resistance measurement on Intake Air Temperature (IAT) sensor -G42- terminals 1 (signal) and 2 (ground).
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Scale A shows resistance values for temperature range 0 to 50 °C and scale B the values for temperature range 50 to 100 °C.
Examples:
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30 °C is in range A and corresponds to a resistance of 1.5 to 2.0 kOhms
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80 °C is in range B and corresponds to a resistance of 275 to 375 Ohms
If the specification is not obtained:
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Replace Intake Air Temperature (IAT) sensor -G42-, item 26.
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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory, Checking and Erasing DTC Memory. See: Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes
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Read readiness code. If DTC memory has been erased or Motronic Engine Control Module (ECM) -J220- was disconnected from battery positive,
readiness code must be generated again.
See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If there is no malfunction in the wiring and the resistance measurement values are OK:
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Replace Motronic Engine Control Module (ECM) -J220-.
With Generic Scan Tool
Checking Intake Air Temperature (IAT) sensor
Recommended special tools and equipment
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VAG1526 multimeter or VAG1715 multimeter
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VAG1594 connector test kit
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Wiring diagram
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Chilling spray (commercially available)