Passat L4-1.8L Turbo (AWM) (2004)
If no malfunctions are found in wire:
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Measure resistance at Intake Air Temperature (IAT) Sensor -G42-.
Range A displays resistance values for the temperature range of 0..0.50 degrees C, range B displays resistance values for the temperature range of
50..0.100 degrees C.
Read-out examples:
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30 degrees C is in range A and corresponds to a resistance of 1.5 to 2.0 kohms
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80 degrees C is in range B and corresponds to a resistance of 275 to 375 ohms
If specified value is not obtained:
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Replace Intake Air Temperature (IAT) Sensor -G42-:
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase
Diagnostic Data
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Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes
If no malfunctions are detected in the wires and the resistance values are OK:
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Replace Motronic Engine Control Module (ECM) -J220-.