New Beetle L4-2.0L (AVH) (2005)
Intake Air Temperature Sensor: Testing and Inspection
Intake Air Temperature (IAT) Sensor, Checking
NOTE:
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When servicing terminals in the harness connector for the Mass Air Flow (MAF) sensor or the Intake Air Temperature (IAT) sensor, use only
gold-plated terminals.
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The Intake Air Temperature (IAT) sensor -G42- is a component of the Mass Air Flow (MAF) sensor -G70- and cannot be replaced individually.
Recommended special tools and equipment
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V.A.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 connector test kit
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Wiring diagram
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Chilling spray (commercially available)
Requirements
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The respective fuses of Motronic Engine Control Module (ECM) -J220- must be OK.
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Parking brake must be engaged or else daylight driving lights will be switched on.
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For vehicles with automatic transmission, selector lever must be in position -P- or -N-
Function test
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Connect diagnostic tester. See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Diagnostic Tester,
Connecting
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Switch ignition on.
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Under address word 33, select "Diagnostic mode 1: Check measured values."
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Select measuring value "PID 15: Intake air temperature".
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Check specified value of intake air temperature:
If specified value is not obtained:
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Continue test according to the following table: