New Beetle L4-1.8L Turbo (BNU) (2005)
Intake Air Temperature Sensor: Testing and Inspection
Intake Air Temperature (IAT) Sensor 2, Checking (Vehicles With Engine Code BKF, BNU)
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)
Test 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 day time driving lights will be switched on.
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Ground (GND) connections between engine and chassis must be OK.
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For vehicles with automatic transmission, selector lever must be in -P-.
Function test
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Connect diagnostic tester.
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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 the 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:
If specified value is obtained:
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Remember the intake air temperature value.