TT Roadster L4-1.8L Turbo (AWP) (2003)
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Check wires between test box and 2-pin connector for open circuit according to wiring diagram.
Terminal 1+socket 85
Terminal 2+socket 108
Wire resistance: max: 1.5 Ohm
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohm
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...50 degree C, range B displays resistance values for the temperature range of 50...100
degree C.
Read-out examples:
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30 degree C is in range A and corresponds to a resistance of 1.5 to 2.0 k Ohm
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80 degree C is in range B and corresponds to a resistance of 275 to 375 Ohm
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: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase
Diagnostic Data
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes/Audi
Drive Cycle/Readiness Code/With Generic Scan Tool/Readiness Code, Generating