A8 Sedan V8-3.7L (AEW) (1997)
Intake Air Temperature Sensor: Testing and Inspection
Intake Air Temperature (IAT) Sensor, Checking
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Connect VAG1551 or VAG1552 Scan Tool (ST) and press buttons -0- and -1- to insert "Engine Electronics" address word 01. Refer to "Scan
Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG1551 or VAG1552 Scan Tool" See: Computers and Control
Systems/Testing and Inspection
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press buttons -0- and -8- to select "Read Measuring Value Block" function 08, and press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
Input display group number XXX
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Press buttons -0-, -0- and -3- to input display group number 3 (003), and press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block 3
->
1
2
3
4
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Check specified values for basic functions at engine idle speed (display field 4):
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Press -> button to advance program sequence.
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Press buttons -0- and -6- to select "End Output" function 06, and press -Q- button to confirm input.
If the ECM-calculated replacement value (20 °C) is displayed:
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Disconnect IAT sensor harness connector.