A8 Sedan V8-3.7L (AEW) (1997)
Throttle Position Sensor: Testing and Inspection
Throttle Position (TP) Sensor, Checking
Checking function
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Connect VAG1551 or VAG1552 Scan Tool (ST) and press buttons -0- and -1- to insert "Engine Electronics" address word 01 (engine running at
idle). 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 -4- to input display group number 4 (004), and press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block 4
->
1
2
3
4
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Check specified values for basic functions with ignition switched on (display field 1):
If throttle angle is not OK:
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Check accelerator pedal cable adjustment.
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Press -> button to advance program sequence.
Press buttons -0- and -6- to select "End Output" function 06, and press -Q- button to confirm input.
If accelerator pedal cable adjustment is OK:
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Check Closed Throttle Position (CTP) switch and adjust as necessary. See: Throttle Position Switch/Testing and Inspection