A6 Quattro Sedan V6-3.0L (AVK) (2002)
NOTE: The engine control module converts and displays the voltage readings from the angle sensors as percentages of 5 V. (A 5 Volt supply
corresponds to 100%).
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Observe readouts in display zones 1 and 2.
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Slowly depress accelerator pedal.
Percentage displayed in zone 1 should rise evenly. Tolerance range from 3 to 93% is not fully utilized.
Percentage displayed in zone 2 should fall evenly. Tolerance range from 97 to 3% is not fully utilized.
NOTE:
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The reason why the value in display zone 1 rises and that in zone 2 falls is that the potentiometers (angle sensors) in the throttle valve control
module operate in opposite directions.
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This means that the voltage picked off by one of the angle sensors runs in the direction of 5 V. (As the throttle is opened, the voltage becomes
greater and the percentage increases).
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The voltage picked off by the angle sensor 2 runs from 5 V in the direction of 0 V. (As the throttle is opened, the voltage becomes smaller and
the percentage decreases).
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Exit function "08 - Read measured value block" by pressing <- button.
If the displays are not as described:
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Check throttle valve control module voltage supply and wiring. Pay particular attention to connectors, which may be disconnected or corroded.
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Check accelerator pedal position sensors. See: Accelerator Pedal Position Sensor/Testing and Inspection
Checking the voltage supply to the throttle valve control module.
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Disconnect connector from throttle valve control module.
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Switch ignition on.
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Connect multimeter as follows to measure voltage:
Connector
Specified value
terminal
2 + ground
approx. 5 V
2+6
approx. 5 V
If the specified values are not obtained:
Checking wiring
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Disconnect connector from throttle valve control module.
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Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See: Testing and
Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Scan Tool Connecting and Initial Checks/Wiring and Component Testing Using
VAG1598/31 Test Box
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Check for open circuit and short to Ground/positive or Ground in following wiring connections:
Connector
Test box VAG 1598/31
terminal
Socket
1
92
2
83
3
117
4
84
5
118