A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
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Slowly depress accelerator pedal.
Percentage displayed in field 3 should rise evenly. Tolerance range from 12..0.97% is not fully utilized.
Percentage displayed in field 4 should also rise evenly. Tolerance range from 4...49% is not fully utilized.
NOTE: The value displayed in field 3 must always be about twice as large as that in field 4.
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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 Sender -2- for accelerator pedal position -G185- voltage supply and wiring.
Voltage supply for Throttle Position (TP) sensor -G79- and Sender -2- for accelerator pedal position -G185-, checking
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Remove driver's storage compartment:
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Disconnect connector for throttle position sensors.
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Switch ignition on.
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Connect multimeter as follows to measure voltage:
Connector
Specified value
terminal
1 + ground (GND)
approx. 5 V
1 + 5
approx. 5 V
2 + ground (GND)
approx. 5 V
2 + 3
approx. 5 V
If specifications are obtained:
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Additionally check signal wires.
If the specified values are not obtained:
Check wiring
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Connect test box V.A.G 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/With Generic Scan Tool/Scan Tool Connecting/Test Box, Connecting For
Wiring and Component Test
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Check for open circuit and short to positive (B+) or ground (GND) in following wiring connection: