S8 Quattro Sedan V8-4.2L (AYS) (2002)
The percentage value in display field 4 should also rise steadily but without covering the full range of values (in this case 4 to 49 %).
NOTE: The value shown in display field 3 should always be about twice as high as the value shown in display field 4.
If the display values do not appear:
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Check voltage supply and wiring to accelerator position senders.
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Adjust accelerator position sensors.
Checking voltage supply of accelerator position sensors
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Remove storage compartment on driver's side.
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Disconnect harness connector for accelerator position sensor.
NOTE: The connector is clipped onto the pedal bracket near the brake light switch.
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Switch ignition on.
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Connect hand-held multimeter (voltage range) between the following sockets on the connector:
6-pin connector on wiring harness, socket Specification
2 + Ground (GND)
approx. 5 V
1 + 3
approx. 5 V
5 + Ground (GND)
approx. 5 V
5 + 4
approx. 5 V
If the specifications are obtained:
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Check signal wiring.
If the specifications are not obtained:
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Check wiring between engine control module and accelerator position sensors.
Checking signal wiring and wiring connections between accelerator position sensors and engine control module
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Connect VAG1598/31 test box to wiring harness for engine control module. Do not connect to the engine control module itself. Refer to "Scan
Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG1598/31 Test Box" See: Testing and Inspection
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Check for open circuit and short to B+ or Ground (GND) in the following wiring connections:
Connector socket VAG1598/31 test box Socket
1 (signal wire)
35
2
73
3
36
4
33
5
72
6 (signal wire)
34
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Repair any open/short circuit as necessary.
If no wiring malfunction is detected:
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Replace accelerator position sensors.
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Display readiness code. The readiness code must be generated if the DTC memory was erased.
Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/Readiness Code" See: Testing and Inspection
Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/Generating Readiness Code" See: Testing and Inspection