S6 Wagon L5-2226cc 2.22L DOHC Turbo (AAN) (1995)
Closed Throttle Position Switch: Testing and Inspection
Note: The Closed Throttle Position (CTP) switch is located in the Throttle Position (TP) sensor housing.
Requirement
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Accelerator pedal cable adjustment OK
Function Test with VAG 1551
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Connect VAG 1551 scan tool. Refer to Connecting and Operating VAG 1551 Scan Tool See: Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting and Operating VAG
1551 Scan Tool
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Select "Read measuring value block" function 08 using VAG 1551 Scan Tool.
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Input display group number 04.
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Observe display values in channel 4, while performing the following:
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Apply Accelerator Pedal slightly (a few millimeters). Two digits of the 5-digit display number, must change:
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3rd digit: changes from 0 to 1
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4th digit: changes from 1 to 0
If value changes (but only after additional pedal travel):
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Adjust CTP switch.
If display does NOT change:
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Check CTP switch and wiring connections.
If digits have already changed prior to accelerator pedal application:
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3rd digit already changed to 1
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4th digit already changed to 0
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Adjust CTP switch.
If after adjusting, fault is still present:
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Check CTP switch and wiring connection.
Electrical Check
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Disconnect Throttle Position (TP) sensor connector.
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Set Digital Volt Ohm Multimeter (DVOM) to resistance range.
Throttle Switch/Sensor Terminals
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Connect DVOM between terminals 4 and 6 using VW 1594 connector test kit.
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Resistance must be 0 ohms (continuity).
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Open throttle valves slightly.
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Resistance must be infinite ohms (open).
If specified value is NOT obtained (or is obtained only after opening valves farther):
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Adjust CTP switch.
If specified value is still NOT obtained after adjusting CTP switch:
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Replace TP sensor.
Adjusting
Note: Adjusting the CTP switch automatically adjusts the TP sensor.