S4 V8-4.2L (BHF) (2004)
NOTE: Use only gold-plated terminals when servicing terminals in harness connector of throttle valve control module.
Checking function
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Connect diagnostic tester. See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Diagnostic Tester,
Connecting
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Switch ignition on.
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In diagnostic function "33 - OBD", select "Mode 1: Checking measured values."
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Select the desired measuring value "PID 17: Throttle valve position (absolute)."
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Specified value: 12 to 16%
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Slowly depress accelerator pedal completely.
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Specified value: The percentage display must increase uniformly
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Hold accelerator pedal fully depressed; in vehicles with automatic transmission, do not depress beyond the kickdown point when doing this.
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Specified value: 84 to 88%
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Switch ignition off.
If specified values are not obtained:
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Check voltage supply and wire connections of throttle valve control module, Pay particular attention to harness connectors that could be loose or
corroded.
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Check Throttle Position (TP) sensor. See: Testing and Inspection/Component Tests and General Diagnostics/Throttle Position (TP) Sensor,
Checking
Checking voltage supply
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Remove rear engine cover -arrows-.
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Disconnect electrical harness connector -1- at Throttle Valve Control Module -J338-.
NOTE: Disregard items -2- and -3-.
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Switch ignition on.