Touareg V8-4.2L (BHX) (2004)
‹› Coolant temperature must be at least 20° C , Diagnostic mode 1: Check measured values; PID 5, Coolant temperature.
Function test
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Connect diagnostic tester.
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Switch ignition on.
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Under address word 33, select "Diagnostic mode 1: Checking measured values."
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Select the measuring value "PID 17: Throttle valve position (absolute)."
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Check specified value of throttle valve position (absolute) at idle stop:
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Slowly depress accelerator pedal up to Wide Open Throttle (WOT) stop while observing the percentage display.
The percentage display must increase uniformly.
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Check specified value of throttle valve position (absolute) at Wide Open Throttle (WOT) stop:
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End diagnosis and switch ignition off.
If specified values are not obtained:
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Disconnect the 6-pin connector at the throttle valve control module (arrow).
Checking resistance
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Measure resistance of Throttle drive (G186) (power accelerator actuation) in Throttle Valve Control Module (J338) between terminals 3 + 5