Passat Syncro Wagon V6-2.8L (ATQ) (2000)
NOTE:
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The reason why the value indicated in display field 1 climbs, while the value indicated in display field 2 decreases has to do with the fact that the
potentiometers (angle sensors) in the throttle valve control module run in opposite directions.
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This means that the voltage tap of angle sensor 1 runs from 0 to 5 volts. (The more the throttle valve is opened, the larger the voltage; percent
indication climbs).
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The voltage tap of angle sensor 2 runs from 5 to 0 volts. (The more the throttle valve is opened, the lower the voltage; the percentage decreases).
If indications do not resemble description:
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Press -> button.
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Press buttons -0- and -6- to select "End data transfer" function 06. Press -Q- button to confirm input.
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Switch ignition off.
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Pull off 6-way connector (2) on the throttle valve control module.
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Measure resistance of throttle valve drive in throttle valve control module between terminals 3 + 5
Specification: 3 - 200 Ohms
If specified value is not obtained:
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Replace throttle valve control module (J338).
If the specified value is met:
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Check voltage supply of throttle valve control module and wires to control module.
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Test Throttle Position (TP) sensor and sensor 2 for accelerator pedal position.
If voltage supply and wires are in order:
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Replace Engine Control Module (ECM).
Checking Voltage Supply and Wires to Control Module
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Pull 6-way connector (2) off throttle valve control module.