Jetta GLX Wagon V6-2.8L (AFP) (2001)
NOTES:
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The display in display field 1 rises and the display in display field 2 falls because the potentiometers (angle sensors) in the throttle valve control
modules run in opposite directions.
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This means that the voltage of one angle sensor moves toward 5 volts (the more the throttle valve is opened the higher the voltage; percentage
increases), while the voltage of angle sensor 2 drops from 5 volts toward 0 volts (the more the throttle valve is opened the lower the voltage;
percentage falls).
If the specified values are obtained:
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
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Switch ignition off.
Continuation
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
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Switch ignition off.
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Disconnect 6-pin harness connector from throttle valve control module (arrow).
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Measure resistance from throttle valve drive between terminals -3- and -5-
Specified value: 1.0-5.0 ohms
If the specified value is not obtained:
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Replace throttle valve control module -J338- See "Intake Manifold Upper Section, Disassembling and Assembling", item 10. See: Service and
Repair
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Check DTC memory. If necessary, repair any malfunctions and erase DTC memory. See: Computers and Control Systems/Testing and Inspection
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Adapt Engine Control Module (ECM) to throttle valve control module. See: Computers and Control Systems/Engine Control Module/Testing and
Inspection
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Display readiness code. See: Computers and Control Systems/Testing and Inspection
If DTC memory has been erased or the Engine Control Module (ECM) was disconnected from permanent battery (B+) voltage, the readiness code
must be generated again. See: Computers and Control Systems/Testing and Inspection
If the specified value is obtained:
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Check voltage supply of throttle valve control module and wiring to control unit See below.
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Check accelerator pedal sensor.
If the voltage supply and wiring is OK:
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Replace Engine Control Module (ECM). See: Computers and Control Systems/Engine Control Module/Service and Repair
Checking voltage supply and wiring to control module