Passat Syncro Wagon V6-2771cc 2.8L DOHC (AHA) (1998)
Throttle Position Sensor: Testing and Inspection
With Generic Scan Tool
Throttle Position (TP) sensor, checking
Recommended special tools and equipment
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V.A.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 Connector test set
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Wiring diagram
Test requirement
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The respective fuses of Motronic Engine Control Module (ECM) - J220- must be OK:
Function
Both the Throttle Position (TP) Sensor -G79- and the Sender -2- for accelerator pedal position -G185- are located at the accelerator pedal and
communicate the driver's intentions to the ECM completely independently of each other. Both sensors are stored in one housing.
Test sequence
Note: When servicing terminals in the harness connector for the Intake Air Temperature (IAT) sensor, use only gold-plated terminals.
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Remove footwell cover (driver's side).
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Disconnect 6-pin connector from Throttle Position (TP) Sensor.
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Switch ignition on.
Checking voltage supply and wiring to control module
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Connect multimeter to the following connector terminals for voltage measurement
Terminal 1 + Ground (GND)
Terminal 1 + 5
Terminal 2 + Ground (GND)
Terminal 2 + 3
Specified value: at least 4.5 V