Jetta V6-2.8L (AFP) (1999)
Throttle Position Sensor: Testing and Inspection
With Manufacturer's Scan Tool
Throttle position sensor, checking
Special tools, equipment, test and inspection devices; required accessories
Special Tools
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V.A.G 1526 A hand-held multimeter
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V.A.G 1551 scan tool or V.A.G 1552 system tester with V.A.G 1551/3 cable
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VAG 1594 A auxiliary measuring tool set
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V.A.G 1598/31 test box
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Wiring diagram
Function
The two throttle position sensors, G79 and G1185, are both on the accelerator and communicate the driver action to the engine control unit
independently of each other. The sensors are accommodated in a casing.
Test sequence
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Connect the V.A.G 1551 (V.A.G 1552) scan tool and select the control unit for the engine electronics using "address word" 01. The ignition must
be on.
Indicated on display:
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Press the keys "0" and "8" for the function "Read Measuring Value Block" and acknowledge the entry by pressing "Q."
Indicated on display: