Passat Sedan L4-1781cc 1.8L Turbo (AEB) (1999)
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Press -> button.
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Press 0 and 6 buttons to select Function 06: "End data transfer"
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Press Q button to enter input
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Switch OFF ignition.
Continuation
If NO speed indicated or displayed values reduce when driving slowly
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Connect VAG 1598/22 Test Box to Engine Control Module harness connector.
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Switch Multimeter to Voltage measurement range
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Connect Multimeter between Test Box sockets 2 + 20.
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Switch ON ignition.
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Lift vehicle at front left.
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Rotate front wheel and observe Voltage Display.
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Specification: between 0 and at least 4 Volts fluctuating
If value does not fluctuate:
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Check wiring to speedometer / speedometer sensor.