Passat Wagon L4-1781cc 1.8L DOHC Turbo (ATW) (2000)
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Pull 4-pin connector -2- off charge air pressure sensor -G31-, -1-.
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Connect multimeter to measure voltage using auxiliary cables from V.A.G 1594 to connector contacts 1 + 3.
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Switch ignition on.
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Specification: min. 4.5 V
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Switch ignition off.
If the specification is not obtained:
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Connect test box V.A.G 1598/31 to control unit wiring harness (The engine control module remains disconnected).
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Check wiring between test box and connector for open circuit according to wiring diagram.
