Passat Syncro Wagon V6-2771cc 2.8L DOHC (AHA) (1998)
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Switch ignition on and measure voltage.
Specified value: min. 11.5 volts
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Switch ignition off.
If the specification is not attained:
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Check wiring from terminal 3 to fuse panel using applicable wiring diagram.
Wiring, checking
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Connect VAG1598/22 test box to ECM harness connector.
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Check wiring for open circuits, between ECM/test box and 3-pin MAF sensor harness connector.
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Connector terminal 1 to ECM/test box socket 13
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Connector terminal 2 to ECM/test box socket 12
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Specified value: max. 1.5 Ohms
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Check wiring for short circuits between terminals of 3-pin connector.
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Specified value: Infinity Ohms
If the voltage supply and wiring is OK:
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Replace Mass Air Flow (MAF) sensor -G70-.
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Check readiness code. If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes