Cabrio GLX L4-2.0L (ABA) (2001)
If the specification is obtained:
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Press -> key.
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Press keys 0 and 6 for "End Output" function and confirm input with Q key.
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Switch ignition off.
Testing power supply to Mass Air Flow (MAF) sensor
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Pull 5 pin connector -1- off Mass Air Flow (MAF) sensor -2-.
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Connect multimeter to measure voltage on connector contact 2 and engine Ground.
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Start engine and run at idle speed.
Specification: 11 to 15 V
If no voltage is present:
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Switch ignition off.
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Check wiring from contact 2 to fuel pump (FP) relay -J17- according to wiring diagram.
If the voltage supply and wiring is OK:
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Switch ignition on.
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Connect multimeter to measure voltage on connector contact 4 and engine Ground:
Specification: 4.5 to 5.5 V
If no voltage is present:
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Switch ignition off.
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Check signal and Ground wires.
Testing signal and Ground wires for Mass Air Flow (MAF) sensor
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Connect test box VAG 1598/22 to control module wiring harness.