Rabbit L5-2.5L (BGP) (2006)
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Disconnect the electrical harness connector - 1 - from the Mass Air Flow (MAF) Sensor G70.
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Start engine and let it run at idle.
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Using a Multimeter, check the Mass Air Flow (MAF) Sensor G70 electrical connector terminal 2 to engine Ground (GND) for voltage.
Specified value: battery voltage
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Switch ignition off.
If the specified value is not obtained:
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Check the electrical harness connector for damage, corrosion, lose or broken terminals.
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Check wiring between Mass Air Flow (MAF) Sensor G70 electrical connector terminal 2 and Engine Component Power Supply Relay J682 for an
open circuit.
Specified resistance 1.5 Ohms max.
If the specification is not obtained:
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Check the wiring for a short circuit to Battery positive (+) or an open circuit.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking wiring
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Using a Multimeter, check the following wiring connection for an open circuit.
Mass Air Flow Sensor G70
Motronic Engine Control Module (ECM)
electrical harness connector
J623 electrical connector T121 terminal or
terminal
test box socket