A6 Sedan V6-3.2L (BKH) (2007)
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Using a Multimeter , check the electrical harness connector terminals 3 to 4 for voltage.
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Switch ignition on.
Specified value: 0.400 to 0.500 V
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Switch ignition off.
If specified value is obtained:
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Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) or Oxygen Sensor (O2S) 2 Behind Three Way Catalytic
Converter (TWC) (G131) => Fuel Injection and Ignition 24 Removal and Installation.
If specified value is not obtained:
Checking wiring
If the manufacturers test box is being used, perform the following step.
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Connect the Test Box 105 Pin (VAG1598/42) with Adapter Cable (1598/39-1) => Fuel Injection and Ignition 24 Diagnosis and Testing
If the manufacturers test box is not being used, perform the following step.
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Remove the Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Engine Control Module/Service and
Repair/Engine Control Module, Replacing
Using a Multimeter, check the Heated Oxygen Sensor (HO2S) 2 (G108) electrical harness connector terminals to the Engine Control Module (ECM)
(J623) electrical harness connector terminals for resistance.