A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
-
Using a multimeter, check the Heated Oxygen Sensor (HO2S) electrical harness connector terminals 1 to 2 for voltage.
Specified value: 0.400 to 0.500 Volts
-
Switch the ignition off.
If the specified value was obtained:
-
Replace the faulty Heated Oxygen Sensor (HO2S). Refer to Fuel Injection and Ignition Repair Information.
If the specified value was not obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
-
Install the test box. Refer to Fuel Injection and Ignition Repair Information.
If the manufacturers test box is not being used. Perform the following step.
-
Remove the Engine Control Module (ECM) (J623 ). Refer to => [ ECM, Removing and Installing ] See: Engine Control Module/Service and
Repair/ECM, Removing and Installing.
-
Using a Multimeter, check the Heated Oxygen Sensor (HO2S) electrical harness connector terminals to the Engine Control Module (ECM) (J623)
electrical harness connector T94 terminals for an open circuit.