A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
To disconnect the Heated Oxygen Sensor (HO2S) 2 (G108), perform the following steps:
-
Remove the screw - arrow - retaining the coolant reservoir.
-
Disconnect the Engine Coolant Level (ECL) Warning Switch (F66) electrical connector from the bottom of the coolant reservoir and set aside the
coolant reservoir with the coolant hoses - 1 - and - 2 - connected.
-
Disconnect the Oxygen Sensor (O2S) Heater (-Z28- ) electrical harness connector - 2 -.
Checking primary voltage