A6 Quattro Wagon V6-3.2L (BKH) (2006)
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Operate the starter briefly.
Specified value: Battery voltage.
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Switch the ignition off.
If there is no voltage again:
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Using a Multimeter , check the wiring connection from the Heated Oxygen Sensor (HO2S)electrical harness connector terminal to the Engine
Control Module (ECM) Power Supply Relay (J363) terminal through the fuse for an open circuit.
Specified value: 1.5 ohms max.
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If necessary, repair the wiring connection.
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If the voltage supply is OK:
Check Ground (GND) activation
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Using a Multimeter , check the electrical harness connector for voltage.
