R32 4Motion V6-3.2L (CBRA) (2008)
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Disconnect the Heated Oxygen Sensor (HO2S) 2 G108 electrical harness connector - 1 -.
Checking internal resistance
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) 2 G108 terminals 3 to 4 for resistance.
Specified value: 2.5 to 10.0 ohms (at approx. 20 degrees C)
If the specification was not obtained:
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Replace the Heated Oxygen Sensor (HO2S) 2 G108.
If the specification was obtained:
Checking voltage supply
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) G39 electrical harness connector terminal 4 to ground (GND) for voltage.
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Crank the engine.
Specified value: Battery voltage.
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Switch the engine off.
If the specification was not obtained:
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Check the Heated Oxygen Sensor (HO2S) 2 G108 electrical harness connector terminal 4 to the Motronic Engine Control Module (ECM) Power
Supply Relay J271 socket 2/87 for an open circuit, a short circuit to each other, Battery (+), or Ground (GND).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If the specification was obtained:
Checking Ground (GND) activation
If the specified value was not obtained:
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.