R32 4Motion V6-3.2L (CBRA) (2008)
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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) G39 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.
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Remove the Engine Control Module (ECM) J623.
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) G39 electrical harness connector to the Engine Control Module (ECM) J623
electrical harness connector T121 for resistance.
Heated Oxygen Sensor
Engine Control Module (ECM)
(HO2S) G39 electrical harness
J623 electrical connector T121
connector terminal
terminal or test box socket
3
5
Specified value: 1.5 ohms max.
If the specification was not obtained:
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Check the wiring for an open circuit, a short circuit to each other, Battery (+), and 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 no malfunction is found in the wiring and if the voltage supply was OK:
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Erase the DTC memory. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 04 -
Erase DTC Memory
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Perform a road test to verify repair.
If the DTC does not return:
