Passat Sedan V6-3.6L (BLV) (2008)
Switch the ignition on.
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Using a multimeter, check the Oxygen Sensor Heater Bank 1 Sensor 2 (Z29) electrical harness connector terminal 1 to ground for voltage.
Specified value: 10.10 to 11.70 V
Switch the ignition off.
If the specification was not obtained:
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Check the wiring from fuse 45 in Fuse Panel B to the O2S heater terminal 1 for high resistance, a short circuit to ground or an open circuit.
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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 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 Motronic Engine Control Module (ECM) (J623). Refer to the Repair Information.
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Using a multimeter, check the Oxygen Sensor Heater Bank 1 Sensor 2 (Z29) electrical harness connector to the Engine Control Module (ECM)
(J623) electrical harness connector T94 for an open circuit.
Specified value: 1.5 ohms max.
If the specification was not obtained:
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Check the wiring for high resistance, an open or a short to voltage or ground.
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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.
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Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Testing and Inspection/Scan Tool Testing and