Touareg 2 V6-3.6L (BHK) (2008)
Test requirements
‹› The Heated Oxygen Sensor (HO2S) (G39) fuses OK.
‹› The Oxygen Sensor (O2S) Heater (Z19) before catalytic converter OK. --> [ Oxygen Sensor Heater, Checking ] See: Testing and
Inspection/Component Tests and General Diagnostics/Oxygen Sensor Heater, Checking.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Exhaust system between catalytic converter and cylinder head properly sealed.
‹› Coolant Temperature at least 80° C.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to --> [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check
Start diagnosis
Function test
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Connect scan tool.
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Start the engine and let it run at idle.
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Select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
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Select "Test-ID 01: Oxygen sensor monitoring before catalytic converter".
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Select "Test-ID 131: Dynamic test".
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Check the specified values at idle.