Eos (1F7) L4-2.0L Turbo (BPY) (2007)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor Heater Z19 For Heated Oxygen Sensor G39 In front of Catalytic Converter, Checking
Oxygen Sensor Heater Z19 for Heated Oxygen Sensor G39 in front of Catalytic Converter, Checking
‹› When servicing terminals in harness connector of Heated Oxygen Sensor (HO2S) (G39), use only gold-plated terminals.
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› The Heated Oxygen Sensor (HO2S) (G39) fuse OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
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Remove the engine cover with air filter.
Checking internal resistance
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Disconnect the Heated Oxygen Sensor (HO2S) (G39 ) electrical harness connector - 1 -.
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Using a multimeter, check the Heated Oxygen Sensor (HO2S) (G39) terminals 3+4 for an open circuit.
Specified value: 2.5 to 10.0 ohms (at approx. 20° C)