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Conditioning For Sensor Testing

Fig 1: Engine Speed Graph
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  1. Connect the intelligent tester or the OBD II scan tool to the DLC3 (Procedure "A").
  2. Start the engine and warm it up with all the accessories switched OFF until the Engine Coolant Temperature (ECT) is stable (Procedure "B").
  3. Run the engine at 2,500 to 3,000 RPM for about 3 minutes (Procedure "C").
  4. When alternating the engine between 3,000 RPM and 2,000 RPM for 2 seconds respectively, check the waveform of the oxygen sensor (bank 1 sensor 2) (Procedure "D").
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