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Home >> Suzuki >> 2009 >> Equator RMZ-4 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ40DE) - (4 Of 5) >> DTC P0139, P0159: Ho2S2 >> DTC Confirmation Procedure >> With SDT
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With SDT

TESTING CONDITION: 

For better results, perform DTC work support at a temperature of 0 to 30 °C (32 to 86 °F). 

  1. Turn ignition switch ON and select "Data list" mode with SDT.
  2. Start engine and warm it up to the normal operating temperature.
  3. Turn ignition switch OFF and wait at least 10 seconds.
  4. Turn ignition switch ON.
  5. Turn ignition switch OFF and wait at least 10 seconds.
  6. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
  7. Let engine idle for 1 minute.
  8. Check that "COOLAN TEMP/S" indicates more than 70°C (158°F).

    If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).

  9. Select "HO2S2 (B1) P0139" or "HO2S2 (B2) P0159" of "HO2S2" in "DTC work support" mode with SDT.
  10. Start engine and follow the instruction of SDT display.
    NOTE: If will take at most 10 minutes until "COMPLETED" is displayed.
  11. Check that "OK" is displayed after touching "DTC check".

    If "NG" is displayed, refer to [P0139, P0159 HO2S2 ].

    If "CAN NOT BE DIAGNOSED" is displayed, perform the following.

    1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
    2. Return to step  1.