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Home › Nissan-Datsun › 2024 › Armada SL, RWD › Repair and Diagnosis › Engine Performance › System › Engine Control System (DTCS) (4 Of 4) › Engine (ECM) › DTC P2270: O2 Sensor 2 Bank 1 › Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING 
    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    >>

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A 
    1. Start engine and warm it up to the normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
    6. Let engine idle for 2 minutes.
    7. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES>>

    Refer to DTC Diagnosis Procedure .

    NO-1>>

    With CONSULT : GO TO 3.

    NO-2>>

    With GST:

    GO TO 5

    .

  3. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B SYMBOL
    NOTE: For better results, perform "DTC WORK SUPPORT" at a temperature of 0 to 30°C (32 to 86°F).
    1. Start engine and warm it up to the normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
    6. Let engine idle for 1 minute.
    7. Select "DATA MONITOR" mode with CONSULT.
    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 70°C (158°F).

    9. Open engine hood.
    10. Select "HO2S2 (B1) P1146" (for DTC P2270) of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT.
    11. Follow the instruction of CONSULT display.
      NOTE: It will take at most 10 minutes until "COMPLETED" is displayed.
    12. Touch "SELF-DIAG RESULTS".

    Which is displayed on CONSULT screen?

    OK>>

    INSPECTION END

    NG>>

    Refer to DTC Diagnosis Procedure .

    CON NOT BE DIAGNOSED>>

    GO TO 4.

  4. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B AGAIN 
    1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
    2. Perform DTC confirmation procedure again.

    >>

    GO TO 3.

  5. PERFORM COMPONENT FUNCTION CHECK-I 
    NOTE: Use component function check to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed.

    SYMBOL WITH GST

    1. Start engine and warm it up to the normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
    6. Let engine idle for 1 minute.
    7. Check the voltage between ECM harness connector terminals under the following conditions.
      ECM Condition Voltage
      + -
      Connector Terminal Connector Terminal
      F92 84 F91 43 Revving up to 4, 000 RPM under no load at least 10 times The voltage should be below 0.18 V at least once during this procedure.

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    GO TO 6.

  6. PERFORM COMPONENT FUNCTION CHECK-II 

    Check the voltage between ECM harness connector terminals under the following conditions.

    ECM Condition Voltage
    + -
    Connector Terminal Connector Terminal
    F92 84 F91 43 Keeping engine at idle for 10 minutes The voltage should be below 0.18 V at least once during this procedure.

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    GO TO 7.

  7. PERFORM COMPONENT FUNCTION CHECK-III 

    Check the voltage between ECM harness connector terminals under the following conditions.

    ECM Condition Voltage
    + -
    Connector Terminal Connector Terminal
    F92 84 F91 43 Coasting from 80 km/h (50 MPH) with selector lever in the D position The voltage should be below 0.18 V at least once during this procedure.

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Refer to DTC Diagnosis Procedure .

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