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Home >> Nissan-Datsun >> 2007 >> Maxima SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U1000 Through P0153 >> DTC P0133, P0153 A/F Sensor 1 >> DTC Confirmation Procedure

DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

TESTING CONDITION: 

Before performing the following procedure, confirm that battery voltage is more than 11V at idle  .

WITH CONSULT-II 

  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
  4. Let engine idle for 1 minute.
  5. Select "A/F SEN1 (B1) P1278/P1279" (for DTC P0133) or "A/F SEN1 (B1) P1288/P1289" (for DTC P0153) of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-II.
  6. Touch "START".

    If "COMPLETED" appears on CONSULT-II screen, go to step  10.

    If "COMPLETED" does not appear on CONSULT-II screen, go to the following step.

    Fig 1: CONSULT-II Display - A/F SEN1 (B1) P1278/P1279
    G04900278Courtesy of NISSAN MOTOR CO., U.S.A.
  7. After perform the following procedure, "TESTING" will be displayed on the CONSULT-II screen.
    1. Increase the engine speed up to 4, 000 to 5, 000 rpm and keep it for 10 seconds.
    2. Fully release accelerator pedal and then let engine idle for about 10 seconds.

      If "TESTING" is not displayed after 10 seconds, refer to  "TROUBLE DIAGNOSIS - SPECIFICATION VALUE ."

  8. Wait for about 20 seconds at idle at under the condition that "TESTING" is displayed on the CONSULT-II screen.
    Fig 2: CONSULT-II Display - A/F SEN1 (B1) P1278/P1279
    G04900279Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Make sure that "TESTING" changes to "COMPLETED".

    If "TESTING" changed to "OUT OF CONDITION", refer to  "TROUBLE DIAGNOSIS - SPECIFICATION VALUE ."

  10. Make sure that "OK" is displayed after touching "SELF-DIAG RESULT".

    If "NG" is displayed, go to "DIAGNOSTIC PROCEDURE ."

    Fig 3: CONSULT-II Display - A/F SEN1 (B1) P1278/P1279
    G04900280Courtesy of NISSAN MOTOR CO., U.S.A.

WITH GST 

  1. Start engine and warm it up to normal operating temperature.
  2. Select Service $01 with GST.
  3. Calculate the total value of "Short term fuel trim" and "Long term fuel trim" indications. Make sure that the total percentage should be within ±15%.

    If OK, go to the following step.

    If NG, check the following.

    • Intake air leaks
    • Exhaust gas leaks
    • Incorrect fuel pressure
    • Lack of fuel
    • Fuel injector
    • Incorrect PCV hose connection
    • PCV valve
    • Mass air flow sensor
  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. Increase the engine speed up to 4, 000 to 5, 000 rpm and keep it for 10 seconds.
  8. Fully release accelerator pedal and then let engine idle for about 1 minute.
  9. Select Service $07 with GST.

    If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE ."

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