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Home >> Infiniti >> 2007 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U1000 To P0153 >> DTC P0130, P0150 A/F Sensor 1 >> Overall Function Check >> Procedure For Malfunction B >> With GST

With GST

  1. Start engine and warm it up to normal operating temperature.
  2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
  3. Set shift lever to D position, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
    NOTE: Never apply brake during releasing the accelerator pedal.
  4. Repeat steps  2 and  3 for five times.
  5. Stop the vehicle and turn ignition switch OFF.
  6. Wait at least 10 seconds and restart engine.
  7. Repeat steps  2 and  3 for five times.
  8. Stop the vehicle and connect GST to the vehicle.
  9. Make sure that no 1st trip DTC is displayed.

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