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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2404 (Engine Control System - Introduction (VK56DE)) >> Diagnostic Worksheet >> Inspection And Adjustment >> Idle Air Volume Learning >> Operation Procedure

Operation Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

With CONSULT

  1. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
  2. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
  3. Start engine and warm it up to normal operating temperature.
  4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
  5. Select "IDLE AIR VOL LEARN" in "WORK SUPPORT" mode.
  6. Touch "START" and wait 20 seconds.
  7. Check that "CMPLT" is displayed on CONSULT screen. If "CMPLT" is not displayed, Idle Air Volume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCEDURE below.
  8. Rev up engine 2 or 3 times and check that idle speed and ignition timing are within the specifications.
ITEM SPECIFICATION
Idle speed 650 ± 50 RPM (in P or N position)
Ignition timing 15 ± 5°BTDC (in P or N position)

Without CONSULT

NOTE:
  • It is better to count the time accurately with a clock.
  • It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a malfunction.
  1. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
  2. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
  3. Start engine and warm it up to normal operating temperature.
  4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
  5. Turn ignition switch OFF and wait at least 10 seconds.
  6. Check that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
  7. Repeat the following procedure quickly 5 times within 5 seconds.
    1. Fully depress the accelerator pedal.
    2. Fully release the accelerator pedal.
  8. Wait 7 seconds, fully depress the accelerator pedal for approximately 20 seconds until the MIL stops blinking and turns ON.
  9. Fully release the accelerator pedal within 3 seconds after the MIL turns ON.
  10. Start engine and let it idle.
  11. Wait 20 seconds.
    Fig 1: Accelerator Pedal - Operation Diagram
    G08164861Courtesy of NISSAN NORTH AMERICA, INC.
  12. Rev up engine 2 or 3 times and check that idle speed and ignition timing are within the specifications.
    ITEM SPECIFICATION
    Idle speed 650 ± 50 RPM (in P or N position)
    Ignition timing 15 ± 5°BTDC (in P or N position)
  13. If idle speed and ignition timing are not within the specifications, Idle Air Volume Learning will not be carried out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCEDURE below.
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