LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Engine Controls - Self-Diagnostics - 1.8L - XE, GXE) >> Diagnostic Tests >> DTC P0400: No EGR Flow Detected >> DTC Confirmation Test

DTC Confirmation Test

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If DTC confirmation test has been previously performed, always turn ignition off and wait at least 10 seconds before performing the next test.
CAUTION: Always drive vehicle at a safe speed.
NOTE: Before proceeding, ensure battery voltage is more than 10 volts at idle and ambient temperature is 41°F (5°C) or more.

With CONSULT-II

  1. Turn ignition off and wait at least 10 seconds.
  2. Turn ignition on. Observe COOLAN TEMP/S in DATA MONITOR mode with CONSULT-II.
  3. If COOLAN TEMP/S value is less than 104°F (40°C), go to step  5 . If COOLAN TEMP/S value is not less than 104°F (40°C), go to next step.
  4. Park vehicle in a cool place, and allow engine temperature to stabilize. Do not attempt to lower engine coolant temperature with a fan or means other than ambient air. Doing so may produce an inaccurate diagnostic result.
  5. Start engine and let it idle. Monitor COOLAN TEMP/S value. When COOLAN TEMP/S value reaches 158°F (70°C), immediately go to next step.
  6. Select EGR SYSTEM P0400 of EGR SYSTEM in DTC WORK SUPPORT mode with CONSULT-II. Press START.
  7. Accelerate vehicle to a speed of 25 MPH once, then stop vehicle with engine running. If COMPLETED is displayed, go to step  9 . If COMPLETED is not displayed, go to next step.
  8. When the following conditions are met, TESTING will be displayed on CONSULT-II screen. Maintain conditions continuously until TESTING changes to COMPLETED (it will take 30 seconds or more).
    • ENG SPEED: 1200-3600 RPM.
    • Vehicle speed: more than 6 MPH.
    • B/FUEL SCHDL: 4.5-8.0 msec.

    If TESTING is not displayed after 5 minutes, retry from step  2 .

  9. Press SELF-DIAG RESULTS. If NG is displayed, go to DIAGNOSTIC PROCEDURE  . If OK is displayed, system is okay at this time.

With Generic Scan Tool

  1. Turn ignition off and wait at least 10 seconds. Turn ignition on. Using scan tool, select MODE 1, and read engine coolant temperature.
  2. If engine coolant temperature is less than 104°F (40°C), go to step  5 . If engine coolant temperature is not less than 104°F (40°C), go to next step.
  3. Park vehicle in a cool place, and allow engine temperature to stabilize. Do not attempt to lower engine coolant temperature with a fan or means other than ambient air. Doing so may produce an inaccurate diagnostic result.
  4. Start engine and let it idle. When engine coolant temperature reaches 158°F (70°C), immediately go to next step.
  5. Drive vehicle at a speed of more than 6 MPH with engine speed at 1800-2800 RPM for at least one minute.
  6. Stop vehicle, then repeat steps  1 - 5 .
  7. Select MODE 3 on scan tool. If DTC is detected, go to DIAGNOSTIC PROCEDURE  . If DTC is not detected, system is okay at this time.
scientia non olet · About LEMON Manuals