DTC Confirmation Procedure

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

WITH CONSULT-II 

1. Install vacuum gauge between EGRC-BPT valve and EGR valve as shown in the illustration.
   Fig 1: Installing Vacuum Gauge Between EGRC-BPT Valve And EGR Valve

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Start engine and warm it up to normal operating temperature.
3. Stop engine and wait at least 5 seconds.
4. Turn ignition switch ON and select "EGRC-BPT VLV P0402" of "EGR SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II.
5. Start engine and let it idle.
6. Touch "START".
7. Check the output voltage of "THRTL POS SEN" (at closed throttle position) and note it.
   Fig 2: Reading "THRTL POS SEN" In "DTC WORK SUPPORT" Mode

   Courtesy of NISSAN MOTOR CO., U.S.A.
8. When the following conditions are met, "TESTING" will be displayed on the CONSULT-II screen and the bar chart may increase. Maintain the conditions many times until "COMPLETED" appears.
   Fig 3: Reference Data

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 4: Reading "TESTING" In "DTC WORK SUPPORT" Mode

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 5: Reading "COMPLETED" In "DTC WORK SUPPORT" Mode

   Courtesy of NISSAN MOTOR CO., U.S.A.
   NOTE:

   • The bar chart on CONSULT-II screen indicates the status of this test. However, the test may be finished before the bar chart becomes full scale.
   • If the bar chart indication does not continue to progress, completely release accelerator pedal once and try to meet the conditions again.
   • If "TESTING" does not appear on CONSULT-II screen, retry from step  2.
9. If CONSULT-II instructs to carry out Overall Function Check, go to next step. If "NG" is displayed, refer to "DIAGNOSTIC PROCEDURE ".
10. Open engine hood.
11. Raise engine speed to 2, 000 to 2, 800 RPM under no-load and hold it. Then "TOUCH NEXT" on CONSULT-II screen.
    Fig 6: Reading "TOUCH NEXT" On CONSULT-II Screen

    Courtesy of NISSAN MOTOR CO., U.S.A.
12. Check vacuum gauge while keeping engine speed at 2, 000 to 2, 800 RPM.

    Vacuum should be 0 to -20 kPa (0 to -150 mmHg, 0 to -5.91 inHg). 

    If NG, go to "DIAGNOSTIC PROCEDURE ".

    If OK, touch "YES" on the CONSULT-II screen.

13. Check the rubber tube between intake manifold collector, EGRC-solenoid valve, EGR valve and EGRC-BPT valve for cracks, blockages or twisting.

    If NG, repair or replace.

    If OK, touch "YES" on the CONSULT-II screen.

Fig 7: Reading "NG/OK" on CONSULT-II screen

Courtesy of NISSAN MOTOR CO., U.S.A.