Work Procedure

FUEL PRESSURE RELEASE 

WITH CONSULT 

1. Turn ignition switch ON.
2. Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.

WITHOUT CONSULT 

1. Remove fuel pump fuse in IPDM E/R.
   NOTE:

   • For the fuse number, Refer to Wiring Diagram .
   • For the fuse arrangement, Refer to Wiring Diagram .
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.

LOW FUEL PRESSURE CHECK 

1. Release fuel pressure to zero.
2. Prepare fuel hose for fuel pressure check (B) and fuel tube adapter [SST (KV10118400)] (D), then connect fuel pressure gauge (A).

   Courtesy of NISSAN NORTH AMERICA, INC.

   	To quick connector
   	To fuel tube (engine side)
   C	: Hose clamp

   CAUTION:

   • Use suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose without quick connector).
   • To avoid unnecessary force or tension to hose, use moderately long fuel hose for fuel pressure check.
   • Do not use the fuel hose for checking fuel pressure with damage or cracks on it.
   • Use Pressure Gauge to check fuel pressure.
3. Disconnect fuel feed hose from fuel tube. Refer to HIGH PRESSURE FUEL PUMP AND FUEL HOSE : Exploded View .
   CAUTION:

   Do not twist or kink fuel hose because it is plastic hose.

4. Connect fuel hose for fuel pressure check (1) to fuel tube (engine side) with clamp (2) as shown in the figure, below.

   Courtesy of NISSAN NORTH AMERICA, INC.

   5	: No. 2 spool

   CAUTION:

   • Wipe off oil or dirt from hose insertion part using cloth moistened with gasoline.
   • Apply proper amount of gasoline between top of the fuel tube (3) and No. 1 spool (4).
   • Insert fuel hose for fuel pressure check until it touches the No. 1 spool on fuel tube.
   • Use NISSAN genuine hose clamp (part number: 16439 N4710 or 16439 40U00).
   • When reconnecting fuel line, always use new clamps.
   • Use a torque driver to tighten clamps.
   • Install hose clamp to the position within 1 - 2 mm (0.04 - 0.08 in).

     Tightening torque

     : 1.0 - 1.5 N.m (0.1 - 0.15 kg-m, 9 - 13 in-lb)

   • Make sure that clamp screw does not contact adjacent parts.
5. Connect fuel tube adapter (C) to fuel feed hose (1) in the same manner as instructed in Step 4.

   Courtesy of NISSAN NORTH AMERICA, INC.

   A	: Fuel pressure gauge
   B	: Fuel hose for fuel pressure check

6. After connecting fuel hose for fuel pressure check, pull the hose with a force of approximately 98 N (10 kg, 22 lb) to confirm fuel tube does not come off.
7. Reinstall the part removed at Step 3.
   NOTE: Install the part to allow smooth engine starts.
8. Turn ignition switch ON and check for fuel leakage.
9. Start engine and check for fuel leakage.
10. Read the indication of fuel pressure gauge.
    CAUTION:

    • Do not perform fuel pressure check with system operating. Fuel pressure gauge may indicate false readings.
    • During fuel pressure check, confirm for fuel leakage from fuel connection every 3 minutes.

    At idling

    : Approximately 450 kPa (4.5 bar, 4.6 kg/cm2 , 65 psi)

HIGH FUEL PRESSURE CHECK 

WITH CONSULT

1. Start engine.
2. Check "FUEL PRES SEN V" in "DATA MONITOR" mode with CONSULT.

   Monitor Item	Condition	Values/Status
   FUEL PRES SEN V	Idle	980 - 1, 200 mV
   	Revving engine from idle to 4, 000 RPM quickly	1, 100 - 2, 900 mV

WITHOUT CONSULT

1. Start the engine.
2. Check fuel rail pressure sensor signal voltage.