Nissan Quest E52. Manual - part 561

EC-454

< SYMPTOM DIAGNOSIS >

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NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

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FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)

If the engine speed is above 2,000 rpm under no load (for example, the selector lever position is P or N and
engine speed is over 2,000 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off var-
ies based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,100 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, 

EC-39,

"MULTIPORT FUEL INJECTION SYSTEM : System Description"

.

IDLE SPEED

EC-455

< PERIODIC MAINTENANCE >

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PERIODIC MAINTENANCE

IDLE SPEED

Work Procedure

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1.

CHECK IDLE SPEED

With CONSULT

Check idle speed in “DATA MONITOR” mode with CONSULT.

With GST

Check idle speed with Service $01 of GST.

>> INSPECTION END

EC-456

< PERIODIC MAINTENANCE >

[VQ35DE]

IGNITION TIMING

IGNITION TIMING

Work Procedure

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1.

CHECK IGNITION TIMING

1.

Attach timing light to loop wires as shown.

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Timing light (A)

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: Vehicle front

2.

Check ignition timing.

>> INSPECTION END

JMBIA1128ZZ

JMBIA1135GB

EVAP LEAK CHECK

EC-457

< PERIODIC MAINTENANCE >

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EVAP LEAK CHECK

Work Procedure

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CAUTION:

• Never use compressed air or a high pressure pump.
• Never exceed 4.12 kPa (0.042 kg/cm

2

, 0.6 psi) of pressure in EVAP system.

NOTE:
• Do not start engine.
• Improper installation of EVAP service port adapter (commercial service tool) to the EVAP service port may

cause a leakage.

 WITH CONSULT

1.

To locate the EVAP leakage, install EVAP service port adapter
(commercial service tool) and pressure pump to EVAP service
port.

2.

Turn ignition switch ON.

3.

Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT
MODE” with CONSULT.

4.

Touch “START”. A bar graph (Pressure indicating display) will
appear on the screen.

5.

Apply positive pressure to the EVAP system until the pressure
indicator reaches the middle of the bar graph.

6.

Remove EVAP service port adapter (commercial service tool)
and hose with pressure pump.

7.

Locate the leakage using a leakage detector (commercial ser-
vice tool). Refer to 

EC-49, "EVAPORATIVE EMISSION SYS-

TEM : System Description"

.

 WITHOUT CONSULT

1.

To locate the EVAP leakage, install EVAP service port adapter
(commercial service tool) and pressure pump to EVAP service
port.

2.

Apply battery voltage between the terminals of EVAP canister
vent control valve to make a closed EVAP system.

3.

To locate the leakage, deliver positive pressure to the EVAP sys-
tem until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to
0.028 kg/cm

2

, 0.2 to 0.4 psi).

4.

Remove EVAP service port adapter (commercial service tool)
and hose with pressure pump.

SEF462UA

SEF200U

SEF462UA