Nissan Pathfinder. Manual — part 539
EC-462
< PERIODIC MAINTENANCE >
[VQ35DE]
EVAP LEAK CHECK
EVAP LEAK CHECK
Work Procedure
INFOID:0000000009178388
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-41, "EVAPORATIVE EMISSION SYS-
.
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
EVAP LEAK CHECK
EC-463
< PERIODIC MAINTENANCE >
[VQ35DE]
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5. Locate the leakage using a leak detector (commercial service
tool). Refer to
EC-41, "EVAPORATIVE EMISSION SYSTEM :
SEF200U
EC-464
< PERIODIC MAINTENANCE >
[VQ35DE]
POSITIVE CRANKCASE VENTILATION
POSITIVE CRANKCASE VENTILATION
Work Procedure
INFOID:0000000009178389
1.
CHECK PCV VALVE
With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace PCV valve.
PBIB1589E
ECM
EC-465
< REMOVAL AND INSTALLATION >
[VQ35DE]
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REMOVAL AND INSTALLATION
ECM
Removal and Installation
INFOID:0000000009178390
REMOVAL
CAUTION:
Perform ADDITIONAL SERVICE WHEN REPLACING ECM. Refer to
.
1. Remove front air duct. Refer to
2. Remove battery. Refer to
.
3. Disconnect ECM harness connectors. Refer to
4. Remove ECM mounting nuts , and then remove ECM .
INSTALLATION
Install in the reverse order of removal.
JSBIA1367GB
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