2010 INFINITI QX56 Factory Service Manual

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Page 1761 of 4210

INFINITI QX56 2010 Factory Service Manual EC-408
< COMPONENT DIAGNOSIS >[VK56DE]
IGNITION SIGNAL
OK >>
INSPECTION END
NG >> GO TO 10.
4.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF, wait at least 10 seconds and then

Page 1762 of 4210

INFINITI QX56 2010 Factory Service Manual IGNITION SIGNALEC-409
< COMPONENT DIAGNOSIS > [VK56DE]
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• Harness for open or short between condenser-1 and IPDM E/R
>> Repair open circuit or short to ground or short

Page 1763 of 4210

INFINITI QX56 2010 Factory Service Manual EC-410
< COMPONENT DIAGNOSIS >[VK56DE]
IGNITION SIGNAL
>> Repair or replace harness or connectors.
12.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harnes

Page 1764 of 4210

INFINITI QX56 2010 Factory Service Manual IGNITION SIGNALEC-411
< COMPONENT DIAGNOSIS > [VK56DE]
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7. Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-III to release fuel press

Page 1765 of 4210

INFINITI QX56 2010 Factory Service Manual EC-412
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
System DescriptionINFOID:0000000005149485
From the beginning of refueling, the

EC-412
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
System DescriptionINFOID:0000000005149485
From the beginning of refueling, the air and vapor insi
de the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
WARNING:
When conducting inspections below, be sure to observe the following:
• Put a “CAUTION: FLAMMABLE” sign in workshop.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
• Be sure to furnish the workshop with a CO
2 fire extinguisher.
CAUTION:
• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-pr oof container and put lid on securely.
- Release fuel pressure from fuel line. Refer to EC-489, "
Fuel Pressure Check".
- Disconnect battery ground cable.
• Always replace O-ring when the fu el gauge retainer is removed.
• Do not kink or twist hose and tube when they are installed.
• Do not tighten hose and clamps excessively to avoid damaging hoses.
• After installation, run engine and check for fuel leaks at connection.
• Do not attempt to top off the fuel tank afte r the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, r esulting in fuel spray and possibly a fire.
Diagnosis ProcedureINFOID:0000000005149486
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.
1.CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 3.2 kg (7.1 lb).
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK IF EVAP CANISTER SATURATED WITH WATER
PBIB1068E
Revision: April 20092010 QX56

Page 1766 of 4210

INFINITI QX56 2010 Factory Service Manual ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-413
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Does water drain from
the EVAP canister?
Ye s o r N o
Yes >> GO TO 3.
No >> GO TO 5.

Page 1767 of 4210

INFINITI QX56 2010 Factory Service Manual EC-414
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
4.DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connectio

Page 1768 of 4210

INFINITI QX56 2010 Factory Service Manual ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-415
< COMPONENT DIAGNOSIS > [VK56DE]
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2. Drain fuel from the tank as follows:
a. Remove fuel feed hose located on the fuel gau

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