2007 INFINITI FX35 Service Manual

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Page 1753 of 4366

INFINITI FX35 2007 Service Manual DTC P0420, P0430 THREE WAY CATALYST FUNCTION EC-377
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Revision: 2006 July 2007 FX35/FX45
8. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUP-
PO

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INFINITI FX35 2007 Service Manual EC-378
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DTC P0420, P0430 THREE WAY CATALYST FUNCTION
Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS003QR
1. CHECK EXHAUST SYSTEM
Visually check exhaust tubes and muffler for dent.

Page 1755 of 4366

INFINITI FX35 2007 Service Manual DTC P0420, P0430 THREE WAY CATALYST FUNCTION EC-379
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Revision: 2006 July 2007 FX35/FX45
5. CHECK FUEL INJECTOR
1. Stop engine and then turn ignition sw

DTC P0420, P0430 THREE WAY CATALYST FUNCTION EC-379
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Revision: 2006 July 2007 FX35/FX45
5. CHECK FUEL INJECTOR
1. Stop engine and then turn ignition switch ON.
2. Check voltage between ECM terminals 21, 22, 23, 40, 41, 42 and ground with CONSULT-II or tester.
Refer to Wiring Diagram for fuel injector, EC-630, "
Wiring Dia-
gram" .
OK or NG
OK >> GO TO 6.
NG >> Perform EC-631, "
Diagnostic Procedure" .
6. CHECK FUNCTION OF IGNITION COIL-I
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Reconnect ECM harness connector disconnected.
3. Remove fuel pump fuse in IPDM E/R to release fuel pressure. NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
4. Start engine.
5. After engine stalls, crank it two or three times to release all fuel pressure.
6. Turn ignition switch OFF.
7. Remove all ignition coil harness connectors to avoid the electri- cal discharge from the ignition coils.
8. Remove ignition coil and spark plug of the cylinder to be checked.
9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
10. Connect spark plug and harness connector to ignition coil.
11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm between the edge of the spark plug and grounded metal portion
as shown in the figure.
12. Crank engine for about 3 seconds, and check whether spark is generated between the spark plug and the grounded metal por-
tion.
CAUTION:
Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.
It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
OK or NG
OK >> GO TO 10.
NG >> GO TO 7. Voltage: Battery voltage
PBIB2250E
Spark should be generated.
PBIB1603E
PBIB2325E

Page 1756 of 4366

INFINITI FX35 2007 Service Manual EC-380
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DTC P0420, P0430 THREE WAY CATALYST FUNCTION
Revision: 2006 July 2007 FX35/FX45
7. CHECK FUNCTION OF IGNITION COIL-II
1. Turn ignition switch OFF.
2. Disconnect spark plug and connec

Page 1757 of 4366

INFINITI FX35 2007 Service Manual DTC P0420, P0430 THREE WAY CATALYST FUNCTION EC-381
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Revision: 2006 July 2007 FX35/FX45
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-147, "
TROUBLE

Page 1758 of 4366

INFINITI FX35 2007 Service Manual EC-382
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2006 July 2007 FX35/FX45
DTC P0441 EVAP CONTROL SYSTEMPFP:14950
System DescriptionNBS003QS
NOTE:
If DTC P0441 is displayed with other DTC such

Page 1759 of 4366

INFINITI FX35 2007 Service Manual DTC P0441 EVAP CONTROL SYSTEM EC-383
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Revision: 2006 July 2007 FX35/FX45
Always perform test at a temperature of 5°C (41 °F) or more.
WITH CONSULT-II

DTC P0441 EVAP CONTROL SYSTEM EC-383
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Revision: 2006 July 2007 FX35/FX45
Always perform test at a temperature of 5°C (41 °F) or more.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and let it idle for at least 70 seconds.
4. Select “PURG FLOW P0441” of “EVAPORATIVE SYSTEM” in “DTC CONFIRMATION” mode with CON- SULT-II.
5. Touch “START”. If “COMPLETED” is displayed, go to step 7.
6. When the following conditions are met, “TESTING” will be displayed on the CONSULT-II screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take at least 35 seconds.)
If “TESTING” is not changed for a long time, retry from step 2.
7. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-
384, "Diagnostic Procedure" .
Overall Function CheckNBS003QV
Use this procedure to check the overall monitoring function of the EVAP control system purge flow monitoring.
During this check, a 1st trip DTC might not be confirmed.
WITH GST
1. Lift up drive wheels.
2. Start engine (TCS switch or VDC switch OFF) and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM terminals 32 (EVAP control system pressure sensor signal) and ground.
6. Check EVAP control system pressure sensor value at idle speed and note it.
7. Establish and maintain the following conditions for at least 1 minute.
Selector lever Suitable position
VHCL SPEED SE 32 - 120 km/h (20 - 75 MPH)
ENG SPEED 500 - 3,000 rpm
B/FUEL SCHDL 1.3 - 9.0 msec
COOLAN TEMP/S 70 - 100 °C (158 - 212 °F)
PBIB0826E
Air conditioner switch ON
Headlamp switch ON
Rear window defogger switch ON
Engine speed Approx. 3,000 rpm
Selector lever Any position other than P, N or R
PBIB1109E

Page 1760 of 4366

INFINITI FX35 2007 Service Manual EC-384
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DTC P0441 EVAP CONTROL SYSTEM
Revision: 2006 July 2007 FX35/FX45
8. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (mea-
sured at s

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