2007 INFINITI FX35 Service Manual

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Page 2561 of 4366

INFINITI FX35 2007 Service Manual DTC P1225 TP SENSOR EC-1185
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Revision: 2006 July 2007 FX35/FX45
DTC P1225 TP SENSORPFP:16119
Component DescriptionNBS004D0
Electric throttle control act

Page 2562 of 4366

INFINITI FX35 2007 Service Manual EC-1186
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DTC P1225 TP SENSOR
Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS004D3
1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the i

Page 2563 of 4366

INFINITI FX35 2007 Service Manual DTC P1226 TP SENSOR EC-1187
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Revision: 2006 July 2007 FX35/FX45
DTC P1226 TP SENSORPFP:16119
Component DescriptionNBS004D5
Electric throttle control act

Page 2564 of 4366

INFINITI FX35 2007 Service Manual EC-1188
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DTC P1226 TP SENSOR
Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS004D8
1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the i

Page 2565 of 4366

INFINITI FX35 2007 Service Manual DTC P1421 COLD START CONTROL EC-1189
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Revision: 2006 July 2007 FX35/FX45
DTC P1421 COLD START CONTROLPFP:23710
DescriptionNBS006S1
ECM controls ignition

DTC P1421 COLD START CONTROL EC-1189
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Revision: 2006 July 2007 FX35/FX45
DTC P1421 COLD START CONTROLPFP:23710
DescriptionNBS006S1
ECM controls ignition timing and engine idle speed when engine is started with prewarming up condition.
This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.
On Board Diagnosis LogicNBS006S2
DTC Confirmation ProcedureNBS006S3
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
If DTC P1421 is displayed with other DTC, first perform the trouble diagnosis for other DTC.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Select “DATA MONITOR” mode with CONSULT-II.
4. Check that the “COOLAN TEMP/S” indication is between 4 °C
(39 °F) and 36 °C (97 °F).
If “COOLAN TEMP/S” indication is within the specified value, go
to the following step.
If “COOLANT TEMP/S” indication is out of the specified value,
cool engine down or warm engine up and go to step 1.
5. Start engine and let it idle for 5 minutes.
6. If 1st trip DTC is detected, go to EC-1189, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureNBS006S4
1. PERFORM IDLE AIR VOLUME LEARNING
Perform EC-745, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Ye s > > G O T O 2 .
No >> Follow the instruction of Idle Air Volume Learning.
2. CHECK INTAKE SYSTEM
Check for the cause of intake air volume lacking. Refer to the following.
Crushed intake air passage
Intake air passage clogging
OK or NG
OK >> GO TO 3.
NG >> Repair or replace malfunctioning part
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1421
1421 Cold start emission reduction
strategy monitoring ECM does not control ignition timing and engine
idle speed properly when engine is started with
prewarming up condition.
Lack of intake air volume
Fuel injection system
ECM
SEF174Y

Page 2566 of 4366

INFINITI FX35 2007 Service Manual EC-1190
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DTC P1421 COLD START CONTROL
Revision: 2006 July 2007 FX35/FX45
3. CHECK FUEL INJECTION SYSTEM FUNCTION
Perform EC-976, "
DTC Confirmation Procedure" in DTC P0171, P0174 FUEL INJE

Page 2567 of 4366

INFINITI FX35 2007 Service Manual DTC P1564 ICC STEERING SWITCH EC-1191
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Revision: 2006 July 2007 FX35/FX45
DTC P1564 ICC STEERING SWITCHPFP:25551
Component DescriptionNBS004DT
ICC steer

Page 2568 of 4366

INFINITI FX35 2007 Service Manual EC-1192
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DTC P1564 ICC STEERING SWITCH
Revision: 2006 July 2007 FX35/FX45
DTC Confirmation ProcedureNBS004DW
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ign

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