2005 INFINITI FX35 Service Manual

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Page 1833 of 4731

INFINITI FX35 2005 Service Manual EC-440
[VQ35DE]
DTC P1128 THROTTLE CONTROL MOTOR
Revision: 2005 July 2005 FX
2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect electric throttle control actuator h

Page 1834 of 4731

INFINITI FX35 2005 Service Manual DTC P1128 THROTTLE CONTROL MOTOR EC-441
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Revision: 2005 July 2005 FX
Removal and InstallationABS006TX
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-19,

Page 1835 of 4731

INFINITI FX35 2005 Service Manual EC-442
[VQ35DE]
DTC P1146, P1166 HO2S2
Revision: 2005 July 2005 FX
DTC P1146, P1166 HO2S2PFP:226A0
Component DescriptionABS006UE
The heated oxygen sensor 2, after three way catalyst 1, monitors the
o

Page 1836 of 4731

INFINITI FX35 2005 Service Manual DTC P1146, P1166 HO2S2 EC-443
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Revision: 2005 July 2005 FX
DTC Confirmation ProcedureABS006UH
NOTE:
If DTC confirmation Procedure has been previously c

DTC P1146, P1166 HO2S2 EC-443
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Revision: 2005 July 2005 FX
DTC Confirmation ProcedureABS006UH
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.
WITH CONSULT-II
TESTING CONDITION:
For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30 °C (32 to 86 °F).
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II.
2. Start engine and warm it up to the normal operating tempera- ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Make sure that “COOLAN TEMP/S” indicates more than 70 °C
(158 °F).
If not, warm up engine and go to next step when “COOLAN
TEMP/S” indication reaches to 70 °C (158 °F).
7. Open engine hood.
8. Select “HO2S2 (B1) P1146” or “HO2S2 (B2) P1166” of “HO2S2” in “DTC WORK SUPPORT” mode with CONSULT-II.
9. Start engine and following the instruction of CONSULT-II.
NOTE:
It will take at most 10 minutes until “COMPLETED” is displayed.
10. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to EC-448, "
Diagnostic Procedure" .
If “CAN NOT BE DIAGNOSED” is displayed, perform the following.
a. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
b. Return to step 1.
Overall Function CheckABS006UI
Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st
trip DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and ground.
SEF174Y
PBIB2372E

Page 1837 of 4731

INFINITI FX35 2005 Service Manual EC-444
[VQ35DE]
DTC P1146, P1166 HO2S2
Revision: 2005 July 2005 FX
6. Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as

Page 1838 of 4731

INFINITI FX35 2005 Service Manual DTC P1146, P1166 HO2S2 EC-445
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Revision: 2005 July 2005 FX
Wiring DiagramABS006UJ
BANK 1
TBWM0292E

Page 1839 of 4731

INFINITI FX35 2005 Service Manual EC-446
[VQ35DE]
DTC P1146, P1166 HO2S2
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals

Page 1840 of 4731

INFINITI FX35 2005 Service Manual DTC P1146, P1166 HO2S2 EC-447
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Revision: 2005 July 2005 FX
BANK 2
TBWM0293E

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