2004 INFINITI FX35 Service Manual

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Page 2473 of 4449

INFINITI FX35 2004 Service Manual EC-1132
[VK45DE]
DTC P1147, P1167 HO2S2
Revision: 2004 November 2004 FX35/FX45
BANK 2
TBWM0231E

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INFINITI FX35 2004 Service Manual DTC P1147, P1167 HO2S2
EC-1133
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Revision: 2004 November 2004 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUT

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INFINITI FX35 2004 Service Manual EC-1134
[VK45DE]
DTC P1147, P1167 HO2S2
Revision: 2004 November 2004 FX35/FX45
2. CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Selec

Page 2476 of 4449

INFINITI FX35 2004 Service Manual DTC P1147, P1167 HO2S2
EC-1135
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Revision: 2004 November 2004 FX35/FX45
3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect hea

Page 2477 of 4449

INFINITI FX35 2004 Service Manual EC-1136
[VK45DE]
DTC P1147, P1167 HO2S2
Revision: 2004 November 2004 FX35/FX45
5. CHECK HEATED OXYGEN SENSOR 2
Refer to EC-1136, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace malfunc

Page 2478 of 4449

INFINITI FX35 2004 Service Manual DTC P1147, P1167 HO2S2
EC-1137
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Revision: 2004 November 2004 FX35/FX45
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
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Page 2479 of 4449

INFINITI FX35 2004 Service Manual EC-1138
[VK45DE]
DTC P1148, P1168 CLOSED LOOP CONTROL
Revision: 2004 November 2004 FX35/FX45
DTC P1148, P1168 CLOSED LOOP CONTROLPFP:22690
On Board Diagnosis LogicABS00CAE
These self-diagnoses have th

EC-1138
[VK45DE]
DTC P1148, P1168 CLOSED LOOP CONTROL
Revision: 2004 November 2004 FX35/FX45
DTC P1148, P1168 CLOSED LOOP CONTROLPFP:22690
On Board Diagnosis LogicABS00CAE
These self-diagnoses have the one trip detection logic.
DTC Confirmation ProcedureABS00CAF
CAUTION:
Always drive vehicle at a safe speed.
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.
TESTING CONDITION:
Do not raise engine speed above 3,000 rpm during the DTC Confirmation Procedure. If the engine
speed limit is exceeded, retry the procedure from step 2.
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Hold engine speed at 2,000 rpm and check one of the following.
–“HO2S1 (B1)/(B2)” voltage should go above 0.70V at least once.
–“HO2S1 (B1)/(B2)” voltage should go below 0.21V at least once.
If the check result is NG, perform EC-1139, "
Diagnostic Proce-
dure" .
If the check result is OK, perform the following step.
4. Let engine idle at least 5 minutes.
5. Maintain the following condition at least 50 consecutive sec-
onds.
During this test, P0132 and/or P0152 may be displayed on CONSULT-II screen.
6. If DTC is detected, go to EC-1139, "
Diagnostic Procedure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1148
1148
(Bank 1)
Closed loop control
functionThe closed loop control function for bank 1
does not operate even when vehicle is driving
in the specified condition.
The heated oxygen sensor 1 circuit is
open or shorted.
Heated oxygen sensor 1
Heated oxygen sensor heater P1168
1168
(Bank 2)The closed loop control function for bank 2
does not operate even when vehicle is driving
in the specified condition.
B/FUEL SCHDL 4.0 msec or more
ENG SPEED More than 1,300 rpm
Selector lever Suitable position
VHCL SPEED SE More than 70 km/h (43 MPH)SEC011C

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INFINITI FX35 2004 Service Manual DTC P1148, P1168 CLOSED LOOP CONTROL
EC-1139
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Revision: 2004 November 2004 FX35/FX45
Overall Function CheckABS00CAG
Use this procedure to check the overall function o

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