Page 1643 of 4366
![INFINITI FX35 2007 Service Manual DTC P0133, P0153 A/F SENSOR 1 EC-267
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8. CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT](/manual-img/42/57018/w960_57018-1642.png "INFINITI FX35 2007 Service Manual DTC P0133, P0153 A/F SENSOR 1 EC-267
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
8. CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT")
DTC P0133, P0153 A/F SENSOR 1 EC-267
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
8. CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals. Refer to Wiring Diagram.
4. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Refer to EC-171, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 13.
10. CHECK MASS AIR FLOW SENSOR
Refer to EC-194, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace mass air flow sensor.
A/F sensor 1 terminal ECM terminal
Bank1 116
275
535
656
Bank 2 176
277
557
658
Continuity should exist.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 116176
275277
535557
656658
Continuity should not exist.
Page 1649 of 4366
![INFINITI FX35 2007 Service Manual DTC P0137, P0157 HO2S2 EC-273
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro](/manual-img/42/57018/w960_57018-1648.png "INFINITI FX35 2007 Service Manual DTC P0137, P0157 HO2S2 EC-273
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro")
DTC P0137, P0157 HO2S2 EC-273
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
25 P Heated oxygen sensor 2
heater (bank 1) [Engine is running]
Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
74 LG/B Heated oxygen sensor 2
(bank 1) [Engine is running]
Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - Approximately 1.0V
78 B/R Sensor ground
(Heated oxygen sensor) [Engine is running]
Warm-up condition
Idle speed
Approximately 0V
Page 1651 of 4366
![INFINITI FX35 2007 Service Manual DTC P0137, P0157 HO2S2 EC-275
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro](/manual-img/42/57018/w960_57018-1650.png "INFINITI FX35 2007 Service Manual DTC P0137, P0157 HO2S2 EC-275
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro")
DTC P0137, P0157 HO2S2 EC-275
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS003U5
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-153, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
6R Heated oxygen sensor 2
heater (bank 2) [Engine is running]
Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
55 W/R Heated oxygen sensor 2
(bank 2) [Engine is running]
Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - Approximately 1.0V
78 B/R Sensor ground
(Heated oxygen sensor) [Engine is running]
Warm-up condition
Idle speed
Approximately 0V
PBIB2625E
Page 1660 of 4366
![INFINITI FX35 2007 Service Manual EC-284
[VQ35DE]
DTC P0138, P0158 HO2S2
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground te](/manual-img/42/57018/w960_57018-1659.png "INFINITI FX35 2007 Service Manual EC-284
[VQ35DE]
DTC P0138, P0158 HO2S2
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground te")
EC-284
[VQ35DE]
DTC P0138, P0158 HO2S2
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
25 P Heated oxygen sensor 2
heater (bank 1) [Engine is running]
Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
74 LG/B Heated oxygen sensor 2
(bank 1) [Engine is running]
Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - Approximately 1.0V
78 B/R Sensor ground
(Heated oxygen sensor) [Engine is running]
Warm-up condition
Idle speed
Approximately 0V
Page 1662 of 4366
![INFINITI FX35 2007 Service Manual EC-286
[VQ35DE]
DTC P0138, P0158 HO2S2
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground te](/manual-img/42/57018/w960_57018-1661.png "INFINITI FX35 2007 Service Manual EC-286
[VQ35DE]
DTC P0138, P0158 HO2S2
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground te")
EC-286
[VQ35DE]
DTC P0138, P0158 HO2S2
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS003OS
PROCEDURE FOR MALFUNCTION A
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-153, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
6R Heated oxygen sensor 2
heater (bank 2) [Engine is running]
Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
55 W/R Heated oxygen sensor 2
(bank 2) [Engine is running]
Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - Approximately 1.0V
78 B/R Sensor ground
(Heated oxygen sensor) [Engine is running]
Warm-up condition
Idle speed
Approximately 0V
PBIB2625E
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![INFINITI FX35 2007 Service Manual DTC P0139, P0159 HO2S2 EC-297
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro](/manual-img/42/57018/w960_57018-1672.png "INFINITI FX35 2007 Service Manual DTC P0139, P0159 HO2S2 EC-297
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro")
DTC P0139, P0159 HO2S2 EC-297
[VQ35DE]
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D E
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
25 P Heated oxygen sensor 2
heater (bank 1) [Engine is running]
Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
74 LG/B Heated oxygen sensor 2
(bank 1) [Engine is running]
Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - Approximately 1.0V
78 B/R Sensor ground
(Heated oxygen sensor) [Engine is running]
Warm-up condition
Idle speed
Approximately 0V
Page 1675 of 4366
![INFINITI FX35 2007 Service Manual DTC P0139, P0159 HO2S2 EC-299
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro](/manual-img/42/57018/w960_57018-1674.png "INFINITI FX35 2007 Service Manual DTC P0139, P0159 HO2S2 EC-299
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and gro")
DTC P0139, P0159 HO2S2 EC-299
[VQ35DE]
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D E
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G H
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M A
EC
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS003P1
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-153, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
6R Heated oxygen sensor 2
heater (bank 2) [Engine is running]
Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]
Engine stopped
[Engine is running]
Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
55 W/R Heated oxygen sensor 2
(bank 2) [Engine is running]
Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - Approximately 1.0V
78 B/R Sensor ground
(Heated oxygen sensor) [Engine is running]
Warm-up condition
Idle speed
Approximately 0V
PBIB2625E
Page 1683 of 4366
![INFINITI FX35 2007 Service Manual DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION EC-307
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured betw](/manual-img/42/57018/w960_57018-1682.png "INFINITI FX35 2007 Service Manual DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION EC-307
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured betw")
DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION EC-307
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
2R/L A/F sensor 1 heater
(bank 1) [Engine is running]
Warm-up condition
Idle speed Approximately 5V
16 G A/F sensor 1 (bank 1) [Engine is running]
Warm-up condition
Idle speed Approximately 3.1V
35 B/R Approximately 2.6V
56 L Approximately 2.3V
75 R/B Approximately 2.3V
21
22
23 W
G
R Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1 [Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14V)
PBIB1584E
SEC984C
SEC985C