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![INFINITI FX35 2005 Service Manual EC-872
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
2. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. Refer to INFINITI FX35 2005 Service Manual EC-872
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
2. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. Refer to](/manual-img/42/57020/w960_57020-2264.png)
EC-872
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
2. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. Refer to EC-861, "
Ground Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace ground connections.
3. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR POWER SUPPLY CIRCUIT
1. Disconnect intake valve timing control position sensor harness connector.
2. Turn ignition switch ON.
3. Check voltage between intake valve timing control position sen- sor terminal 3 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E211, M41
Harness connectors F102, M82
Harness for open or short between intake valve timing control position sensor and ECM
Harness for open or short between intake valve timing control position sensor and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB2195E
Voltage: Battery voltage
PBIB1517E
SEF509Y
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5. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT INFINITI FX35 2005 Service Manual DTC P0011, P0021 IVT CONTROL EC-873
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5. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT](/manual-img/42/57020/w960_57020-2265.png)
DTC P0011, P0021 IVT CONTROL EC-873
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5. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between intake valve timing control position sensor terminal 1 and ground. Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors F102, M82
Harness for open or short between intake valve timing control position sensor and ground
>> Repair open circuit or short to power in harness or connectors.
7. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN
AND SHORT 1. Disconnect ECM harness connector.
2. Check harness continuity between the following; ECM terminal 72 and intake valve timing control position sensor (bank 1) terminal 2 or
ECM terminal 53 and intake valve timing control position sensor (bank 2) terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR
Refer to EC-875, "
Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace intake valve timing control position sensor. Continuity should exist.
Continuity should exist.
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![INFINITI FX35 2005 Service Manual EC-874
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
9. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Reconnect ECM harness connector.
2. Disconnect in INFINITI FX35 2005 Service Manual EC-874
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
9. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Reconnect ECM harness connector.
2. Disconnect in](/manual-img/42/57020/w960_57020-2266.png)
EC-874
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DTC P0011, P0021 IVT CONTROL
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9. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Reconnect ECM harness connector.
2. Disconnect intake valve timing control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check voltage between intake valve timing control solenoid valve terminal 2 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10.
10. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E19, F49
Harness for open or short between intake valve timing control solenoid valve and IPDM E/R.
>> Repair open circuit or short to ground or short to power in harness or connectors.
11 . CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR
OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between the following; ECM terminal 10 and intake valve timing control solenoid valve (bank 1) terminal 1 or
ECM terminal 11 and intake valve timing control solenoid valve (bank 2) terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 12.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
12. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-875, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace intake valve timing control solenoid valve. Voltage: Battery voltage
PBIB1517E
PBIB0192E
Continuity should exist.
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13. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-1042, "
Component Inspection" INFINITI FX35 2005 Service Manual DTC P0011, P0021 IVT CONTROL EC-875
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13. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-1042, "
Component Inspection"](/manual-img/42/57020/w960_57020-2267.png)
DTC P0011, P0021 IVT CONTROL EC-875
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13. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-1042, "
Component Inspection" .
OK or NG
OK >> GO TO 14.
NG >> Replace crankshaft position sensor (POS).
14. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-1049, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace camshaft position sensor (PHASE).
15. CHECK CAMSHAFT SPROCKET
Check accumulation of debris to the signal pick-up portion of the camshaft sprocket. Refer to EM-212, "
CAM-
SHAFT" .
OK or NG
OK >> GO TO 16.
NG >> Remove debris and clean the signal pick-up cutout of camshaft sprocket.
16. CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misaligned.
Are there any service records that may cause timing chain misaligned?
Ye s o r N o
Yes >> Check timing chain installation. Refer to EM-200, "TIMING CHAIN" .
No >> GO TO 17.
17. CHECK LUBRICATION CIRCUIT
Refer to EM-218, "
Inspection of Camshaft Sprocket (INT) Oil Groove" .
OK or NG
OK >> GO TO 18.
NG >> Clean lubrication line.
18. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component InspectionABS007IU
INTAKE VALVE TIMING CONTROL POSITION SENSOR
1. Disconnect intake valve timing control position sensor harness connector.
2. Loosen the fixing bolt of the sensor.
3. Remove the sensor.
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![INFINITI FX35 2005 Service Manual EC-876
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
4. Visually check the sensor for chipping.
5. Check resistance as shown below.
6. If NG, replace intake valve timing control INFINITI FX35 2005 Service Manual EC-876
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DTC P0011, P0021 IVT CONTROL
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4. Visually check the sensor for chipping.
5. Check resistance as shown below.
6. If NG, replace intake valve timing control](/manual-img/42/57020/w960_57020-2268.png)
EC-876
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
4. Visually check the sensor for chipping.
5. Check resistance as shown below.
6. If NG, replace intake valve timing control position sensor.
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
1. Disconnect intake valve timing control solenoid valve harness connector.
2. Check resistance between intake valve timing control solenoid valve terminals as follows.
If NG, replace intake valve timing control solenoid valve.
If OK, go to next step.
3. Remove intake valve timing control solenoid valve.
4. Provide 12V DC between intake valve timing control solenoid valve terminals and then interrupt it. Make sure that the plunger
moves as shown in the figure.
CAUTION:
Do not apply 12V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
If NG, replace intake valve timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Removal and InstallationABS007IV
INTAKE VALVE TIMING CONTROL POSITION SENSOR
Refer to EM-200, "TIMING CHAIN" .
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EM-200, "TIMING CHAIN" .
SEF362Z
Terminal No. (Polarity) Resistance Ω [at 25 °C (77 °F)]
3 (+) - 1 (-) Except 0 or ∞
2 (+) - 1 (-)
3 (+) - 2 (-)
PBIB0194E
Terminals Resistance
1 and 2 7.0 - 7.5 Ω [at 20 °C (68 °F)]
1 or 2 and ground ∞Ω
(Continuity should not exist)
PBIB0193E
PBIB2275E
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![INFINITI FX35 2005 Service Manual DTC P0031, P0032, P0051, P0052 HO2S1 HEATER EC-877
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DTC P0031, P0032, P0051, P0052 HO2S1 HEATERPFP:22690
DescriptionABS007IW INFINITI FX35 2005 Service Manual DTC P0031, P0032, P0051, P0052 HO2S1 HEATER EC-877
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DTC P0031, P0032, P0051, P0052 HO2S1 HEATERPFP:22690
DescriptionABS007IW](/manual-img/42/57020/w960_57020-2269.png)
DTC P0031, P0032, P0051, P0052 HO2S1 HEATER EC-877
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DTC P0031, P0032, P0051, P0052 HO2S1 HEATERPFP:22690
DescriptionABS007IW
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 1 heater corresponding to the engine speed
and engine coolant temperature. The duty percent varies with engine coolant temperature when engine is
started.
OPERATION
CONSULT-II Reference Value in Data Monitor ModeABS007IX
Specification data are reference values.
On Board Diagnosis LogicABS007IY
Sensor Input signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS) Engine speed
Heated oxygen sensor 1
heater control Heated oxygen sensor 1 heater
Engine coolant temperature sensor Engine coolant temperature
Engine speed rpm Heated oxygen sensor 1 heater
Above 3,000 OFF
Below 3,000 after warming up ON
MONITOR ITEM CONDITION SPECIFICATION
HO2S1 HTR (B1)
HO2S1 HTR (B2)
Engine: After warming up
Engine speed: Below 3,000 rpm ON
Engine speed: Above 3,000 rpm OFF
DTC No.
Trouble diagnosis
name DTC detecting condition Possible cause
P0031
0031
(Bank 1) Heated oxygen
sensor 1 heater
control circuit low The current amperage in the heated oxygen
sensor 1 heater circuit is out of the normal
range.
(An excessively low voltage signal is sent to
ECM through the heated oxygen sensor 1
heater.)
Harness or connectors
(The heated oxygen sensor 1 heater circuit is
open or shorted.)
Heater oxygen sensor 1 heater
P0051
0051
(Bank 2)
P0032
0032
(Bank 1) Heated oxygen
sensor 1 heater
control circuit high The current amperage in the heated oxygen
sensor 1 heater circuit is out of the normal
range.
(An excessively high voltage signal is sent to
ECM through the heated oxygen sensor 1
heater.)
Harness or connectors
(The heated oxygen sensor 1 heater circuit is
shorted.)
Heater oxygen sensor 1 heater
P0052
0052
(Bank 2)
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EC-878
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DTC P0031, P0032, P0051, P0052 HO2S1 HEATER
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DTC Confirmation ProcedureABS007IZ
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:
Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at
idle.
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. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II.
4. Start engine and run it for at least 6 seconds at idle speed.
5. If 1st trip DTC is detected, go to EC-882, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
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DTC P0031, P0032, P0051, P0052 HO2S1 HEATER EC-879
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Wiring DiagramABS007J0
BANK 1
TBWM0221E