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EC-864
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DTC U1000, U1001 CAN COMMUNICATION LINE
Revision: 2005 July 2005 FX
Diagnostic ProcedureABS007IN
Go to LAN-5, "PRECAUTIONS" .
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DTC P0011, P0021 IVT CONTROLPFP:23796
DescriptionABS007IO
SYSTEM DESCRIPTION
*: This si INFINITI FX35 2005 Service Manual DTC P0011, P0021 IVT CONTROL EC-865
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DTC P0011, P0021 IVT CONTROLPFP:23796
DescriptionABS007IO
SYSTEM DESCRIPTION
*: This si](/manual-img/42/57020/w960_57020-2257.png)
DTC P0011, P0021 IVT CONTROL EC-865
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DTC P0011, P0021 IVT CONTROLPFP:23796
DescriptionABS007IO
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN communication line
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
COMPONENT INSPECTION
Intake Valve Timing Control Solenoid Valve
Intake Valve Timing (IVT) control solenoid valve is activated by ON/
OFF pulse duty (ratio) signals from the ECM.
The IVT control solenoid valve changes the oil amount and direction
of flow through intake valve timing control unit or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
Sensor Input signal to ECM function ECM Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed
Intake valve
timing control Intake valve timing control
solenoid valve
Intake valve timing control position sensor Intake valve timing signal
Engine coolant temperature sensor Engine coolant temperature
Wheel sensor* Vehicle speed
PBIB1102E
PBIB1842E
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![INFINITI FX35 2005 Service Manual EC-866
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
Intake Valve Timing Control Position Sensor
Intake valve timing control position sensors are located in the front of
cylinder INFINITI FX35 2005 Service Manual EC-866
[VK45DE]
DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
Intake Valve Timing Control Position Sensor
Intake valve timing control position sensors are located in the front of
cylinder](/manual-img/42/57020/w960_57020-2258.png)
EC-866
[VK45DE]
DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
Intake Valve Timing Control Position Sensor
Intake valve timing control position sensors are located in the front of
cylinder heads in both bank 1 and bank 2.
This sensor uses a Hall IC.
The cam position is determined by the intake primary cam sprocket
concave (in three places). The ECM provides feedback to the intake
valve timing control for appropriate target valve open-close timing
according to drive conditions based on detected cam position.
CONSULT-II Reference Value in Data Monitor ModeABS007IP
Specification data are reference values.
On Board Diagnosis LogicABS007IQ
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
SEF359Z
MONITOR ITEM CONDITION SPECIFICATION
INT/V TIM (B1)
INT/V TIM (B2)
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No load Idle
−5° - 5 °CA
2,000 rpm Approx. 0 ° - 20 °CA
INT/V SOL (B1)
INT/V SOL (B2)
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No load Idle 0% - 2%
2,000 rpm Approx. 25% - 50%
DTC No. Trouble diagnosis name Detecting condition Possible cause
P0011
0011
(Bank 1)
Intake valve timing control
performance A
The alignment of the intake valve timing
control has been misresistered.
Harness or connectors
(Intake valve timing control solenoid
valve circuit is open or shorted.)
Harness or connectors
(Intake valve timing control position
sensor circuit is open or shorted.)
Intake valve timing control solenoid
valve
Intake valve timing control position
sensor
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Accumulation of debris to the signal
pick-up portion of the camshaft
sprocket
Timing chain installation
Foreign matter caught in the oil
groove for intake valve timing control
P0021
0021
(Bank 2) B
There is a gap between angle of target
and phase-control angle degree.
Detected items Engine operating condition in fail-safe mode
Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function
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DTC Confirmation ProcedureABS007IR
CAUTION:
Always drive at a safe speed.
NOTE:
If D INFINITI FX35 2005 Service Manual DTC P0011, P0021 IVT CONTROL EC-867
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DTC Confirmation ProcedureABS007IR
CAUTION:
Always drive at a safe speed.
NOTE:
If D](/manual-img/42/57020/w960_57020-2259.png)
DTC P0011, P0021 IVT CONTROL EC-867
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DTC Confirmation ProcedureABS007IR
CAUTION:
Always drive at a safe speed.
NOTE:
If DTC P0011 or P0021 is displayed with DTC P1111, P1136, P1140 or P1145, first perform the trou-
ble diagnosis for EC-1141
or EC-1166 .
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 10V and 16V at
idle.
PROCEDURE FOR MALFUNCTION A
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Maintain the following conditions for at least 10 consecutive sec- onds.
4. Maintain the following conditions for at least 20 consecutive sec- onds.
5. If the 1st trip DTC is detected, go to EC-871, "
Diagnostic Procedure" .
With GST
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR MALFUNCTION B
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Maintain the following conditions for at least 10 consecutive sec- onds.
4. If the 1st trip DTC is detected, go to EC-871, "
Diagnostic Proce-
dure" .
With GST
Follow the procedure “With CONSULT-II” above.
ENG SPEED More than 2,000 rpm (A constant rotation is maintained.)
COOLAN TEMP/S More than 70 °C (158 °F)
Selector lever 1st or 2nd position
Driving location uphill Driving vehicle uphill
(Increased engine load will help maintain the driving con-
ditions required for this test.)
ENG SPEED Idle
COOLAN TEMP/S More than 70 °C (158 °F)
Selector lever P or N position
SEF353Z
ENG SPEED 1,700 - 3,175 rpm (A constant rotation is maintained.)
COOLAN TEMP/S 70 - 105 °C (158 - 221 °F)
Selector lever 1st or 2nd position
Driving location uphill Driving vehicle uphill
(Increased engine load will help maintain the driving con-
ditions required for this test.)
SEF353Z
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EC-868
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
Wiring DiagramABS007IS
BANK 1
TBWM0845E
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DTC P0011, P0021 IVT CONTROL EC-869
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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)
10 OR Intake valve timing control
solenoid valve (bank 1) [Engine is running]
Warm-up condition
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed: 2,000rpm 7 - 12V
72 BR Intake valve timing control
position sensor (bank 1) [Engine is running]
Warm-up condition
Idle speed
0 - 1.0V
[Engine is running]
Engine speed: 2,000rpm 0 - 1.0V
PBIB1790E
PBIB2046E
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EC-870
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DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
BANK 2
TBWM0846E
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Specification data are reference values and are measured between each terminal and grou INFINITI FX35 2005 Service Manual DTC P0011, P0021 IVT CONTROL EC-871
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Specification data are reference values and are measured between each terminal and grou](/manual-img/42/57020/w960_57020-2263.png)
DTC P0011, P0021 IVT CONTROL EC-871
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Revision: 2005 July 2005 FX
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.)
Diagnostic ProcedureABS00E4Q
1. CHECK OIL PRESSURE WARNING LAMP
1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illumi- nated.
OK or NG
OK >> GO TO 2.
KG >> Go to LU-25, "
OIL PRESSURE CHECK" .
TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
11 B R Intake valve timing control
solenoid valve (bank 2) [Engine is running]
Warm-up condition
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed: 2,000rpm 7 - 12V
53 R/L Intake valve timing control
position sensor (bank 2) [Engine is running]
Warm-up condition
Idle speed
0 - 1.0V
[Engine is running]
Engine speed: 2,000 rpm 0 - 1.0V
PBIB1790E
PBIB2046E
PBIA8559J