Infiniti FX35 / FX45. Manual - part 347

DTC P0011, P0021 IVT CONTROL

EC-149

< SERVICE INFORMATION >

[VQ35DE]

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DTC P0011, P0021 IVT CONTROL

Description

INFOID:0000000001325958

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 control solenoid
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.

CONSULT-III Reference Value in Data Monitor Mode

INFOID:0000000001325959

Specification data are reference values.

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

Engine speed and piston position

Intake valve 
timing control

Intake valve timing control 
solenoid valve

Camshaft position sensor (PHASE)

Engine coolant temperature sensor

Engine coolant temperature

Wheel sensor

Vehicle speed*

PBIB3276E

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

When revving engine up to 2,000 rpm 
quickly

Approx. 0

°

 - 30

°

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%

When revving engine up to 2,000 rpm 
quickly

Approx. 0% - 50%

EC-150

< SERVICE INFORMATION >

[VQ35DE]

DTC P0011, P0021 IVT CONTROL

On Board Diagnosis Logic

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FAIL-SAFE MODE

When the malfunction is detected, the ECM enters fail-safe mode.

DTC Confirmation Procedure

INFOID:0000000001325961

CAUTION:

Always drive at a safe speed.
NOTE:
• If DTC P0011 or P0021 is displayed with DTC P0075 or P0081, first perform trouble diagnosis for DTC

P0075 or P0081. Refer to 

EC-168

.

• 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.

 WITH CONSULT-III

1.

Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.

2.

Start engine and warm it up to the normal operating temperature.

3.

Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady
as possible.

4.

Let engine idle for 10 seconds.

5.

Check 1st trip DTC.

6.

If 1st trip DTC is detected, go to 

EC-151, "Diagnosis Procedure"

. 

If 1st trip DTC is not detected, go to next step. 

7.

Maintain the following conditions for at least 20 consecutive seconds.

DTC No.

Trouble diagnosis 

name

Detecting condition

Possible cause

P0011
0011
(Bank 1)

Intake valve timing 
control performance

There is a gap between angle of target and 
phase-control angle degree.

• Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE)
• Intake valve control solenoid valve
• Accumulation of debris to the signal pick-up 

portion of the camshaft

• Timing chain installation
• Foreign matter caught in the oil groove for in-

take valve timing control

P0021
0021
(Bank 2)

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.

VHCL SPEED SE

100 - 120 km/h (63 - 75 MPH)

ENG SPEED

1,200 - 2,000 rpm

COOLAN TEMP/S

More than 60

°

C (140

°

F)

B/FUEL SCHDL

More than 7.26 msec

Selector lever

D position

ENG SPEED

1,700 - 3,175 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 
conditions required for this test.)

DTC P0011, P0021 IVT CONTROL

EC-151

< SERVICE INFORMATION >

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8.

Check 1st trip DTC.

9.

If 1st trip DTC is detected, go to 

EC-151, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

INFOID:0000000001325962

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.

NG

>> Go to 

LU-5, "Inspection"

.

2.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to 

EC-152, "Component Inspection"

.

OK or NG

OK

>> GO TO 3.

NG

>> Replace malfunctioning intake valve timing control solenoid valve.

3.

CHECK CRANKSHAFT POSITION SENSOR (POS)

Refer to 

EC-323, "Component Inspection"

.

OK or NG

OK

>> GO TO 4.

NG

>> Replace crankshaft position sensor (POS).

4.

CHECK CAMSHAFT POSITION SENSOR (PHASE)

Refer to 

EC-330, "Component Inspection"

.

OK or NG

OK

>> GO TO 5.

NG

>> Replace malfunctioning camshaft position sensor (PHASE).

5.

CHECK CAMSHAFT (INT)

Check the following.
• Accumulation of debris to the signal plate of camshaft rear end
• Chipping signal plate of camshaft rear end

OK or NG

OK

>> GO TO 6.

NG

>> Remove debris and clean the signal plate of camshaft

rear end or replace camshaft.

6.

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?

Yes or No

PBIA8559J

SEC905C

EC-152

< SERVICE INFORMATION >

[VQ35DE]

DTC P0011, P0021 IVT CONTROL

Yes

>> Check timing chain installation. Refer to 

EM-64

.

No

>> GO TO 7.

7.

CHECK LUBRICATION CIRCUIT

Refer to 

EM-65, "Removal and Installation"

.

OK or NG

OK

>> GO TO 8.

NG

>> Clean lubrication line.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

EC-139

.

For Wiring Diagram, refer to 

EC-320

 for CKP sensor (POS) and 

EC-325

 for CMP sensor (PHASE).

>> INSPECTION END

Component Inspection

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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 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 Installation

INFOID:0000000001325964

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to 

EM-64

.

Terminal

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