Infiniti M35/M45 Y50. Manual - part 601

DTC P0011, P0021 IVT CONTROL

EC-877

[VK45DE]

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Diagnostic Procedure

NBS005BE

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-27, "OIL PRESSURE CHECK"

 .

2. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten ground screws on the body. 
Refer to 

EC-864, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace ground connections.

PBIA8559J

1.

Body ground M70

2.

Body ground M16

PBIB2782E

EC-878

[VK45DE]

DTC P0011, P0021 IVT CONTROL

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 E108, M15

●

Harness connectors F102, M72

●

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.

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.

1.

Intake valve timing control position 
sensor (bank 2)

2.

Intake valve timing control position 
sensor (bank 1)

Voltage: Battery voltage

PBIB2686E

SEF509Y

Continuity should exist.

DTC P0011, P0021 IVT CONTROL

EC-879

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EC

6. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F102, M72

●

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-881, "Component Inspection"

 .

OK or NG

OK

>> GO TO 9.

NG

>> Replace intake valve timing control position sensor.

Continuity should exist.

EC-880

[VK45DE]

DTC P0011, P0021 IVT CONTROL

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 E12, F3

●

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.

1.

Intake valve timing control solenoid 
valve (bank 2)

2.

Intake valve timing control solenoid 
valve (bank 1)

Voltage: Battery voltage

PBIB2687E

PBIB0192E

Continuity should exist.