Nissan Titan. Manual - part 217

P0075, P0081 IVT CONTROL SOLENOID VALVE

EC-169

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

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P0075, P0081 IVT CONTROL SOLENOID VALVE

Component Description

INFOID:0000000009886562

Intake valve timing control solenoid valve is activated by ON/OFF

pulse duty (ratio) signals from the ECM.

The intake valve timing 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.

On Board Diagnosis Logic

INFOID:0000000009886563

DTC Confirmation Procedure

INFOID:0000000009886564

1. If DTC Confirmation Procedure has been previously conducted, always perform the following before con-

ducting the next step.

a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c. Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to 

EC-169, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009886565

1.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect intake valve timing control solenoid valve harness connector.

PBIB1842E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0075
0075
(Bank 1)

Intake valve timing control 
solenoid valve circuit

An improper voltage is sent to the ECM 
through intake valve timing control solenoid 
valve.

• Harness or connectors

(Intake valve timing control solenoid valve 
circuit is open or shorted.)

• Intake valve timing control solenoid valve

P0081
0081
(Bank 2)

BBIA0771E

EC-170

< DTC/CIRCUIT DIAGNOSIS >

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P0075, P0081 IVT CONTROL SOLENOID VALVE

3. Turn ignition switch ON.

4. Check voltage between intake valve timing control solenoid

valve terminal 2 and ground with CONSULT or tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E2, F32

• IPDM E/R harness connector E119

• 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.

3.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN

AND SHORT
1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. 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.

4. Also check harness for short to ground and short to power. 
OK or NG

OK

>> GO TO 4.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to 

EC-170, "Component Inspection"

.

OK or NG

OK

>> GO TO 5.

NG

>> Replace malfunctioning intake valve timing control solenoid valve. Refer to 

EC-493

.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "How to Check Terminal"

 and 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009886566

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

1. Disconnect intake valve timing control solenoid valve harness connector.

1.

Intake valve timing control position 
sensor (bank 2)

2.

Intake valve timing control solenoid 
valve (bank 2)

3.

Drive belt

4.

Radiator hose

5.

Intake valve timing control solenoid 
valve (bank 1)

6.

Intake valve timing control position 
sensor (bank 1)

Voltage: Battery voltage

PBIB0351E

Continuity should exist.

P0075, P0081 IVT CONTROL SOLENOID VALVE

EC-171

< DTC/CIRCUIT DIAGNOSIS >

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2. Check resistance between intake valve timing control solenoid

valve terminals as follows.

If NG, replace intake valve timing control solenoid valve. Refer to

EC-493

.

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.

Terminals

Resistance

1 and 2

7.1 - 7.7

Ω [at 20°C (68°F)]

1 or 2 and ground

∞Ω

(Continuity should not exist)

MBIB0027E

PBIB2388E

EC-172

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P0101 MAF SENSOR

P0101 MAF SENSOR

Component Description

INFOID:0000000009886567

The mass air flow sensor is placed in the stream of intake air. It mea-

sures the intake flow rate by measuring a part of the entire intake

flow. The mass air flow sensor controls the temperature of the hot

wire to a certain amount. The heat generated by the hot wire is

reduced as the intake air flows around it. The more air, the greater

the heat loss.

Therefore, the electric current supplied to the hot wire is changed to

maintain the temperature of the hot wire as air flow increases. The

ECM detects the air flow by means of this current change.

DTC Logic

INFOID:0000000009886568

DTC DETECTION LOGIC

NOTE:

If DTC P0101 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-

dure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

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

2. Drive the vehicle for at least 5 seconds under the following conditions:

CAUTION:

Always drive vehicle at safe speed.

NOTE:

• The gear must be fixed while driving the vehicle.

• Keep the accelerator pedal as steady as possible during cruising.

3. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-173, "Diagnosis Procedure"

.

NO

>> INSPECTION END

BBIA0355E

DTC No.

Trouble diagnosis

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0101

MAF SEN/CIRCUIT-B1
[Mass air flow (MAF) sensor cir-
cuit range/performance]

• A high voltage from the sensor is sent to 

ECM under light load driving condition.

• A low voltage from the sensor is sent to 

ECM under heavy load driving condition.

• Harness or connectors

(The sensor circuit is open or short-
ed.)

• Intake air leaks
• MAF sensor
• EVAP control system pressure sensor
• Intake air temperature sensor

Selector lever

Suitable position

Vehicle speed

40 km/h (25 MPH) or more