Nissan X-Trail 32. Manual - part 868

P0075 INTAKE VALVE TIMING CONTROL

EC-601

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

2.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II

1.

Remove intake valve timing control solenoid valve. Refer to 

EM-210, "Exploded View"

.

2.

Provide 12 V DC between intake valve timing control solenoid
valve terminals 1 and 2, and then interrupt it. Make sure that the
plunger moves as shown in the figure.

CAUTION:

Do not apply 12 V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

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

EM-210, "Exploded View"

.

Component Inspection (IVT Intermediate Lock Control Solenoid Valve)

INFOID:0000000010986318

1.

CHECK INTAKE VALVE TIMING INTERMEDIATE LOCK CONTROL SOLENOID VALVE-I

1.

Turn ignition switch OFF.

2.

Disconnect intake valve timing intermediate lock control solenoid valve harness connector.

3.

Check resistance between intake valve timing intermediate lock control solenoid valve terminals as fol-
lows.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace intake valve timing intermediate lock control solenoid valve. Refer to 

EM-210, "Exploded

View"

.

2.

CHECK INTAKE VALVE TIMING INTERMEDIATE LOCK CONTROL SOLENOID VALVE-II

1.

Remove intake valve timing intermediate lock control solenoid valve. Refer to 

EM-210, "Exploded View"

.

2.

Provide 12 V DC between intake valve timing intermediate lock
control solenoid valve terminals 1 and 2, and then interrupt it.
Make sure that the plunger moves as shown in the figure.

CAUTION:

Do not apply 12 V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing intermediate lock control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing intermedi-
ate lock control solenoid valve is removed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace intake valve timing intermediate lock control solenoid valve. Refer to 

EM-210, "Exploded

View"

.

JMBIA2107ZZ

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)

JMBIA2107ZZ

EC-602

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0078 EVT CONTROL SOLENOID VALVE

P0078 EVT CONTROL SOLENOID VALVE

DTC Description

INFOID:0000000010986319

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (Exhaust valve timing control solenoid valve circuit is open or shorted.)
• Exhaust valve timing control solenoid valve

FAIL-SAFE

Device fix mode

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
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 TO2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for 5 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-602, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010986320

1.

CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect exhaust valve timing (EVT) control solenoid valve harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between exhaust valve timing control solenoid valve harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0078

EX V/T ACT/CIRC-B1
(Exhaust valve control solenoid circuit bank 
1)

An improper voltage is sent to the ECM through exhaust valve timing con-
trol solenoid valve.

+

−

Voltage

EVT control solenoid valve

Connector

Terminal

F107

1

Ground

Battery voltage

P0078 EVT CONTROL SOLENOID VALVE

EC-603

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

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3.

Check the continuity between EVT control solenoid valve harness connector and IPDM E/R harness con-
nector.

4.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

3.

CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between EVT control solenoid valve harness connector and ECM harness connec-
tor.

4.

Also check harness for short to ground and to power. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE

Check the exhaust valve timing control solenoid valve. Refer to 

EC-590, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace exhaust valve timing control solenoid valve.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000010986321

1.

CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE-1

1.

Turn ignition switch OFF.

2.

Disconnect exhaust valve timing control solenoid valve harness connector.

3.

Check resistance between exhaust valve timing control solenoid valve terminals as per the following.

Is the inspection result normal?

+

+

Continuity

EVT control solenoid valve

IPDM E/R

Connector

Terminal

Connector

Terminal

F107

1

F72

78

Existed

+

+

Continuity

EVT control solenoid valve

ECM

Connector

Terminal

Connector

Terminal

F107

2

F68

94

Existed

Exhaust valve timing control solenoid valve

Resistance

+

−

Terminal

1

 2

7.0 - 7.7 

Ω

 [at 20

°

C (68

°

F)]

1

Ground

∞

 

Ω

(Continuity should not exist)

2

EC-604

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0078 EVT CONTROL SOLENOID VALVE

YES

>> GO TO 2.

NO

>> Replace exhaust valve timing control solenoid valve. Refer to 

EM-210, "Exploded View"

.

2.

CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE-2

1.

Remove exhaust valve timing control solenoid valve. Refer to 

EM-210, "Exploded View"

.

2.

Provide 12 V DC between exhaust valve timing control solenoid
valve terminals 1 and 2, and then interrupt it. Check that the
plunger moves as shown in the figure.

CAUTION:

Do not apply 12 V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in exhaust valve
timing control solenoid valve.
NOTE:
Always replace O-ring when exhaust valve timing control
solenoid valve is removed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace exhaust valve timing control solenoid valve. Refer to 

EM-210, "Exploded View"

.

JMBIA0079ZZ