Nissan Pathfinder. Manual - part 530

 

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Nissan Pathfinder. Manual - part 530

 

 

EC-426

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

ELECTRONIC CONTROLLED ENGINE MOUNT

ELECTRONIC CONTROLLED ENGINE MOUNT

Component Function Check

INFOID:0000000009178357

1.

CHECK OVERALL FUNCTION

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

2. Shift selector position is D while depressing the brake pedal and parking brake pedal.

3. Disconnect electronic controlled engine mount control solenoid valve harness connector.

4. Check that body vibration increases compared to the condition of step 2 above (with vehicle stopped).
Is the inspection result normal?

YES

>> INSPECTION END

NO

>>

EC-427, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009178358

1.

CHECK VACUUM SOURCE

1. Turn ignition switch OFF.

2. Reconnect electronic controlled engine mount control solenoid valve harness connector.

3. Disconnect vacuum hose connected to electronic controlled engine mount.

4. Start engine and let it idle.

5. Check vacuum hose for vacuum existence.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK VACUUM HOSES AND VACUUM GALLERY

1. Turn ignition switch OFF.

2. Check vacuum hoses and vacuum gallery for clogging, cracks or improper connection. Refer to 

EC-38,

"ELECTRONIC CONTROLLED ENGINE MOUNT : System Description"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace vacuum hoses and vacuum gallery.

3.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE POWER SUPPLY

1. Disconnect electronic controlled engine mount control solenoid valve harness connector.

2. Turn ignition switch ON.

3. Check the voltage between front electronic controlled engine mount harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE POWER SUPPLY

CIRCUIT
1. Turn ignition switch OFF.

2. Disconnect fuse block (J/B) harness connector.

3. Check the continuity between electronic controlled engine mount harness connector and fuse block (J/B)

harness connector.

Vacuum should exist.

Electronic controlled engine mount 

control solenoid valve

Ground

Voltage

Connector

Terminal

F64

1

Ground

Battery voltage

ELECTRONIC CONTROLLED ENGINE MOUNT

EC-427

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

5.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE OUTPUT SIG-

NAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.

2. Check the continuity between ECM harness connector and electronic controlled engine mount control

solenoid valve harness connector.

3. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 6.

NO

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

6.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE

Check electronic controlled engine mount control solenoid valve. Refer to 

EC-428, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace electronic controlled engine mount control solenoid valve. Refer to 

EC-14, "ENGINE

CONTROL SYSTEM : Component Parts Location"

.

7.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT

1. Turn ignition switch OFF.

2. Install vacuum pump (A) to electronic controlled engine mount

.

3. Check that a vacuum is maintained when applying the vacuum

of -40 kPa (-0.41 kg/cm

2

, -5.8 psi) to electronic controlled engine

mount.

4. Also visually check electronic controlled engine mount.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace electronic controlled engine mount.

8.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace intake manifold collector. Refer to 

EM-26, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

Component Inspection

INFOID:0000000009178359

1.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE

 With CONSULT

1. Turn ignition switch OFF.

Electronic controlled engine 

mount control solenoid valve

Fuse block (J/B)

Continuity

Connector

Terminal

Connector

Terminal

F64

1

E28

1M

Existed

ECM

Electronic controlled engine 

mount control solenoid valve

Continuity

Connector

Terminal

Connector

Terminal

F51

38

F64

2

Existed

MBIB1237E

EC-428

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

ELECTRONIC CONTROLLED ENGINE MOUNT

2. Reconnect electronic controlled engine mount control solenoid valve harness connector.

3. Disconnect vacuum hoses connected to electronic controlled engine mount control solenoid valve.

4. Turn ignition switch ON.

5. Select “ENGINE MOUNTING” in “ACTIVE TEST” mode with CONSULT.

6. Check air passage continuity and operation delay time under the

following conditions.

 Without CONSULT

1. Turn ignition switch OFF.

2. Disconnect electronic controlled engine mount control solenoid

valve harness connector.

3. Disconnect vacuum hoses connected to electronic controlled engine mount control solenoid valve.

4. Check air passage continuity and operation delay time under the

following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace electronic controlled engine mount control solenoid valve. Refer to 

EC-14, "ENGINE

CONTROL SYSTEM : Component Parts Location"

.

Condition

(ENGINE MOUNTING)

Air passage continuity 

between  

and 

Air passage continuity 

between  

and 

TRVL

Existed

Not existed

IDLE

Not existed

Existed

Condition

Air passage continuity 

between  

and 

Air passage continuity 

between  

and 

12 V direct current supply be-
tween terminals 1 and 2

Existed

Not existed

No supply

Not existed

Existed

JMBIA0180ZZ

PBIB2532E

FUEL INJECTOR

EC-429

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

FUEL INJECTOR

Component Function Check

INFOID:0000000009178360

1.

INSPECTION START

Turn ignition switch to START.
Are any cylinders ignited?

YES

>> GO TO 2.

NO

>> Proceed to 

EC-430, "Diagnosis Procedure"

.

2.

CHECK FUEL INJECTOR FUNCTION

With CONSULT

1. Start engine.

2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT.

3. Check that each circuit produces a momentary engine speed drop.

Without CONSULT

1. Start engine.

2. Listen to each fuel injector operating sound.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-430, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009178361

1.

CHECK FUEL INJECTOR POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect fuel injector harness connector.

3. Turn ignition switch ON.

4. Check the voltage between fuel injector harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector.

3. Check the continuity between fuel injector harness connector and IPDM E/R harness connector.

Clicking sound should be heard.

PBIB3332E

Fuel injector

Ground

Voltage

Cylinder

Connector

Terminal

1

F30

1

Ground

Battery voltage

2

F18

1

3

F41

1

4

F20

1

5

F42

1

6

F22

1

 

 

 

 

 

 

 

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