Nissan Murano. Manual - part 583

EC-442

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[VQ35DE]

ELECTRICAL LOAD SIGNAL

>> INSPECTION END

3.

CHECK HEADLAMP SYSTEM

Refer to 

EXL-6, "Work Flow"

 (XENON TYPE) or 

EXL-194, "Work Flow"

 (HALOGEN TYPE).

>> INSPECTION END

4.

CHECK HEATER FAN CONTROL SYSTEM

Refer to 

VTL-71, "System Description"

.

>> INSPECTION END

ELECTRONIC CONTROLLED ENGINE MOUNT

EC-443

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ELECTRONIC CONTROLLED ENGINE MOUNT

Description

INFOID:0000000009720207

In the idle range, ECM turns OFF the electronically-controlled engine mount control solenoid valve and applies
manifold pressure to the electronically-controlled engine mount. This decreases damping force of the electron-
ically-controlled engine mount and absorbs vibrations traveling from the engine to the body for improving the
quietness. 
In the driving range, ECM turns ON the electronically-controlled engine mount control solenoid valve and cuts
manifold pressure applied on the electronically-controlled engine mount. This increases damping force of the
electronically-controlled engine mount and reduces vibrations generated during driving.

Component Function Check

INFOID:0000000009720208

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-443, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009720209

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-82,

"System Diagram"

.

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

CIRCUIT

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?

Vacuum should exist.

Electronic controlled engine mount 

control solenoid valve

Ground

Voltage

Connector

Terminal

F11

1

Ground

Battery voltage

EC-444

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

ELECTRONIC CONTROLLED ENGINE MOUNT

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E6, F123
• 10 A fuse (No. 3)
• Fuse block (J/B) connector E103
• Harness for open or short between electronic controlled engine mount control solenoid valve and fuse

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

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

Refer to 

EC-444, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

EM-33, "Exploded

View"

.

7.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT

1.

Turn ignition switch OFF.

2.

Install vacuum pump (A) to electronic controlled engine mount
(1).

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

Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace intake manifold collector. Refer to 

EM-33, "Exploded View"

.

NO

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000009720210

1.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE

ECM

Electronic controlled engine 

mount control solenoid valve

Continuity

Connector

Terminal

Connector

Terminal

F7

28

F11

2

Existed

MBIB1237E

ELECTRONIC CONTROLLED ENGINE MOUNT

EC-445

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 With CONSULT

1.

Turn ignition switch OFF.

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 sole-

noid valve. Refer to 

EM-33, "Exploded View"

.

Condition

(ENGINE MOUNTING)

Air passage continuity 

between (A) and (B)

Air passage continuity 

between (A) and (C)

TRVL

Existed

Not existed

IDLE

Not existed

Existed

Condition

Air passage continuity 

between (A) and (B)

Air passage continuity 

between (A) and (C)

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

Existed

Not existed

No supply

Not existed

Existed

JMBIA0180ZZ

PBIB2532E