Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

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.
  
  Vacuum should exist.
Is the inspection result normal?

YES

GO TO 7.

NO

GO TO 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 System Description .
Is the inspection result normal?

YES

GO TO 3.

NO

Repair or replace vacuum hoses and vacuum gallery.

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE POWER SUPPLY

Disconnect electronic controlled engine mount control solenoid valve harness connector.
Turn ignition switch ON.

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

+		-	Voltage
Electronic controlled engine mount control solenoid valve
Connector	Terminal
F64	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 4.

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

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

Disconnect ECM harness connector.

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

ECM		Electronic controlled engine mount control solenoid valve		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F13	49	F64	2	Existed

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 5.

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

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE
Check electronic controlled engine mount control solenoid valve. Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 6.

NO

Replace electronic controlled engine mount control solenoid valve. Refer to Component Parts Location .

CHECK ELECTRONIC CONTROLLED ENGINE MOUNT

Turn ignition switch OFF.

Install vacuum pump (A) to electronic controlled engine mount

Courtesy of NISSAN NORTH AMERICA, INC.

Check that a vacuum is maintained when applying the vacuum of -40 kPa (-0.4 bar, -0.41 kg/cm ² , -5.8 psi) to electronic controlled engine mount.
Also visually check electronic controlled engine mount.

Is the inspection result normal?

YES

GO TO 7.

Replace electronic controlled engine mount.

CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to Intermittent Incident .

Is the inspection result normal?

YES

Replace intake manifold collector. Refer to Removal and Installation .

NO

Repair or replace error-detected parts.