Diagnostic Procedure

Do you have CONSULT-II?

Yes or No 

Yes : GO TO 2.

No : GO TO  3.

With CONSULT-II 

1. Turn ignition switch ON.
2. Select "ENGINE MOUNTING" in "ACTIVE TEST" mode with CONSULT-II and touch "ON/OFF" on the CONSULT-II screen.
3. Check that the motor operating sound is heard from front electronic controlled engine mount and rear electronic controlled engine mount for about 0.5 seconds according to the switching condition of "ENGINE MOUNTING".

OK or NG 

OK : INSPECTION END 

NG : GO TO  4.

Fig 1: CONSULT-II Display - Active Test

Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II 

1. Make sure that gear position is P or N.
2. Start engine and let it idle.
3. Change the engine speed from idle to more than 1, 000 rpm and then return to idle (with vehicle stopped).
4. Check that the motor operating sound is heard from front electronic controlled engine mount and rear electronic controlled engine mount for about 0.5 seconds when changing engine speed.

   It is better to hear the operating sound around the left side front wheel house.

OK or NG 

OK : INSPECTION END 

NG : GO TO 4.

1. Turn ignition switch OFF.
2. Disconnect front and rear electronic controlled engine mount harness connector.
   Fig 2: Disconnecting Front And Rear Electronic Controlled Engine Mount Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between electronic controlled engine mount terminal 3 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

Fig 3: Checking Voltage Between Electronic Controlled Engine Mount Terminal 3 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK : GO TO  6.

NG : GO TO 5.

Check the following.

• Harness connectors E20, F32
• 10A fuse
• Harness for open and short between electronic controlled engine mount and battery

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

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals and electronic engine mount terminals as follows.

   Refer to WIRING DIAGRAM .

   CONTINUITY REFERENCE
   
   

   ECM terminal	Front electronic controlled engine mount terminal	Rear electronic controlled engine mount terminal
   8	1	1
   9	2	2

   Continuity should exist. 

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

OK or NG 

OK : GO TO 7.

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

Visually check front and rear electronic controlled engine mount.

OK or NG 

OK : GO TO 8.

NG : Replace front or rear electronic controlled engine mount.

Refer to , "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END