Infiniti I30 (A33). Manual - part 327

10

CHECK INTERMITTENT INCIDENT

Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.

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INSPECTION END

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IDX

FUEL PUMP

Diagnostic Procedure (Cont’d)

EC-623

System Description

NHEC0599

Sensor

Input Signal to ECM

ECM func-

tion

Actuator

Crankshaft position sensor (POS)

Engine speed (POS signal)

Engine
mount con-
trol

Electronic controlled engine
mount

Crankshaft position sensor (REF)

Engine speed (REF signal)

Vehicle speed sensor

Vehicle speed

The ECM controls the engine mount operation corresponding to
the engine speed and the vehicle speed. The control system has
2-step control [soft/hard].

Vehicle condition

Engine mount control

Idle (with vehicle stopped)

Soft

Driving

Hard

CONSULT-II Reference Value in Data Monitor
Mode

NHEC0600

Specification data are reference values.

MONITOR ITEM

CONDITION

SPECIFICATION

ENGINE MOUNT

I

Engine: Running

Idle

“IDLE”

2,000 rpm

“TRVL”

ELECTRONIC CONTROLLED ENGINE MOUNT

System Description

EC-624

Wiring Diagram

NHEC0602

MEC151D

SEF640XB

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SU

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BT

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SC

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IDX

ELECTRONIC CONTROLLED ENGINE MOUNT

Wiring Diagram

EC-625

Diagnostic Procedure

NHEC0603

1

CHECK THE OVERALL FUNCTION

With CONSULT-II

1. After warming up engine, run it at idle speed.
2. Shift selector lever to “D” range while depressing the brake pedal and pulling the parking brake control lever.
3. Perform “ENGINE MOUNTING” in “ACTIVE TEST” mode with CONSULT-II and check that the body vibration changes

according to switching the condition (With vehicle stopped).

SEF074Y

Without CONSULT-II

1. After warming up engine, run it at idle speed.
2. Shift selector lever to “D” range while depressing the brake pedal and pulling the parking brake control lever.
3. Disconnect front or rear electronic controlled engine mount harness connector when engine speed is more than 1,000

rpm.

Radiator cap

Front electronic controlled 
engine mount harness connector

Battery

Rear electronic controlled 
engine mount harness connector

View with intake air duct removed

SEF285XA

4. When returning engine speed to idle speed, check that the body vibration increases, compared with the condition of the

above step 2 (With vehicle stopped).

OK or NG

OK

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INSPECTION END

NG

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GO TO 2.

ELECTRONIC CONTROLLED ENGINE MOUNT

Diagnostic Procedure

EC-626