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
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
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
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
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
©
GO TO 2.
ELECTRONIC CONTROLLED ENGINE MOUNT
Diagnostic Procedure
EC-626
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