Nissan Murano Z51. Instruction — part 607
EC-436
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
ELECTRONIC CONTROLLED ENGINE MOUNT
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
EC-436, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace electronic controlled engine mount control solenoid valve.
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
GI-39, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace intake manifold collector.
NO
>> Repair or replace malfunctioning part.
Component Inspection
INFOID:0000000005536868
1.
CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE
With CONSULT-III
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.
ECM
Electronic controlled engine
mount control solenoid valve
Continuity
Connector
Terminal
Connector
Terminal
F7
28
F11
2
Existed
MBIB1237E
ELECTRONIC CONTROLLED ENGINE MOUNT
EC-437
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
5.
Select “ENGINE MOUNTING” in “ACTIVE TEST” mode with CONSULT-III.
6.
Check air passage continuity and operation delay time under the
following conditions.
Without CONSULT-III
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.
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
EC-438
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
FUEL INJECTOR
FUEL INJECTOR
Description
INFOID:0000000005536869
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Component Function Check
INFOID:0000000005536870
1.
INSPECTION START
Turn ignition switch to START.
Are any cylinders ignited?
YES
>> GO TO 2.
NO
>> Go to
2.
CHECK FUEL INJECTOR FUNCTION
With CONSULT-III
1.
Start engine.
2.
Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.
3.
Check that each circuit produces a momentary engine speed drop.
Without CONSULT-III
1.
Start engine.
2.
Listen to each fuel injector operating sound.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000005536871
1.
CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect fuel injector harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between fuel injector harness connector and ground.
PBIA9664J
Clicking sound should be heard.
PBIB3332E
FUEL INJECTOR
EC-439
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• 10 A fuse (No.44)
• IPDM E/R harness connector F12
• Harness for open or short between fuel injector and IPDM E/R
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between fuel injector harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK FUEL INJECTOR
EC-440, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace malfunctioning fuel injector.
5.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> INSPECTION END
Fuel injector
Ground
Voltage
Cylinder
Connector
Terminal
1
F37
1
Ground
Battery voltage
2
F38
1
3
F39
1
4
F40
1
5
F41
1
6
F42
1
Fuel injector
ECM
Continuity
Cylinder
Connector
Terminal
Connector
Terminal
1
F37
2
F7
32
Existed
2
F38
2
31
3
F39
2
30
4
F40
2
29
5
F41
2
3
6
F42
2
1
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