Nissan Murano Z50 (2006 year). Manual — part 117
IGNITION SIGNAL
EC-651
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
Component Inspection
NBS003DJ
IGNITION COIL WITH POWER TRANSISTOR
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1.
Turn ignition switch OFF.
2.
Disconnect ignition coil harness connector.
3.
Check resistance between ignition coil terminals as follows.
4.
If NG, Replace ignition coil with power transistor.
If OK, go to next step.
5.
Turn ignition switch OFF.
6.
Reconnect all harness connectors disconnected.
7.
Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
8.
Start engine.
9.
After engine stalls, crank it two or three times to release all fuel
pressure.
10. Turn ignition switch OFF.
11. Remove ignition coil harness connectors to avoid the electrical
discharge from the ignition coils.
12. Remove ignition coil and spark plug of the cylinder to be
checked.
13. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
14. Connect spark plug and harness connector to ignition coil.
15. Fix ignition coil using a rope etc. with gap of 13 - 17 mm
between the edge of the spark plug and grounded metal portion
as shown in the figure.
16. Crank engine for about 3 seconds, and check whether spark is
generated between the spark plug and the grounded part.
CAUTION:
●
Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.
●
It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
17. If NG, Replace ignition coil with power transistor.
CONDENSER
1.
Turn ignition switch OFF.
2.
Disconnect condenser harness connector.
Terminal No. (Polarity)
Resistance
Ω
[at 25
°
C (77
°
F)]
1 and 2
Except 0 or
∞
1 and 3
Except 0
2 and 3
Spark should be generated.
PBIB0847E
PBIB2087E
PBIB2325E
EC-652
IGNITION SIGNAL
Revision: 2006 August
2006 Murano
3.
Check resistance between condenser terminals 1 and 2.
Removal and Installation
NBS003DK
IGNITION COIL WITH POWER TRANSISTOR
Refer to
Resistance
Above 1 M
Ω
at 25
°
C (77
°
F)
PBIB0794E
REFRIGERANT PRESSURE SENSOR
EC-653
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
REFRIGERANT PRESSURE SENSOR
PFP:92136
Component Description
NBS003E7
The refrigerant pressure sensor is installed at the condenser of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
PBIB1372E
PBIB2657E
EC-654
REFRIGERANT PRESSURE SENSOR
Revision: 2006 August
2006 Murano
Wiring Diagram
NBS003E8
TBWA0722E
REFRIGERANT PRESSURE SENSOR
EC-655
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
NBS003E9
1.
CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1.
Start engine and warm it up to normal operating temperature.
2.
Turn A/C switch and blower fan switch ON.
3.
Check voltage between ECM terminal 70 and ground with CON-
SULT-II or tester.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
2.
CHECK GROUND CONNECTIONS
1.
Turn A/C switch and blower fan switch OFF.
2.
Turn ignition switch OFF.
3.
Loosen and retighten two ground screws on the body.
Refer to
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace ground connections.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
49
R/W
Sensor power supply
(Refrigerant pressure sen-
sor)
[Ignition switch: ON]
Approximately 5V
67
B
Sensor ground
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
70
W
Refrigerant pressure sensor
[Engine is running]
●
Warm-up condition
●
Both A/C switch and blower fan switch are
ON. (Compressor operates.)
1.0 - 4.0V
Voltage: 1.0 - 4.0V
PBIB1188E
PBIB1835E
EC-656
REFRIGERANT PRESSURE SENSOR
Revision: 2006 August
2006 Murano
3.
CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect refrigerant pressure sensor harness connector.
2.
Turn ignition switch ON.
3.
Check voltage between refrigerant pressure sensor terminal 1
and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E19, F3
●
Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E19, F3
●
Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1372E
Voltage: Approximately 5V
PBIB0188E
Continuity should exist.
REFRIGERANT PRESSURE SENSOR
EC-657
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
7.
CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between ECM terminal 70 and refrigerant pressure sensor terminal 2.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E19, F3
●
Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK INTERMITTENT INCIDENT
Refer to
EC-142, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
OK or NG
OK
>> Replace refrigerant pressure sensor.
NG
>> Repair or replace.
Removal and Installation
NBS003EA
REFRIGERANT PRESSURE SENSOR
Refer to
ATC-142, "Removal and Installation of Refrigerant Pressure Sensor"
Continuity should exist.
EC-658
VIAS
Revision: 2006 August
2006 Murano
VIAS
PFP:14956
Description
NBS003DL
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
When the engine is running at medium speed, the ECM sends the ON signal to the VIAS control solenoid
valve. This signal introduces the intake manifold vacuum into the power valve actuator and therefore closes
the power valve.
Under this condition, the effective intake manifold length is equivalent to the total length of passage A and pas-
sage B. This long intake manifold provides increased amount of intake air, which results in improved suction
efficiency and higher torque.
When engine is running at low or high speed, the ECM sends the OFF signal to the VIAS control solenoid
valve and the power valve is opened.
Under this condition, the effective intake manifold length is equivalent to the length of passage B. This short-
ened intake manifold length results in enhanced engine output due to reduced suction resistance under high
speeds.
COMPONENT DESCRIPTION
Power Valve
The power valve is installed in intake manifold collector and used to
control the suction passage of the variable induction air control sys-
tem. It is set in the fully closed or fully opened position by the power
valve actuator operated by the vacuum stored in the surge tank. The
vacuum in the surge tank is controlled by the VIAS control solenoid
valve.
Sensor
Input Signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
VIAS control
VIAS control solenoid valve
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Throttle position sensor
Throttle position
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage*
PBIB1822E
PBIB1369E
VIAS
EC-659
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
VIAS Control Solenoid Valve
The VIAS control solenoid valve cuts the intake manifold vacuum
signal for power valve control. It responds to ON/OFF signals from
the ECM. When the solenoid is off, the vacuum signal from the
intake manifold is cut. When the ECM sends an ON signal the coil
pulls the plunger downward and feeds the vacuum signal to the
power valve actuator.
CONSULT-II Reference Value in Data Monitor Mode
NBS003DM
Specification data are reference values.
PBIB1369E
MONITOR ITEM
CONDITION
SPECIFICATION
VIAS S/V
●
Engine: After warming up
1,800 - 3,600 rpm
ON
Except above conditions
OFF
EC-660
VIAS
Revision: 2006 August
2006 Murano
Wiring Diagram
NBS003DN
TBWB0820E
VIAS
EC-661
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
29
G/Y
VIAS control solenoid valve
[Engine is running]
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Engine speed: Between 1,800 and 3,600
rpm.
0 - 1.0V
111
W/B
ECM relay
(Self shut-off)
[Engine is running]
[Ignition switch: OFF]
●
For a few seconds after turning ignition
switch OFF
0 - 1.5V
[Ignition switch: OFF]
●
More than a few seconds after turning igni-
tion switch OFF
BATTERY VOLTAGE
(11 - 14V)
119
120
R/B
R/B
Power supply for ECM
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
EC-662
VIAS
Revision: 2006 August
2006 Murano
Diagnostic Procedure
NBS003DO
1.
CHECK OVERALL FUNCTION
With CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode with CON-
SULT-II.
3.
Turn VIAS control solenoid valve “ON” and “OFF”, and make
sure that power valve actuator rod moves.
Without CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Rev engine quickly up to above 3,600 rpm and make sure that
power valve actuator rod moves.
OK or NG
OK
>> INSPECTION END
NG (With CONSULT-II) >>GO TO 2.
NG (Without CONSULT-II) >>GO TO 3.
PBIB0844E
PBIB1380E
PBIB1380E
VIAS
EC-663
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
2.
CHECK VACUUM EXISTENCE
With CONSULT-II
1.
Stop engine and disconnect vacuum hose connected to power valve actuator.
2.
Start engine and let it idle.
3.
Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode with CONSULT-II.
4.
Turn VIAS control solenoid valve “ON” and “OFF”, and check
vacuum existence under the following conditions.
OK or NG
OK
>> Repair or replace power valve actuator.
NG >> GO
TO
4.
3.
CHECK VACUUM EXISTENCE
Without CONSULT-II
1.
Stop engine and disconnect vacuum hose connected to power valve actuator.
2.
Disconnect VIAS control solenoid valve harness connector.
3.
Start engine and let it idle.
4.
Apply 12V of direct current between VIAS control solenoid valve
terminals 1 and 2.
5.
Check vacuum existence under the following conditions.
OK or NG
OK
>> Repair or replace power valve actuator.
NG
>> GO TO 4.
4.
CHECK VACUUM HOSE
1.
Stop engine.
2.
Check hoses and tubes between intake manifold and power
valve actuator for crack, clogging, improper connection or dis-
connection. Refer to
OK or NG
OK
>> GO TO 5.
NG
>> Repair hoses or tubes.
VIAS SOL VALVE
Vacuum
ON
Should exist
OFF
Should not exist
PBIB0844E
Condition
Vacuum
12V direct current supply
Should exist.
No supply
Should not exist.
PBIB0845E
SEF109L
EC-664
VIAS
Revision: 2006 August
2006 Murano
5.
CHECK VACUUM TANK
Refer to
EC-665, "Component Inspection"
OK or NG
OK
>> GO TO 6.
NG
>> Replace vacuum tank.
6.
CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect VIAS control solenoid valve harness connector.
3.
Turn ignition switch ON.
4.
Check voltage between VIAS control solenoid valve terminal 1
and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E110, M7
●
Harness connectors M82, F102
●
IPDM E/R connector E7
●
Harness for open or short between VIAS control solenoid valve and IPDM E/R
●
Harness for open or short between VIAS control solenoid valve and ECM
>> Repair harness or connectors.
8.
CHECK VIAS CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 29 and VIAS control solenoid valve terminal 2.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 9.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1369E
Voltage: Battery voltage
PBIB0173E
Continuity should exist.
VIAS
EC-665
C
D
E
F
G
H
I
J
K
L
M
A
EC
Revision: 2006 August
2006 Murano
9.
CHECK VIAS CONTROL SOLENOID VALVE
Refer to
EC-665, "Component Inspection"
OK or NG
OK
>> GO TO 10.
NG
>> Replace VIAS control solenoid valve.
10.
CHECK INTERMITTENT INCIDENT
Refer to
EC-142, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Component Inspection
NBS003DP
VIAS CONTROL SOLENOID VALVE
With CONSULT-II
1.
Reconnect harness connectors disconnected.
2.
Turn ignition switch ON.
3.
Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode.
4.
Check air passage continuity and operation delay time under the
following conditions.
Operation takes less than 1 second.
Without CONSULT-II
Check air passage continuity and operation delay time under the fol-
lowing conditions.
Operation takes less than 1 second.
VACUUM TANK
1.
Disconnect vacuum hose connected to vacuum tank.
2.
Connect a vacuum pump to the port A of vacuum tank.
3.
Apply vacuum and make sure that vacuum exists at the port B.
Condition
VIAS SOL VALVE
Air passage continuity
between A and B
Air passage continuity
between A and C
ON
Yes
No
OFF
No
Yes
PBIB2505E
Condition
Air passage continuity
between A and B
Air passage continuity
between A and C
12V direct current supply
between terminals 1 and 2
Yes
No
No supply
No
Yes
PBIB2532E
PBIB0846E
EC-666
VIAS
Revision: 2006 August
2006 Murano
Removal and Installation
NBS003DQ
VIAS CONTROL SOLENOID VALVE
Refer to
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст