Nissan Murano Z50 (2006 year). Manual — part 115
ASCD INDICATOR
EC-619
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Revision: 2006 August
2006 Murano
Diagnostic Procedure
NBS003EM
1.
CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
2.
CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
OK or NG
OK
>> GO TO 3.
NG
>> Perform trouble diagnoses for DTC U1000, U1001. Refer to
.
3.
CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to
OK or NG
OK
>> GO TO 4.
NG
DI-34, "DTC [B2202] Meter Communication Circuit"
4.
CHECK INTERMITTENT INCIDENT
Refer to
EC-142, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
MONITOR ITEM
CONDITION
SPECIFICATION
CRUISE LAMP
●
Ignition switch: ON
MAIN switch: Pressed at the 1st time
→
at the 2nd time
ON
→
OFF
SET LAMP
●
MAIN switch: ON
●
When vehicle speed is between
40 km/h (25 MPH) and 144 km/h
(89 MPH)
ASCD: Operating
ON
ASCD: Not operating
OFF
EC-620
ELECTRICAL LOAD SIGNAL
Revision: 2006 August
2006 Murano
ELECTRICAL LOAD SIGNAL
PFP:25350
Description
NBS003EB
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor Mode
NBS003EC
Specification data are reference values.
Diagnostic Procedure
NBS003ED
1.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1.
Turn ignition switch ON.
2.
Connect CONSULT-II and select “DATA MONITOR” mode.
3.
Select “LOAD SIGNAL” and check indication under the following
conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 4.
2.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 5.
MONITOR ITEM
CONDITION
SPECIFICATION
LOAD SIGNAL
●
Ignition switch: ON
Rear window defogger switch is ON
and/or lighting switch is in 2nd.
ON
Rear window defogger switch is OFF
and lighting switch is OFF.
OFF
HEATER FAN SW
●
Engine: After warming up, idle
the engine
Heater fan: Operating
ON
Heater fan: Not operating
OFF
Condition
Indication
Rear window defogger switch: ON
ON
Rear window defogger switch: OFF
OFF
PBIB0103E
Condition
Indication
Lighting switch: ON at 2nd position
ON
Lighting switch: OFF
OFF
PBIB0103E
ELECTRICAL LOAD SIGNAL
EC-621
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3.
CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
Check “HEATER FAN SW” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK
>> INSPECTION END.
NG
>> GO TO 6.
4.
CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to
.
>> INSPECTION END
5.
CHECK HEADLAMP SYSTEM
Refer to
LT-6, "HEADLAMP - XENON TYPE -"
LT-36, "HEADLAMP -CONVENTIONAL TYPE-"
>> INSPECTION END
6.
CHECK HEATER FAN CONTROL SYSTEM
Refer to
.
>> INSPECTION END
Condition
LOAD SIGNAL
Heater fan control switch: ON
ON
Heater fan control switch: OFF
OFF
PBIB1995E
EC-622
ELECTRONIC CONTROLLED ENGINE MOUNT
Revision: 2006 August
2006 Murano
ELECTRONIC CONTROLLED ENGINE MOUNT
PFP:11270
System Description
NBS003E3
*: This signal is sent to the ECM through CAN communication line.
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]
CONSULT-II Reference Value in Data Monitor Mode
NBS003E4
Specification data are reference values.
Sensor
Input Signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed
Engine mount
control
Electronic controlled engine
mount
Wheel sensor
Vehicle speed*
Vehicle condition
Engine mount control
Engine speed: Below 950 rpm
Soft
Engine speed: Above 950 rpm
Hard
MONITOR ITEM
CONDITION
SPECIFICATION
ENGINE MOUNT
●
Engine: After warming up
Engine speed: Below 950 rpm
IDLE
Engine speed: Above 950 rpm
TRVL
ELECTRONIC CONTROLLED ENGINE MOUNT
EC-623
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Wiring Diagram
NBS003E5
TBWB0822E
EC-624
ELECTRONIC CONTROLLED ENGINE MOUNT
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
NBS003E6
1.
INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes
>> GO TO 2.
No
>> GO TO 3.
2.
CHECK OVERALL FUNCTION
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 elec-
tronic 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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
8
BR/W
Electronic controlled engine
mount-1
[Engine is running]
●
Engine speed: Above 950 rpm.
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
For 2 seconds after engine speed is 950
rpm or less.
0 - 1.0V
[Engine is running]
●
2 seconds after engine speed is 950 rpm or
less.
2.0 - 3.0V
9
W/R
Electronic controlled engine
mount-2
[Engine is running]
●
Engine speed: Below 950 rpm.
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
For 2 seconds after engine speed is 950
rpm or more.
0 - 1.0V
[Engine is running]
●
2 seconds after engine speed is 950 rpm or
more.
2.0 - 3.0V
SEC237C
ELECTRONIC CONTROLLED ENGINE MOUNT
EC-625
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3.
CHECK OVERALL FUNCTION
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 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.
4.
CHECK ELECTRONIC CONTROLLED ENGINE MOUNT POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front or rear electronic controlled engine mount harness connector.
3.
Check voltage between electronic controlled engine mount ter-
minal 3 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M82, F102
●
10A fuse
●
Harness for open and short between electronic controlled engine mount and battery
>> Repair harness or connectors.
PBIB1373E
Voltage: Battery voltage
SEC920C
EC-626
ELECTRONIC CONTROLLED ENGINE MOUNT
Revision: 2006 August
2006 Murano
6.
CHECK ELECTRONIC CONTROLLED ENGINE MOUNT OUTPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminals and electronic engine mount terminals as follows.
Refer to Wiring Diagram.
3.
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.
7.
CHECK ELECTRONIC CONTROLLED ENGINE MOUNT
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.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-142, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
ECM terminal
Front electronic controlled engine mount
terminal
Rear electronic controlled engine mount
terminal (AWD models)
8
1
1
9
2
2
Continuity should exist.
FUEL INJECTOR
EC-627
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Revision: 2006 August
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FUEL INJECTOR
PFP:16600
Component Description
NBS003DR
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.
CONSULT-II Reference Value in Data Monitor Mode
NBS003DS
Specification data are reference values.
SEF375Z
MONITOR ITEM
CONDITION
SPECIFICATION
B/FUEL SCHDL
●
See
EC-132, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"
.
INJ PULSE-B1
INJ PULSE-B2
●
Engine: After warming up
●
Shift lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
EC-628
FUEL INJECTOR
Revision: 2006 August
2006 Murano
Wiring Diagram
NBS003DT
TBWB0873E
FUEL INJECTOR
EC-629
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Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic Procedure
NBS003DU
1.
INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
Yes or No
Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No
>> GO TO 7.
2.
CHECK OVERALL FUNCTION
With CONSULT-II
1.
Start engine.
2.
Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
3.
Make sure that each circuit produces a momentary engine
speed drop.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
21
22
23
40
41
42
L/W
R/Y
R/B
R/G
L/Y
W/L
Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2
[Engine is running]
●
Warm-up condition
●
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle.
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,000 rpm.
BATTERY VOLTAGE
(11 - 14V)
SEC984C
SEC985C
PBIB0133E
EC-630
FUEL INJECTOR
Revision: 2006 August
2006 Murano
3.
CHECK FUNCTION OF FUEL INJECTOR-I
Without CONSULT-II
1.
Stop engine.
2.
Disconnect harness connector F29, F201.
3.
Turn ignition switch ON.
4.
Check voltage between harness connector F29 terminal 5 and
ground with CONSULT-II or tester.
5.
Turn ignition switch OFF.
6.
Disconnect ECM harness connector.
7.
Check harness continuity between harness connector F29 ter-
minals and ECM terminals as follows.
Refer to Wiring Diagram.
8.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M82, F102
●
Fuse block (J/B) connector M1
●
10A fuse
●
Harness for open or short between harness connector F29 and fuse
●
Harness for open or short between harness connector F29 and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB2618E
Voltage: Battery voltage
Cylinder
Harness connector F29
terminal
ECM terminal
1
6
23
3
2
22
5
1
21
Continuity should exist.
PBIB2323E
FUEL INJECTOR
EC-631
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Revision: 2006 August
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5.
CHECK FUNCTION OF FUEL INJECTOR-II
Provide battery voltage between harness connector F201 as follows
and then interrupt it. Listen to each fuel injector operating sound.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 7.
6.
CHECK FUNCTION OF FUEL INJECTOR-III
1.
Reconnect all harness connector disconnected.
2.
Start engine.
3.
Listen to fuel injectors No. 2, No. 4, No.6 operating sound.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
Cylinder
Harness connector F201 terminal
(+)
(–)
1
5
6
3
5
2
5
5
1
Operating sound should exist.
PBIB2324E
Clicking noise should exist.
PBIB1986E
EC-632
FUEL INJECTOR
Revision: 2006 August
2006 Murano
7.
CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect fuel injector harness connector.
3.
Turn ignition switch ON.
4.
Check voltage between fuel injector terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M82, F102
●
Harness connectors F201, F29
●
Fuse block (J/B) connector M1
●
10A fuse
●
Harness for open or short between fuel injector and fuse
>> Repair harness or connectors.
9.
CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between fuel injector terminal 2 and ECM terminals 21, 22, 23, 40, 41, 42.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 11.
NG
>> GO TO 10.
PBIB3200E
Voltage: Battery voltage
PBIB0582E
Continuity should exist.
FUEL INJECTOR
EC-633
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10.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors F29, F201
●
Harness for open or short between fuel injector and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
11.
CHECK FUEL INJECTOR
Refer to
EC-633, "Component Inspection"
OK or NG
OK
>> GO TO 12.
NG
>> Replace fuel injector.
12.
CHECK INTERMITTENT INCIDENT
Refer to
EC-142, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Component Inspection
NBS003DV
FUEL INJECTOR
1.
Disconnect fuel injector harness connector.
2.
Check resistance between terminals as shown in the figure.
Removal and Installation
NBS003DW
FUEL INJECTOR
Refer to
EM-41, "FUEL INJECTOR AND FUEL TUBE"
.
Resistance: 11.1 - 14.5
Ω
[at 10 - 60
°
C (50 - 140
°
F)]
PBIB1727E
EC-634
FUEL PUMP
Revision: 2006 August
2006 Murano
FUEL PUMP
PFP:17042
Description
NBS003DX
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for 1 second after the ignition switch is turned ON to improve engine start-
ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows that
the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when the
ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
COMPONENT DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.
CONSULT-II Reference Value in Data Monitor Mode
NBS003DY
Specification data are reference values.
Sensor
Input Signal to ECM
ECM Function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
Fuel pump control
Fuel pump relay
Battery
Battery voltage*
Condition
Fuel pump operation
Ignition switch is turned to ON.
Operates for 1 second.
Engine running and cranking
Operates.
When engine is stopped
Stops in 1.5 seconds.
Except as shown above
Stops.
PBIB1356E
MONITOR ITEM
CONDITION
SPECIFICATION
FUEL PUMP RLY
●
For 1 second after turning ignition switch ON
●
Engine running or cranking
ON
●
Except above conditions
OFF
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