Nissan Murano Z50 (2006 year). Manual — part 71
PRECAUTION
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PRECAUTION
PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS001RY
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
●
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
●
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
●
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
DI-4
COMBINATION METERS
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2006 Murano
COMBINATION METERS
PFP:24814
System Description
NKS001S0
UNIFIED METER CONTROL UNIT
●
Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled by the
unified meter control unit, which is built into the combination meter. Unified meter control unit receives sig-
nals from unified meter and A/C amp.
●
Warning lamp and indicator lamp of combination meter are controlled by signals drawn from the unified
meter and A/C amp.
●
Digital meter is adopted for odo/trip meter.
●
Odo/trip meter and CVT indicator segments can be checked in self-diagnosis mode.
●
Meters/gauges can be checked in self-diagnosis mode.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
●
through 10A fuse [No. 19, located in the fuse block (J/B)]
●
to unified meter and A/C amp. terminal 21,
●
through 10A fuse [No. 21, located in the fuse block (J/B)]
●
to combination meter terminal 21.
With the ignition switch in the ON or START position, power is supplied
●
through 10A fuse [No. 14, located in the fuse block (J/B)]
●
to combination meter terminal 20,
●
through 10A fuse [No. 12, located in the fuse block (J/B)]
●
to unified meter and A/C amp. terminal 22.
With the ignition switch in the ON position, power is supplied
●
through 15A fuse [No. 10, located in the fuse block (J/B)], and
●
through 15A fuse [No. 11, located in the fuse block (J/B)]
●
to unified meter and A/C amp. terminal 46.
Ground is supplied
●
to combination meter terminals 22, 23 and 24
●
through grounds M14 and M78,
●
to unified meter and A/C amp. terminals 29 and 30
●
through grounds M14 and M78.
UNIFIED METER AND A/C AMP.
Refer to
COMBINATION METERS
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SPEEDOMETER
The speedometer indicates the vehicle speed.
●
ABS actuator and electric unit (control unit) provides a vehicle speed signal to the unified meter and A/C
amp. with CAN communication.
●
Unified meter and A/C amp. converts the vehicle speed signal to the 8-pulse signal, and outputs the vehi-
cle speed signal (8-pulse) to combination meter.
●
Combination meter indicates the vehicle speed according to vehicle speed signal (8-pulse) signal.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm).
●
ECM provides engine speed signal to unified meter and A/C amp. with CAN communication.
●
Unified meter and A/C amp. transmits engine speed signal to combination meter with communication line.
●
Combination meter indicates the engine speed according to engine speed signal.
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
●
ECM provides engine coolant temperature signal to unified meter and A/C amp. with CAN communica-
tion.
●
Unified meter and A/C amp. transmits engine coolant temperature signal to combination meter with com-
munication line.
●
Combination meter indicates the engine coolant temperature according to engine coolant temperature
signal.
SKIB7332E
PKIB7631E
PKIB7632E
DI-6
COMBINATION METERS
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2006 Murano
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
●
Unified meter and A/C amp. reads a resistor signal from fuel level sensor.
Signal is supplied
–
from unified meter and A/C amp. terminal 36
–
through the fuel level sensor unit and fuel pump (main) terminals 5 and 7
–
through the fuel level sensor unit (sub), and
–
through the fuel level sensor unit and fuel pump (main) terminals 6 and 2
–
to unified meter and A/C amp. terminal 28 for the fuel gauge.
●
Unified meter and A/C amp. provides a fuel level signal to combination meter with communication line.
●
Combination meter indicates the approximate fuel level according to the fuel level signal.
ODO/TRIP METER
●
ABS actuator and electric unit (control unit) provides a vehicle speed signal to the unified meter and A/C
amp. with CAN communication.
●
Unified meter and A/C amp. converts the vehicle speed signal to the 8-pulse signal, and outputs the vehi-
cle speed signal (8-pulse) to combination meter.
●
Combination meter uses the vehicle speed signal (8-pulse) to calculate the mileage, and displays it.
How to Change The Display For Odo/trip Meter
Depressing the odo/trip meter switch toggles the mode in the following order.
●
The odo/trip meter display mode toggling and trip display reset-
ting can be identified by the amount of time that elapses from
pressing the odo/trip meter switch (1) to releasing it.
●
When resetting with “trip A” displayed, only “trip A” display is
reset.
NOTE:
The record of the odo meter is kept even if the battery cable is dis-
connected. The record of the trip meter is erased when the battery
cable is disconnected.
SEL175W
SKIB7553E
COMBINATION METERS
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COMBINATION METER ILLUMINATION CONTROL
Daytime Mode
When ignition switch is turned ON, combination meter illumination is turned ON by unified meter control unit.
Nighttime Mode
●
Unified meter control unit is transferred to nighttime mode, with ignition switch turned ON and position
light request signal from BCM with CAN communication.
●
When nighttime mode, illumination control switch (1) illumination
turns ON by unified meter control unit. Each illumination is con-
trolled by unified meter control unit.
●
Each illumination can be adjusted to 16 step by illumination con-
trol switch (1) in nighttime mode.
NOTE:
For further details of illumination circuit, refer to
FAIL-SAFE
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malunc-
tion.
2 : + (Bright)
3 : – (Dark)
SKIB7554E
Function
Fail-safe operation
Speedometer
Reset to zero.
Tachometer
Fuel gauge
Water temperature gauge
Illumination control
Combination meter illumination
Change to nighttime mode.
Odo/trip meter
Integrate in response to 8-pulse input.
CVT position indicator
The display turns OFF.
Warning buzzer
The warning buzzer turns OFF.
Warning lamp/indicator lamp
ABS warning lamp
The lamp turns ON.
VDC OFF indicator
SLIP indicator
Brake warning lamp
High beam indicator
The lamp turns OFF.
Door warning lamp
Low tire pressure warning lamp
SET indicator lamp
CRUISE indicator lamp
AWD warning lamp
AWD LOCK indicator lamp
Oil pressure warning lamp
Turn signal indicator
Malfunction indicator lamp
CVT indicator lamp
DI-8
COMBINATION METERS
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Component Parts and Harness Connector Location
NKS001S1
SKIB7555E
COMBINATION METERS
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Arrangement of Combination Meter
NKS001S2
SKIB7333E
DI-10
COMBINATION METERS
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2006 Murano
Schematic
NKS001S3
TKWB2600E
COMBINATION METERS
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Wiring Diagram — METER —
NKS001S4
TKWB0481E
DI-12
COMBINATION METERS
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TKWB0902E
COMBINATION METERS
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Terminals and Reference Value for Combination Meter
NKS001S5
Terminal
No.
Wire
color
Item
Measuring condition
Reference value (V)
Ignition
switch
Operation or condition
14
V/W
Vehicle speed signal
(8-pulse)
ON
Speedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]
NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).
15
R/W
Illumination signal
ON
Lighting switch ON, then
operate the illumination
control switch.
<e.g.> When brightness level is midway.
Lighting switch OFF
Approx. 0
18
R/L
TX communication line (To
unified meter and A/C
amp.)
ON
—
19
R/B
RX communication line
(From unified meter and A/
C amp.)
ON
—
20
O
Ignition power supply
ON
—
Battery voltage
21
Y/R
Battery power supply
OFF
—
Battery voltage
22
B
Ground
ON
—
Approx. 0
23
24
27
—
Illumination control switch
(+)
—
—
Refer to
DI-23, "Odo/Trip Meter and Illu-
mination Control Switch Inspection"
28
Illumination control switch
(–)
—
—
29
Odo/trip meter switch
—
—
30
Odo/trip meter and illumi-
nation control switch
ground
—
—
PKIA1935E
SKIB8011E
SKIA3361E
SKIA3362E
DI-14
COMBINATION METERS
Revision: 2006 August
2006 Murano
Terminals and Reference Value for Unified Meter and A/C Amp.
NKS001S6
Terminal
No.
Wire
color
Item
Measuring condition
Reference value (V)
Ignition
switch
Operation or condition
1
L
CAN H
—
—
—
9
R/B
TX communication line
(To combination meter)
ON
—
11
Y
CAN L
—
—
—
19
R/L
RX communication line
(From combination meter)
ON
—
21
Y/R
Battery power supply
OFF
—
Battery voltage
22
G
Ignition power supply
ON
—
Battery voltage
26
V/W
Vehicle speed signal
(8-pulse)
ON
Speedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]
NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).
28
G/B
Fuel level sensor signal
—
—
Refer to
.
29
B
Ground (For power)
ON
—
Approx. 0
30
Ground
ON
—
Approx. 0
36
B/W
Fuel level sensor signal
ground
ON
—
Approx. 0
46
W/L
Ignition power supply
ON
—
Battery voltage
SKIA3362E
SKIA3361E
PKIA1935E
COMBINATION METERS
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Self-Diagnosis Mode of Combination Meter
NKS001S7
SELF-DIAGNOSIS FUNCTION
●
Odo/trip meter and CVT indicator segments operation can be checked in self-diagnosis mode.
●
Meters/gauges can be checked in self-diagnosis mode.
OPERATION PROCEDURE
1.
Turn ignition switch ON, and switch the odo/trip meter to “trip A” or “trip B”.
NOTE:
If the self-diagnosis function is activated with the “trip A” displayed, only “trip A” display is reset.
2.
Turn ignition switch OFF.
3.
While pushing the odo/trip meter switch, turn ignition switch ON
again.
4.
Make sure the trip meter displays “0000.0”.
5.
Push the odo/trip meter switch at least 3 times (within 7 seconds
after the ignition switch is turned ON)
6.
All the segments on the odo/trip meter and CVT indicator illuminate, and simultaneously the low-fuel
warning lamp indicator illuminates. At this time, the unified meter control unit is turned to self-diagnosis
mode.
NOTE:
●
Check odo/trip meter switch and combination meter power supply and ground circuit when self-diagno-
sis mode of combination meter dose not start. Replace combination meter if the results of the check are
normal.
●
If any of the segments are not displayed, replace combination meter.
7.
Each meter/gauge activates during pressing odo/trip meter
switch. (Then low-fuel warning lamp turns OFF.)
NOTE:
●
If any of the meters/gauges are not activated, replace the
combination meter.
●
The figure is reference.
CONSULT-II Function (METER A/C AMP)
NKS001S8
Refer to
DI-30, "CONSULT-II Function (METER A/C AMP)"
in “UNIFIED METER AND A/C AMP”.
SKIB7553E
SKIA4428E
SKIB7556E
DI-16
COMBINATION METERS
Revision: 2006 August
2006 Murano
Trouble Diagnosis
NKS001S9
HOW TO PERFORM TROUBLE DIAGNOSIS
1.
Confirm the symptom or customer complaint.
2.
Perform preliminary check. Refer to
.
3.
According to the symptom chart, repair or replace the cause of the symptom. Refer to
4.
Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.
5.
INSPECTION END
PRELIMINARY CHECK
1.
CHECK OPERATION OF SELF-DIAGNOSIS MODE (COMBINATION METER)
Perform self-diagnosis mode of combination meter. Refer to
.
Does self-diagnosis mode operation normally?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)
Perform self-diagnosis of unified meter and A/C amp. Refer to
DI-30, "CONSULT-II Function (METER A/C
Self-diagnosis results
No malfunction detected >> INSPECTION END
Malfunction detected >> Check applicable parts, and repair or replace corresponding parts.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT OF COMBINATION METER
Check battery power supply and ground circuit of combination meter. Refer to
.
OK or NG
OK
>> Check odo/trip meter switch. Refer to
DI-23, "Odo/Trip Meter and Illumination Control Switch
NG
>> Repair malfunctioning part.
Symptom Chart
NKS001SA
Symptom
Possible cause
Speedometer and odo/trip meter indication is malfunction.
Refer to
DI-18, "Vehicle Speed Signal Inspection"
.
Tachometer indication is malfunction.
Refer to
DI-19, "Engine Speed Signal Inspection"
Water temperature gauge indication is malfunction.
Refer to
DI-20, "Engine Coolant Temperature Signal Inspection"
Fuel gauge indication is malfunction.
Refer to
DI-20, "Fuel Level Sensor Signal Inspection"
.
Low-fuel warning lamp indication is irregular.
CVT position indicator is malfunction.
Refer to
DI-56, "CVT Indicator Is Malfunction"
.
Illumination control does not operate.
Refer to
COMBINATION METERS
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Power Supply and Ground Circuit Inspection
NKS002CH
1.
CHECK FUSE
Check for blown combination meter fuses.
OK or NG
OK
>> GO TO 2.
NG
>> Be sure to eliminate cause of malfunction before installing new fuse. Refer to
.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector M25
terminals 20, 21 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check harness between combination meter and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector.
3.
Check continuity between combination meter harness connector
M25 terminals 22, 23, 24 and ground.
OK or NG
OK
>> INSPECTION END
NG
>> Repair harness or connector.
Power source
Fuse No.
Battery power supply
21
Ignition power supply
14
Terminals
Ignition switch position
(+)
(–)
OFF
ON
Connector
Terminal
M25
20
Ground
0 V
Battery voltage
21
Battery voltage
Battery voltage
PKIB3970E
22 – Ground
: Continuity should exist.
23 – Ground
24 – Ground
PKIB3972E
DI-18
COMBINATION METERS
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2006 Murano
Vehicle Speed Signal Inspection
NKS002CI
Symptom: Speedometer and odo/trip meter indication is malfunction.
1.
CHECK COMBINATION METER INPUT SIGNAL
1.
Connect CONSULT-II, and start engine.
2.
Select “METER A/C AMP” on CONSULT-II.
3.
Using “SPEED METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with speedometer pointer of combi-
nation meter.
OK or NG
OK
>> Perform self-diagnosis of ABS actuator and electric unit
(control unit). Refer to
(with VDC system) or
(without VDC system).
NG
>> GO TO 2.
2.
CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1.
Drive vehicle at approximately 40 km/h (25 MPH).
2.
Check voltage signal between unified meter and A/C amp. har-
ness connector M50 terminal 26 and ground.
OK or NG
OK
>> GO TO 3.
NG-1
>> If monitor indicates “0 V” constantly, perform the following.
1. Check each unit inputting vehicle speed signal (8-pulse), harness and connector between each
unit and unified meter and A/C amp.
2. Repair or replace malfunctioning parts.
NG-2
>> If monitor indicates “5 V” or “12 V” constantly, replace unified meter and A/C amp. Refer to
"Removal and Installation of Unified Meter and A/C Amp."
SKIB4578E
26 – Ground:
NOTE:
Maximum voltage may be
5 V due to specifications
(connected units).
SKIB0338E
PKIA1935E
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