Nissan Murano Z50 (2006 year). Manual - part 71

 

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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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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 

DI-27, "System Description"

  in “UNIFIED METER AND A/C AMP”.

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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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 

LT-219, "ILLUMINA-

TION"

 .

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

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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

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COMBINATION METERS

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Schematic

NKS001S3

TKWB2600E

COMBINATION METERS

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Wiring Diagram — METER —

NKS001S4

TKWB0481E

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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

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COMBINATION METERS

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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 

DI-23, "FUEL LEVEL SEN-

SOR UNIT"

 .

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

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Trouble Diagnosis

NKS001S9

HOW TO PERFORM TROUBLE DIAGNOSIS

1.

Confirm the symptom or customer complaint.

2.

Perform preliminary check. Refer to 

DI-16, "PRELIMINARY CHECK"

 .

3.

According to the symptom chart, repair or replace the cause of the symptom. Refer to 

DI-16, "Symptom

Chart"

 .

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 

DI-15, "OPERATION PROCEDURE"

 .

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

AMP)"

 .

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 

DI-17, "Power Supply and

Ground Circuit Inspection"

 .

OK or NG

OK

>> Check odo/trip meter switch. Refer to 

DI-23, "Odo/Trip Meter and Illumination Control Switch

Inspection"

 .

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 

DI-23, "Odo/Trip Meter and Illumination Control Switch 

Inspection"

 .

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 

PG-3, "POWER

SUPPLY ROUTING CIRCUIT"

 .

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

Revision: 2006 August

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 

BRC-67, "CONSULT-II Functions

(ABS)"

  (with VDC system) or 

BRC-20, "CONSULT- II

Functions (ABS)"

  (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 

DI-37,

"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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