Nissan Murano Z50 (2005 year). Manual

COMBINATION METERS

DI-5

Revision: 2005 August

2005 Murano

HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER

●

The vehicle speed signal and the memory signals from the meter memory circuit are processed by the
combination meter and the mileage is displayed.

●

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 to releasing it.

●

When resetting with trip A displayed, only trip A display is reset
(Trip B operates the same way).

SEL175W

PKIA2480E

DI-6

COMBINATION METERS

Revision: 2005 August

2005 Murano

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.

SPEEDOMETER

ABS actuator and electric unit (control unit) provides a vehicle speed signal to the unified meter and A/C amp.
with CAN communication line. After unified meter and A/C amp. received the vehicle speed signal, it changes
the signal to 8 pulse signal and provides the 8 pulse signal to the combination meter for the speedometer.

TACHOMETER

The tachometer indicates engine speed in revolutions per minute (rpm).
ECM provides an engine speed signal to unified meter and A/C amp. with CAN communication line. Unified
meter and A/C amp. provides an engine speed signal to combination meter for tachometer with communica-
tion line between unified meter and A/C amp. and combination meter.

WATER TEMPERATURE GAUGE

The water temperature gauge indicates the engine coolant temperature.
ECM provides a engine coolant temperature signal to unified meter and A/C amp. with CAN communication
line. Unified meter and A/C amp. provides a water temperature signal to combination meter for water temper-
ature gauge with communication line between unified meter and A/C amp. and combination meter.

FUEL GAUGE

The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by a variable ground signal 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 an fuel level signal to combination meter for fuel gauge with communica-
tion line between unified meter and A/C amp. and combination meter.

DI-12

COMBINATION METERS

Revision: 2005 August

2005 Murano

Terminals and Reference Value for Combination Meter

AKS00D4U

Terminal

No.

Wire

color

Item

Measuring condition

Reference value (V)

Ignition

switch

Operation or condition

V/W

Vehicle speed signal
(8-pulse)

Speedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]

NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).

R/W

Illumination signal

Lighting switch ON, then
operate the illumination
control switch.

<e.g.> When brightness level is midway.

Lighting switch OFF

Approx. 0

R/L

TX communication line (To
unified meter and A/C
amp.)

—

R/B

RX communication line
(From unified meter and A/
C amp.)

—

Ignition switch ON or
START

—

Battery voltage

Y/R

Battery power supply

OFF

—

Battery voltage

Ground

—

Approx. 0

—

Illumination control switch
(+)

—

Refer to

DI-23, "Odo/Trip Meter and Illu-

mination Control Switch Inspection"

Illumination control switch
(–)

—

Odo/trip meter switch

—

Odo/trip meter and illumi-
nation control switch
ground

—

PKIA1935E

SKIA5872E

SKIA3361E

SKIA3362E

COMBINATION METERS

DI-13

Revision: 2005 August

2005 Murano

Terminals and Reference Value for Unified Meter and A/C Amp.

AKS00D4V

Terminal

No.

Wire

color

Item

Measuring condition

Reference value (V)

Ignition

switch

Operation or condition

CAN H

—

R/B

TX communication line
(To combination meter)

—

CAN L

—

R/L

RX communication line
(From combination meter)

—

Y/R

Battery power supply

OFF

—

Battery voltage

Ignition switch ON or
START

—

Battery voltage

V/W

Vehicle speed signal
(8-pulse)

Speedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]

NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).

G/B

Fuel level sensor signal

—

Refer to

DI-25, "FUEL LEVEL SEN-

SOR UNIT CHECK"

Ground (For power)

—

Approx. 0

Ground

—

Approx. 0

B/W

Fuel level sensor signal
ground

—

Approx. 0

W/L

Ignition switch ON

—

Battery voltage

SKIA3362E

SKIA3361E

PKIA1935E

DI-14

COMBINATION METERS

Revision: 2005 August

2005 Murano

Self-Diagnosis Mode of Combination Meter

AKS00D4W

SELF-DIAGNOSIS FUNCTION

●

Odo/trip meter segment and CVT indicator segment operation can be checked in self-diagnosis mode.

●

Meters/gauges can be checked in self-diagnosis mode.

OPERATION PROCEDURE

Turn ignition switch ON, and switch the odo/trip meter to “trip A” or “trip B”.

NOTE:
If the diagnosis function is activated with the trip meter A displayed, the mileage on the trip meter A will
indicate 0000.0 miles, but the actual trip mileage will be retained. (Trip B operates the same way.)

Turn ignition switch OFF.

While pushing the odo/trip meter switch, turn ignition switch ON
again.

Make sure the trip meter displays “0000.0”.

Push the odo/trip meter switch at least 3 times. (Within 7 sec-
onds after the ignition switch is turned ON.)

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 diagnosis mode.

Push the odo/trip meter switch. Each meter/gauge should indi-
cate as shown in the figure while pushing odo/trip meter switch.
(At this time, the low-fuel warning lamp goes off.)

CONSULT-II Function (METER A/C AMP)

AKS00D4X

Refer to

DI-31, "CONSULT-II Function (METER A/C AMP)"

in “UNIFIED METER AND A/C AMP”.

PKIA2480E

SKIA4428E

PKIA2482E

COMBINATION METERS

DI-15

Revision: 2005 August

2005 Murano

Trouble Diagnosis

AKS00D4Y

HOW TO PERFORM TROUBLE DIAGNOSIS

Confirm the symptom or customer complaint.

Perform diagnosis according to preliminary check. Refer to

DI-15, "PRELIMINARY CHECK"

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

DI-16, "Symptom

Chart 1"

Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.

INSPECTION END

PRELIMINARY CHECK

CHECK SELF-DIAGNOSTIC RESULTS OF UNIFIED METER AND A/C AMP.

Select “METER A/C AMP” on CONSULT-II, and perform self-diagnosis of unified meter and A/C amp. Refer to

DI-31, "CONSULT-II Function (METER A/C AMP)"

Self-diagnostic results content

No malfunction detected>>GO TO 2.
Malfunction detected>> Go to

DI-16, "Symptom Chart 2"

CHECK WARNING LAMP ILLUMINATION

Turn ignition switch ON.

Do warning lamps (such as malfunction indicator lamp and oil pressure warning lamp) illuminate?

YES

>> GO TO 3.

>> Check power supply circuit of combination meter when ignition switch is ON. Refer to

DI-17,

"Power Supply and Ground Circuit Inspection"

CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER

Perform combination meter self-diagnosis. Refer to

DI-14, "OPERATION PROCEDURE"

Does self-diagnosis function operate?

YES

>> GO TO 4.

>> Check the following.

●

Battery power supply circuit and ground circuit of combination meter. Refer to

DI-17, "Power

Supply and Ground Circuit Inspection"

●

Odo/trip meter switch. Refer to

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

tion"

CHECK ODO/TRIP METER OPERATION

Check segment display status of odo/trip meter.

Is the display normal?

YES

>> GO TO 5.

>> Replace combination meter.

SEL176W

DI-16

COMBINATION METERS

Revision: 2005 August

2005 Murano

CHECK LOW-FUEL WARNING LAMP ILLUMINATION CONFIRMATION

During low-fuel warning lamp check, confirm illumination of low-fuel warning lamp.

OK or NG

>> GO TO 6.

>> Replace combination meter.

CHECK COMBINATION METER CIRCUIT

Check indication of each meter/gauge in self-diagnosis mode.

OK or NG

>> Go to

DI-16, "Symptom Chart 1"

>> Replace combination meter.

Symptom Chart 1

AKS00D4Z

Symptom Chart 2

AKS00D50

Condition of odo/trip meter switch

Low-fuel warning lamp

Pushed

Does not illuminate.

Released

Illuminates.

PKIA2482E

Trouble phenomenon

Possible cause

Indication is irregular for the speedometer and odo/trip meter.

Refer to

DI-19, "Vehicle Speed Signal Inspection"

Tachometer indication is malfunction.

Refer to

DI-20, "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-21, "Fuel Level Sensor Signal Inspection"

Low-fuel warning lamp indication is irregular.

CVT position indicator is malfunction.

Refer to

DI-58, "CVT Indicator Is Malfunction"

Illumination control does not operate.

Refer to

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

Inspection"

Displayed item [Code]

Inspection contents

Possible cause

CAN COMM CIRC
[U1000]

Inspect the CAN communication.

Refer to

DI-34, "DTC [U1000] CAN Communication Circuit"

CAUTION:

Even when there is no malfunction on CAN communication sys-
tem, malfunction may be misinterpreted when battery has low volt-
age (when maintaining 7 - 8 V for about 2 seconds) or 10A fuse [No.
19, located in the fuse block (J/B)] fuse is disconnected.

METER COMM CIRC
[B2202]

Inspect the communication line
between combination meter and
unified meter and A/C amp.

Refer to

DI-34, "DTC [B2202] Meter Communication Circuit"

VEHICLE SPEED CIRC
[B2205]

Inspect the vehicle speed input
signal.

Refer to

DI-37, "DTC [B2205] Vehicle Speed Circuit"

CAUTION:

Even when there is no malfunction on speed signal system, mal-
function may be misinterpreted when battery has low voltage
(when maintaining 7 - 8 V for about 2 seconds).

COMBINATION METERS

DI-17

Revision: 2005 August

2005 Murano

Power Supply and Ground Circuit Inspection

AKS00D51

CHECK FUSE

Check for blown combination meter and unified meter and A/C amp. fuses.

OK or NG

>> GO TO 2.

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to

PG-

3, "POWER SUPPLY ROUTING CIRCUIT"

CHECK POWER SUPPLY CIRCUIT

Check voltage between combination meter harness connector
M25 terminals 20 (O), 21 (Y/R) and ground.

Check voltage between unified meter and A/C amp. harness
connector terminals and ground.

OK or NG

>> GO TO 3.

>> Check the following.

●

Harness between combination meter and fuse

●

Harness between unified meter and A/C amp. and fuse

Unit

Power source

Fuse No.

Combination meter

Battery

Unified meter and A/C amp.

Battery

Combination meter

Ignition switch ON or START

Unified meter and A/C amp.

Ignition switch ON or START

Ignition switch ON

10, 11

Terminals

Ignition switch position

(+)

(–)

OFF

Connector

Terminal

(Wire color)

M25

20 (O)

Ground

0 V

Battery voltage

21 (Y/R)

Battery voltage

PKIB3970E

Terminals

Ignition switch position

(+)

(–)

OFF

Connector

Terminal

(Wire color)

M50

21 (Y/R)

Ground

Battery voltage

22 (G)

0 V

Battery voltage

M51

46 (W/L)

0 V

Battery voltage

PKIB3971E

DI-18

COMBINATION METERS

Revision: 2005 August

2005 Murano

CHECK GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect combination meter connector and unified meter and
A/C amp. connector.

Check continuity between combination meter harness connector
M25 terminals 22 (B), 23 (B), 24 (B) and ground.

Check continuity between unified meter and A/C amp. harness
connector M50 terminals 29 (B), 30 (B) and ground.

OK or NG

>> INSPECTION END

>> Repair harness or connector.

22 (B) – Ground

: Continuity should exist.

23 (B) – Ground

24 (B) – Ground

PKIB3972E

29 (B) – Ground

: Continuity should exist.

30 (B) – Ground

PKIB3973E

COMBINATION METERS

DI-19

Revision: 2005 August

2005 Murano

Vehicle Speed Signal Inspection

AKS00D52

Symptom: Indication is irregular for the speedometer and odo/trip meter.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

Perform the ABS actuator and electric unit (control unit) self-diagnosis. Refer to

BRC-70, "CONSULT-II Func-

tions"

(with VDC system) or

BRC-20, "CONSULT- II Functions"

(without VDC system).

Self-diagnostic results content

No malfunction detected >>GO TO 2.
Malfunction detected >>Check applicable parts, and repair or replace corresponding parts.

CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL

Start engine and drive vehicle at approximately 40 km/h (25 MPH).

Check voltage signal between unified meter and A/C amp. har-
ness connector M50 terminal 26 (V/W) and ground.

OK or NG

>> GO TO 3.

●

If monitor indicates “0 V” constantly, repair or replace malfunctioning parts after checking each
unit inputting vehicle speed signal (8 pulse), harness and connector between each unit and uni-
fied meter and A/C amp.

●

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."

CHECK CONTINUITY BETWEEN COMBINATION METER AND UNIFIED METER AND A/C AMP.

Turn ignition switch OFF.

Disconnect combination meter connector and unified meter and
A/C amp. connector.

Check continuity between combination meter harness connector
M25 terminal 14 (V/W) and unified meter and A/C amp. harness
connector M50 terminal 26 (V/W).

OK or NG

>> Replace combination meter.

>> Repair harness or connector.

26 (V/W) – Ground:

NOTE:
Maximum voltage may be
5 V due to specifications
(connected units).

SKIB0338E

PKIA1935E

14 (V/W) – 26 (V/W)

: Continuity should exist.

PKIB3976E

DI-20

COMBINATION METERS

Revision: 2005 August

2005 Murano

Engine Speed Signal Inspection

AKS00D53

Symptom: Tachometer indication is malfunction.

CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL

Start engine and select “METER A/C AMP” on CONSULT-II.

Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with tachometer pointer of combina-
tion meter.

OK or NG

>> GO TO 2.

>> Replace combination meter.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

Select “ENGINE” on CONSULT-II.

Using “ENG SPEED” on “DATA MONITOR”, print out the CON-
SULT-II screen when the engine is idling.

Select “METER A/C AMP” on CONSULT-II.

Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” of the idling speed with that of the
“ENG SPEED”.

OK or NG

>> Perform ECM self-diagnosis. Refer to

EC-126, "CON-

SULT-II Function (ENGINE)"

>> Replace unified meter and A/C amp. Refer to

DI-37,

"Removal and Installation of Unified Meter and A/C
Amp."

Engine Coolant Temperature Signal Inspection

AKS00D54

Symptom: Water temperature gauge indication is malfunction.

CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL

Start engine and select “METER A/C AMP” on CONSULT-II.

Using “W TEMP METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with water temperature gauge
pointer of combination meter.

OK or NG

>> GO TO 2.

>> Replace combination meter.

PKIA2090E

SKIA4367E

Water temperature gauge pointer

Reference value of data monitor [

C (

F)]

Hot

Approx. 130 (266)

Middle

Approx. 70 - 105 (158 - 221)

Cold

Approx. 50 (122)

PKIA2091E

Nissan Murano Z50 (2005 year). Manual - part 73