Nissan Murano Z50 (2005 year). Manual — part 73
COMBINATION METERS
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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.
COMBINATION METERS
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Component Parts and Harness Connector Location
AKS00D4Q
PKIA2477E
DI-8
COMBINATION METERS
Revision: 2005 August
2005 Murano
Arrangement of Combination Meter
AKS00D4R
PKIB4911E
COMBINATION METERS
DI-9
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Circuit Diagram
AKS00D4S
TKWB0480E
DI-10
COMBINATION METERS
Revision: 2005 August
2005 Murano
Wiring Diagram — METER —
AKS00D4T
TKWB0481E
COMBINATION METERS
DI-11
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TKWB0902E
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
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 switch ON or
START
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
SKIA5872E
SKIA3361E
SKIA3362E
COMBINATION METERS
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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
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 switch ON or
START
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 switch ON
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
1.
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.)
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 sec-
onds 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 diagnosis mode.
7.
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
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Trouble Diagnosis
AKS00D4Y
HOW TO PERFORM TROUBLE DIAGNOSIS
1.
Confirm the symptom or customer complaint.
2.
Perform diagnosis according to 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 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
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.
NO
>> Check power supply circuit of combination meter when ignition switch is ON. Refer to
"Power Supply and Ground Circuit Inspection"
3.
CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER
Perform combination meter self-diagnosis. Refer to
.
Does self-diagnosis function operate?
YES
>> GO TO 4.
NO
>> Check the following.
●
Battery power supply circuit and ground circuit of combination meter. Refer to
Supply and Ground Circuit Inspection"
.
●
Odo/trip meter switch. Refer to
DI-23, "Odo/Trip Meter and Illumination Control Switch Inspec-
4.
CHECK ODO/TRIP METER OPERATION
Check segment display status of odo/trip meter.
Is the display normal?
YES
>> GO TO 5.
NO
>> Replace combination meter.
SEL176W
DI-16
COMBINATION METERS
Revision: 2005 August
2005 Murano
5.
CHECK LOW-FUEL WARNING LAMP ILLUMINATION CONFIRMATION
During low-fuel warning lamp check, confirm illumination of low-fuel warning lamp.
OK or NG
OK
>> GO TO 6.
NG
>> Replace combination meter.
6.
CHECK COMBINATION METER CIRCUIT
Check indication of each meter/gauge in self-diagnosis mode.
OK or NG
OK
>> Go to
NG
>> 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
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
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Power Supply and Ground Circuit Inspection
AKS00D51
1.
CHECK FUSE
Check for blown combination meter and unified meter and A/C amp. fuses.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to
3, "POWER SUPPLY ROUTING CIRCUIT"
.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Check voltage between combination meter harness connector
M25 terminals 20 (O), 21 (Y/R) and ground.
2.
Check voltage between unified meter and A/C amp. harness
connector terminals and ground.
OK or NG
OK
>> GO TO 3.
NG
>> 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
21
Unified meter and A/C amp.
Battery
19
Combination meter
Ignition switch ON or START
14
Unified meter and A/C amp.
Ignition switch ON or START
12
Ignition switch ON
10, 11
Terminals
Ignition switch position
(+)
(–)
OFF
ON
Connector
Terminal
(Wire color)
M25
20 (O)
Ground
0 V
Battery voltage
21 (Y/R)
Battery voltage
Battery voltage
PKIB3970E
Terminals
Ignition switch position
(+)
(–)
OFF
ON
Connector
Terminal
(Wire color)
M50
21 (Y/R)
Ground
Battery voltage
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
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and unified meter and
A/C amp. connector.
3.
Check continuity between combination meter harness connector
M25 terminals 22 (B), 23 (B), 24 (B) and ground.
4.
Check continuity between unified meter and A/C amp. harness
connector M50 terminals 29 (B), 30 (B) and ground.
OK or NG
OK
>> INSPECTION END
NG
>> 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
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Revision: 2005 August
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Vehicle Speed Signal Inspection
AKS00D52
Symptom: Indication is irregular for the speedometer and odo/trip meter.
1.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Perform the ABS actuator and electric unit (control unit) self-diagnosis. Refer to
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.
2.
CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1.
Start engine and 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 (V/W) and ground.
OK or NG
OK
>> GO TO 3.
NG
>>
●
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
37, "Removal and Installation of Unified Meter and A/C Amp."
3.
CHECK CONTINUITY BETWEEN COMBINATION METER AND UNIFIED METER AND A/C AMP.
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and unified meter and
A/C amp. connector.
3.
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
OK
>> Replace combination meter.
NG
>> 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.
1.
CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1.
Start engine and select “METER A/C AMP” on CONSULT-II.
2.
Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with tachometer pointer of combina-
tion meter.
OK or NG
OK
>> GO TO 2.
NG
>> Replace combination meter.
2.
CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1.
Select “ENGINE” on CONSULT-II.
2.
Using “ENG SPEED” on “DATA MONITOR”, print out the CON-
SULT-II screen when the engine is idling.
3.
Select “METER A/C AMP” on CONSULT-II.
4.
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
OK
>> Perform ECM self-diagnosis. Refer to
NG
>> Replace unified meter and A/C amp. Refer to
"Removal and Installation of Unified Meter and A/C
Amp."
Engine Coolant Temperature Signal Inspection
AKS00D54
Symptom: Water temperature gauge indication is malfunction.
1.
CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1.
Start engine and select “METER A/C AMP” on CONSULT-II.
2.
Using “W TEMP METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with water temperature gauge
pointer of combination meter.
OK or NG
OK
>> GO TO 2.
NG
>> 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
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