Nissan Murano Z50 (2003 year). Manual — part 76
UNIFIED METER AND A/C AMP
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Input/output signal chart
T: Transmit R: Receive
Signals
ECM
TCM
Low
tire
pres-
sure
warn-
ing
con-
trol
unit
Dis-
play
unit
Dis-
play
con-
trol
unit
BCM
Uni-
fied
meter
and A/
C
amp.
Driver
seat
con-
trol
unit
AWD
con-
trol
unit
ABS
actua-
tor
and
elec-
tric
unit
(con-
trol
unit)
IPDM
E/R
CVT position indicator signal
T
R
Second position signal
R
T
Second position indicator signal
T
R
Engine speed signal
T
R
R
R
R
R
R
Engine status signal
T
R
Engine coolant temperature signal
T
R
Accelerator pedal position signal
T
R
R
Closed throttle position signal
T
R
Wide open throttle position signal
T
R
Key switch signal
T
R
Ignition switch signal
T
R
R
P range signal
T
R
Stop lamp switch signal
R
T
R
Fuel consumption monitor signal
T
R
CVT self-diagnosis signal
R
T
ABS operation signal
R
R
T
Air conditioner switch signal
R
T
A/C compressor request signal
T
R
A/C compressor feedback signal
T
R
Blower fan motor switch signal
R
T
A/C control signal
T
T
R
R
R
T
Cooling fan speed request signal
T
R
Position lights request signal
T
R
R
Low beam request signal
T
R
Low beam status signal
R
T
High beam request signal
T
R
R
High beam status signal
R
T
Front fog lights request signal
T
R
Vehicle speed signal
R
R
R
T
R
R
R
R
T
R
Sleep request 1 signal
T
R
Sleep request 2 signal
T
R
Door switch signal
R
T
R
R
T
R
R
R
Key fob ID signal
T
R
Key fob door unlock signal
T
R
DI-50
UNIFIED METER AND A/C AMP
Revision; 2004 April
2003 Murano
Turn indicator signal
T
R
Seat belt buckle switch signal
R
T
Oil pressure switch signal
R
T
T
R
Buzzer output signal
T
R
Fuel level sensor signal
R
T
Fuel level low warning signal
R
R
T
Malfunction indicator lamp signal
T
R
ASCD SET lamp signal
T
R
ASCD CRUISE lamp signal
T
R
Input shaft revolution signal
R
T
Output shaft revolution signal
R
T
Front wiper request signal
T
R
Front wiper stop position signal
R
T
Rear window defogger switch signal
T
R
Rear window defogger control signal
R
R
R
T
Engine and CVT integrated control
signal
T
R
R
T
Hood switch signal
R
T
Theft warning horn request signal
T
R
Horn chirp signal
T
R
Tire pressure signal
T
R
Tire pressure data signal
T
R
R
ABS warning lamp signal
R
T
Brake warning lamp signal
R
T
System setting signal
T
T
R
AWD warning lamp signal
R
T
AWD lock indicator lamp signal
R
T
AWD lock switch signal
T
R
Parking brake switch signal
R
T
R
Signals
ECM
TCM
Low
tire
pres-
sure
warn-
ing
con-
trol
unit
Dis-
play
unit
Dis-
play
con-
trol
unit
BCM
Uni-
fied
meter
and A/
C
amp.
Driver
seat
con-
trol
unit
AWD
con-
trol
unit
ABS
actua-
tor
and
elec-
tric
unit
(con-
trol
unit)
IPDM
E/R
UNIFIED METER AND A/C AMP
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TYPE 25/TYPE26/TYPE 27/TYPE 28/TYPE 29/TYPE 30/TYPE 31/TYPE 32
System Diagram
●
Type25
●
Type26
●
Type27
SKIA4926E
SKIA4927E
SKIA4928E
DI-52
UNIFIED METER AND A/C AMP
Revision; 2004 April
2003 Murano
●
Type28
●
Type29
●
Type30
SKIA4929E
SKIA4930E
SKIA4931E
UNIFIED METER AND A/C AMP
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●
Type31
●
Type32
SKIA4932E
SKIA4933E
DI-54
UNIFIED METER AND A/C AMP
Revision; 2004 April
2003 Murano
Input/output Signal Chart
T: Transmit R: Receive
Signals
ECM
TCM
Low
tire
pres-
sure
warn-
ing
con-
trol
unit
Dis-
play
unit
Dis-
play
con-
trol
unit
BCM
Uni-
fied
meter
and
A/C
amp.
Steer
ing
angle
sen-
sor
Drive
r seat
con-
trol
unit
AWD
con-
trol
unit
ABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)
IPDM
E/R
Engine and CVT integrated control
signal
T
R
R
T
Second position signal
R
T
VDC operation signal
R
R
T
Stop lamp switch signal
R
T
R
Key switch signal
T
R
Ignition switch signal
T
R
R
P range signal
T
R
R
Closed throttle position signal
T
R
Wide open throttle position signal
T
R
Second position indicator signal
T
R
R
Engine speed signal
T
R
R
R
R
R
R
Engine status signal
T
R
Engine coolant temperature signal
T
R
Accelerator pedal position signal
T
R
R
R
Fuel consumption monitor signal
T
R
CVT self-diagnosis signal
R
T
Input shaft revolution signal
R
T
R
Output shaft revolution signal
R
T
R
Air conditioner switch signal
R
T
A/C compressor request signal
T
R
A/C compressor feedback signal
T
R
T
Blower fan motor switch signal
R
T
A/C control signal
T
T
R
R
R
T
Cooling fan speed request signal
T
R
Position lights request signal
T
R
R
Low beam request signal
T
R
Low beam status signal
R
T
High beam request signal
T
R
R
High beam status signal
R
T
Front fog lights request signal
T
R
Vehicle speed signal
R
R
R
T
R
R
R
R
T
R
Sleep request 1 signal
T
R
Sleep request 2 signal
T
R
UNIFIED METER AND A/C AMP
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Door switch signal
R
T
R
R
T
R
R
R
Turn indicator signal
T
R
Key fob ID signal
T
R
Key fob door unlock signal
T
R
Seat belt buckle switch signal
R
T
Oil pressure switch signal
R
T
T
R
Buzzer output signal
T
R
Fuel level sensor signal
R
T
Fuel level low warning signal
R
R
T
Malfunction indicator signal
T
R
ASCD SET lamp signal
T
R
ASCD CRUISE lamp signal
T
R
Front wiper request signal
T
R
Front wiper stop position signal
R
T
Rear window defogger switch signal
T
R
Rear window defogger control signal
R
R
R
T
Hood switch signal
R
T
Theft warning horn request signal
T
R
Horn chirp signal
T
R
Steering angle sensor signal
T
R
Tire pressure signal
T
R
Tire pressure data signal
T
R
R
CVT position indicator signal
T
R
R
ABS warning lamp signal
R
T
VDC OFF indicator lamp signal
R
T
SLIP indicator lamp signal
R
T
Brake warning lamp signal
R
T
System setting signal
T
T
R
AWD warning lamp signal
R
T
AWD lock indicator lamp signal
R
T
AWD lock switch signal
T
R
Parking brake switch signal
R
T
R
Signals
ECM
TCM
Low
tire
pres-
sure
warn-
ing
con-
trol
unit
Dis-
play
unit
Dis-
play
con-
trol
unit
BCM
Uni-
fied
meter
and
A/C
amp.
Steer
ing
angle
sen-
sor
Drive
r seat
con-
trol
unit
AWD
con-
trol
unit
ABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)
IPDM
E/R
DI-56
UNIFIED METER AND A/C AMP
Revision; 2004 April
2003 Murano
Schematic
AKS005L0
TKWA0926E
UNIFIED METER AND A/C AMP
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CONSULT-II Function
AKS004GR
CONSULT-II executes the following functions by combining data reception and command transmission via the
communication line from unified meter and A/C amp. Self-diagnostic results and data monitor display.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1.
With the ignition switch OFF, connect “CONSULT-II” and “CON-
SULT-II CONVERTER” to the data link connector, then turn igni-
tion switch ON.
2.
Touch “START (NISSAN BASED VHCL)”.
3.
Touch “METER A/C AMP” on “SELECT SYSTEM” screen. If
“METER A/C AMP” is not indicated, go to
Data Link Connector (DLC) Circuit"
4.
Select “SELF-DIAG RESULTS”, “CAN DIAG SUPPORT MNTR”
or “DATA MONITOR”.
System part
Check item, diagnosis mode
Description
METER A/C AMP
Self-diagnostic results
Unified meter and A/C amp. check the conditions and indicates any error that
unified meter and A/C amp. memorized.
CAN diagnostic support monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Data monitor
Displays unified meter and A/C amp. input data in real time.
PBIB1300E
SAIA0450E
SKIA6338E
DI-58
UNIFIED METER AND A/C AMP
Revision; 2004 April
2003 Murano
SELF-DIAGNOSTIC RESULTS
Operation Procedure
1.
Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
2.
Self-diagnosis results are displayed.
Display Item List
“TIME” indicates the condition of the self-diagnosis results judged by each signal input.
●
Normal: In case of operating properly at the present in spite of having malfunction in the past, then “TIME”
indicates “1-63”.
●
Malfunction: Soon after detecting malfunctions by self-diagnoses or current malfunction, “0” is indicated.
After returning to normal condition, every time when ignition switch is turned to “OFF” from “ON”, time will be
added like “1”
→
“2”
→
“3”···“63”, and when the key operation is performed 64 times, the result of the self-diag-
noses will be erased. And if any malfunction is detected again, “0” will be indicated.
CAUTION:
“TIME” keeps showing “0” after returning to normal condition only in the case that incident history of
“CAN COMM CIRC [U1000]” remains because of low tire pressure warning control unit, display control
unit (with NAVI) or display unit (without NAVI) malfunction.
DATA MONITOR
Operation Procedure
1.
Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
2.
Touch either “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
3.
When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “MAIN SIG-
NALS” is selected, main items will be monitored.
SKIA4956E
CONSULT-ll display [Code]
Malfunction is detected when...
CAN COMM CIRC [U1000]
Malfunction is detected in CAN communication.
CAUTION:
Even when there is no malfunction on CAN communication system, malfunction may be
misinterpreted when battery has low voltage (when maintaining 7V-8V for about 2 seconds)
or 10A fuse [No. 19, located in the fuse block (J/B)] is disconnected.
METER COMM CIRC [B2202]
Malfunction is detected in communication of between combination meter and unified meter and A/
C amp.
VEHICLE SPEED CIRC [B2205]
When an erroneous speed signal is input for 1 seconds.
CAUTION:
Even when there is no malfunction on speed signal system, malfunction may be misinter-
preted when battery has low voltage (when maintaining 7V-8V for about 2 seconds).
MAIN SIGNALS
Monitors main signals.
SELECTION FROM MENU
Selects and monitors individual signal.
UNIFIED METER AND A/C AMP
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4.
Touch “START”.
5.
Touch “RECORD” while monitoring, then the status of the moni-
tored item can be recorded. To stop recording, touch “STOP”.
Display Item List
SKIA4957E
Display item [Unit]
MAIN SIGNALS
SELECTION
FROM MENU
Contents
SPEED METER [km/h] or [mph]
X
X
This is the angle correction value after the speed signal from
the ABS actuator and electric unit (control unit) is converted
into the vehicle speed.
SPEED OUTPUT [km/h] or [mph]
X
X
This is the angle correction value before the speed signal
from the ABS actuator and electric unit (control unit) is con-
verted into the vehicle speed.
TACHO METER [rpm]
X
X
This is the converted value for the engine speed signal from
the ECM.
W TEMP METER [
°
C] or [
°
F]
X
X
This is the converted value for the engine coolant tempera-
ture signal from the ECM.
FUEL METER [lit.]
X
X
This is the processed value for the signal (resistance value)
from the fuel gauge.
DISTANCE [km] or [mile]
X
X
This is the calculated value for the speed signal from the
ABS actuator and electric unit (control unit), the signal (resis-
tance signal) from the fuel gauge and fuel consumption from
ECM.
FUEL W/L [ON/OFF]
X
X
Indicates [ON/OFF] condition of low-fuel warning lamp.
MIL [ON/OFF]
X
Indicates [ON/OFF] condition of malfunction indicator lamp.
AIR PRES W/L [ON/OFF]
X
Indicates [ON/OFF] condition of low tire pressure warning
lamp.
SEAT BELT W/L [ON/OFF]
X
Indicates [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF]
X
X
Indicates [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF]
X
Indicates [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF]
X
Indicates [ON/OFF] condition of high beam indicator.
TURN IND [ON/OFF]
X
Indicates [ON/OFF] condition of turn indicator.
OIL W/L [ON/OFF]
X
Indicates [ON/OFF] condition of oil pressure warning lamp.
VDC IND [ON/OFF]
X
Indicates [ON/OFF] condition of VDC OFF indicator lamp.
ABS W/L [ON/OFF]
X
Indicates [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF]
X
Indicates [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF]
X
Indicates [ON/OFF] condition of brake warning lamp.
*1
M RANGE SW [OFF
*2
]
X
X
—
NM RANGE SW [OFF
*2
]
X
X
—
AT SFT UP SW [OFF
*2
]
X
X
—
AT SFT DWN SW [OFF
*2
]
X
X
—
BRAKE SW [ON/OFF]
X
Indicates [ON/OFF] condition of brake switch (stop lamp
switch).
AT-M IND [OFF
*2
]
X
X
—
DI-60
UNIFIED METER AND A/C AMP
Revision; 2004 April
2003 Murano
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
*1: Monitor keeps indicating “OFF” when brake warning lamp is on by the parking brake operation or low brake
fluid level.
*2: These items are always shown as “OFF” because of “No Manual Mode”.
*3: This item is always shown as “1” because of “No Manual Mode”.
Removal and Installation of Unified Meter and A/C Amp.
AKS005F8
REMOVAL
1.
Remove the audio unit. Refer to
2.
Remove the fixing screws, then remove the unified meter and A/
C amp.
INSTALLATION
Installation is basically in the reverse order of removal.
AT-M GEAR [1
*3
]
X
X
—
P RANGE IND [ON/OFF]
X
X
Indicates [ON/OFF] condition of CVT shift P range indicator.
R RANGE IND [ON/OFF]
X
X
Indicates [ON/OFF] condition of CVT shift R range indicator.
N RANGE IND [ON/OFF]
X
X
Indicates [ON/OFF] condition of CVT shift N range indicator.
D RANGE IND [ON/OFF]
X
X
Indicates [ON/OFF] condition of CVT shift D range indicator.
L RANGE IND [ON/OFF]
X
X
Indicates [ON/OFF] condition of CVT shift L range indicator.
CVT IND [ON/OFF]
X
Indicates [ON/OFF] condition of CVT indicator.
S RANGE IND [ON/OFF]
X
X
Indicates [ON/OFF] condition of CVT shift S range indicator.
CRUISE IND [ON/OFF]
X
Indicates [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF]
X
Indicates [ON/OFF] condition of SET indicator.
4WD LOCK SW [ON/OFF]
X
Indicates [ON/OFF] condition of AWD lock switch.
4WD LOCK IND [ON/OFF]
X
Indicates [ON/OFF] condition of AWD lock indicator lamp.
4WD W/L [ON/OFF]
X
Indicates [ON/OFF] condition of AWD warning lamp.
Display item [Unit]
MAIN SIGNALS
SELECTION
FROM MENU
Contents
RJIA1813E
WARNING LAMPS
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WARNING LAMPS
PFP:24814
Schematic
AKS004GS
TKWA0817E
DI-62
WARNING LAMPS
Revision; 2004 April
2003 Murano
Wiring Diagram — WARN —
AKS004GT
TKWA0818E
WARNING LAMPS
DI-63
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Revision; 2004 April
2003 Murano
TKWA0819E
DI-64
WARNING LAMPS
Revision; 2004 April
2003 Murano
TKWA0820E
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