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DRIVER INFORMATION SYSTEM
K ELECTRICAL
A
DRIVER INFORMATION SYSTEM
SECTION DI B
C
D
E
CONTENTS
PRECAUTION ........................................................... 3 . LOW-FUEL WARNING LAMP ............................ 24 . F
Precautions for Supplemental Restraint System CAN Communication System Inspection ............... 24 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Communication Line Inspection ............................ 24 .
SIONER" ................................................................. 3
. Odo/Trip Meter and Illumination Control Switch G
Wiring Diagrams and Trouble Diagnosis ................. 3 . Inspection .............................................................. 27
.
COMBINATION METERS .......................................... 4 . Fuel Gauge Pointer Fluctuates, Indicator Wrong
System Description ................................................. 4 . Value or Varies ...................................................... 28
.
H
UNIFIED METER CONTROL UNIT ..................... 4 . Fuel Gauge Does Not Move to Full-position .......... 28 .
UNIFIED METER AND A/C AMP. ........................ 4 . Electrical Components Inspection ......................... 29 .
HOW TO CHANGE THE DISPLAY FOR ODO/ FUEL LEVEL SENSOR UNIT CHECK ............... 29 .
TRIP METER ....................................................... 5 . Removal and Installation of Combination Meter .... 29 . I
POWER SUPPLY AND GROUND CIRCUIT ....... 6 . REMOVAL .......................................................... 29 .
WATER TEMPERATURE GAUGE ....................... 6 . INSTALLATION .................................................. 29 .
TACHOMETER .................................................... 6 . Disassembly and Assembly of Combination Meter 30 ... J
FUEL GAUGE ...................................................... 6 . DISASSEMBLY .................................................. 30 .
SPEEDOMETER .................................................. 6 . ASSEMBLY ........................................................ 31 .
Component Parts and Harness Connector Location 7 ..... UNIFIED METER AND A/C AMP ............................. 32 .
DI
Combination Meter .................................................. 8 . System Description ................................................ 32 .
CHECK ................................................................. 8
. INPUT/OUTPUT SIGNALS ................................ 32 .
Circuit Diagram ....................................................... 9
. FAIL-SAFE ......................................................... 33.
Wiring Diagram -- METER -- ............................... 10 . CAN Communication System Description ............. 34 . L
Terminals and Reference Value for Combination CAN Communication Unit For 2WD Models .......... 34 .
Meter ..................................................................... 12
. TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE
Terminals and Reference Value for Unified Meter 6/TYPE 7/TYPE 8 ............................................... 35 . M
and A/C Amp. ........................................................ 13. TYPE 9/TYPE10/TYPE 11/TYPE 12/TYPE 13/
Meter/Gauge Operation and Odo/Trip Meter ........ 14 . TYPE 14/TYPE 15/TYPE 16 .............................. 40 .
SELF-DIAGNOSIS FUNCTION ......................... 14 . CAN Communication Unit For AWD Models ......... 45 .
HOW TO ALTERNATE DIAGNOSIS MODE ...... 14 . TYPE 17/TYPE 18/TYPE 19/TYPE 20/TYPE 21/
CONSULT-II Function ........................................... 14 . TYPE 22/TYPE 23/TYPE 24 .............................. 45 .
How to Proceed With Trouble Diagnosis ............... 15 . TYPE 25/TYPE26/TYPE 27/TYPE 28/TYPE 29/
Diagnosis Flow ...................................................... 15. TYPE 30/TYPE 31/TYPE 32 .............................. 51 .
Power Supply and Ground Circuit Inspection ....... 16 . Schematic .............................................................. 56
.
Symptom Chart 1 .................................................. 18 . CONSULT-II Function ............................................ 57 .
Symptom Chart 2 .................................................. 18 . CONSULT-II BASIC OPERATION ...................... 57 .
Vehicle Speed Signal Inspection ........................... 19 . SELF-DIAGNOSTIC RESULTS .......................... 58 .
Engine Speed Signal Inspection ........................... 21 . DATA MONITOR ................................................ 58 .
Water Temperature Signal Inspection ................... 22 . Removal and Installation of Unified Meter and A/C
Fuel Level Sensor Signal Inspection 1 .................. 23 . Amp. ...................................................................... 60
.
FUEL GAUGE .................................................... 23 . REMOVAL .......................................................... 60 .
Fuel Level Sensor Signal Inspection 2 .................. 24 . INSTALLATION .................................................. 60 .
Revision; 2004 April DI-1 2003 Murano
WARNING LAMPS ................................................... 61 . TYPE 22/TYPE 23/TYPE 24 ...............................89 .
Schematic .............................................................. 61
. TYPE 25/TYPE26/TYPE 27/TYPE 28/TYPE 29/
Wiring Diagram -- WARN -- ................................. 62 . TYPE 30/TYPE 31/TYPE 32 ...............................95 .
Oil Pressure Warning Lamp Stays Off (Ignition Wiring Diagram -- CHIME -- .............................. 100 .
Switch ON) ............................................................ 69
. Terminals and Reference Value for BCM ............. 102 .
Oil Pressure Warning Lamp Does Not Turn Off (Oil Terminals and Reference Value for Unified Meter
Pressure Is Normal) ............................................... 70
. and A/C Amp. ....................................................... 102 .
Component Inspection ........................................... 71 . Terminals and Reference Value for Combination
OIL PRESSURE SWITCH .................................. 71 . Meter .................................................................... 103
.
CVT INDICATOR ...................................................... 72
. How to Proceed With Trouble Diagnosis ............. 103 .
Wiring Diagram -- CVTIND -- .............................. 72 . Preliminary Check ................................................ 104 .
CVT Indicator Does Not Illuminate ........................ 74 . INSPECTION FOR POWER SUPPLY AND
WARNING CHIME .................................................... 76 . GROUND CIRCUIT .......................................... 104 .
Component Parts and Harness Connector Location 76 ... CONSULT-II Function .......................................... 105 .
System Description ................................................ 76
. DIAGNOSTIC ITEMS DESCRIPTION .............. 105 .
FUNCTION ......................................................... 76
. CONSULT-II BASIC OPERATION PROCEDURE
IGNITION KEY WARNING CHIME ..................... 77 . .105
LIGHT WARNING CHIME .................................. 77 . DATA MONITOR ............................................... 106 .
SEAT BELT WARNING CHIME .......................... 77 . ACTIVE TEST ................................................... 106 .
CAN Communication System Description ............. 78 . SELF-DIAGNOSTIC RESULTS ........................ 107 .
CAN Communication Unit For 2WD Models .......... 78 . All Warnings Are Not Operated ............................ 107 .
TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE Key Warning Chime and Light Warning Chime Does
6/TYPE 7/TYPE 8 ............................................... 79 . Not Operate (Seat belt Warning Chime Does Oper-
TYPE 9/TYPE10/TYPE 11/TYPE 12/TYPE 13/ ate) ....................................................................... 108
.
TYPE 14/TYPE 15/TYPE 16 .............................. 84 . Key Warning Chime Does Not Operate ............... 109 .
CAN Communication Unit For AWD Models ......... 89 . Light Warning Chime Does Not Operate .............. 111 .
TYPE 17/TYPE 18/TYPE 19/TYPE 20/TYPE 21/ Seat Belt Warning Chime Does Not Operate ....... 112 .
Revision; 2004 April DI-2 2003 Murano
PRECAUTION
PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS004FR
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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: D
q 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. E
q 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. F
q 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.
G
Wiring Diagrams and Trouble Diagnosis AKS004FT
When you read wiring diagrams, refer to the following:
H
q Refer to GI-14, "How to Read Wiring Diagrams" .
q Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.
When you perform trouble diagnosis, refer to the following: I
q Refer to GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" .
q Refer to GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" .
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Revision; 2004 April DI-3 2003 Murano
COMBINATION METERS
COMBINATION METERS PFP:24814
System Description AKS004FU
UNIFIED METER CONTROL UNIT
q 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.
q Warning lamp and indicator lamp of combination meter are controlled by signals drawn from the unified
meter and A/C amp.
q Digital meter is adopted for odo/trip meter.*
*The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.
q Odo/trip meter and CVT indicator segments can be checked in diagnosis mode.
q Meters/gauges can be checked in diagnosis mode.
Illumination Control
The unified meter control unit outputs the odo/trip meter and CVT
indicator lighting when the ignition switch is turned on. When the
lighting switch is turned on, light on for the combination meter dial,
odo/trip meter and illumination control switch and external lighting
are output. In addition, when the lighting switch is turned on, the illu-
mination control switch on the left side of the combination meter can
be used to adjust the brightness of each light. The brightness can be
adjusted to sixteen different levels: From 0 (no lights) to 15 (maxi-
mum). Pressing the illumination control switch will brighten or darken
the lights. When the key switch is in the START position, the combi-
nation meter dial lighting and illumination control switch lighting are
PKIA2478E
turned off.
UNIFIED METER AND A/C AMP.
Refer to DI-32, "System Description" in "UNIFIED METER AND A/C AMP".
Revision; 2004 April DI-4 2003 Murano
COMBINATION METERS
HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER
q The vehicle speed signal and the memory signals from the meter memory circuit are processed by the A
combination meter and the mileage is displayed.
q Depressing the odo/trip meter switch toggles the mode in the following order.
B
C
D
E
F
G
SEL175W
H
q 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.
I
q When resetting with trip A displayed, only trip A display is reset
(Trip B operates the same way).
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PKIA2480E
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Revision; 2004 April DI-5 2003 Murano
COMBINATION METERS
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
q through 10A fuse [No. 19, located in the fuse block (J/B)]
q to unified meter and A/C amp. terminal 21
q through 10A fuse [No. 21, located in the fuse block (J/B)]
q to combination meter terminal 21.
With the ignition switch in the ON or START position, power is supplied
q through 10A fuse [No. 14, located in the fuse block (J/B)]
q to combination meter terminal 20
q through 10A fuse [No. 12, located in the fuse block (J/B)]
q to unified meter and A/C amp. terminal 22.
With the ignition switch in the ON position, power is supplied
q through 15A fuse [No. 10, located in the fuse block (J/B)], and
q through 15A fuse [No. 11, located in the fuse block (J/B)]
q to unified meter and A/C amp. terminal 46.
Ground is supplied
q to combination meter terminals 22, 23 and 24, and
q to unified meter and A/C amp. terminals 29 and 30
q through body grounds M14 and M78.
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.
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.
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
q from unified meter and A/C amp. terminal 36
q through the fuel level sensor unit and fuel pump (main) terminals 5 and 7, and
q through the fuel level sensor unit (sub), and
q through the fuel level sensor unit and fuel pump (main) terminals 6 and 2
q 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.
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.
Revision; 2004 April DI-6 2003 Murano
COMBINATION METERS
Component Parts and Harness Connector Location AKS004FV
A
B
C
D
E
F
G
H
PKIA2477E I
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Revision; 2004 April DI-7 2003 Murano
COMBINATION METERS
Combination Meter AKS004FW
CHECK
PKIA2479E
Revision; 2004 April DI-8 2003 Murano
COMBINATION METERS
Circuit Diagram AKS004FX
A
B
C
D
E
F
G
H
I
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TKWA0814E
Revision; 2004 April DI-9 2003 Murano
COMBINATION METERS
Wiring Diagram -- METER -- AKS004FY
TKWA1157E
Revision; 2004 April DI-10 2003 Murano
COMBINATION METERS
A
B
C
D
E
F
G
H
I
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TKWA0816E
Revision; 2004 April DI-11 2003 Murano
COMBINATION METERS
Terminals and Reference Value for Combination Meter AKS004FZ
Measuring condition
Terminal Wire
Item Ignition Reference value (V)
No. color Operation or condition
switch
Speedometer operated
14 V/W Vehicle speed signal (8-pulse) ON [When vehicle speed is
approx. 40 km/h (25 MPH)]
PKIA1935E
When brightness level is midway.
Lighting switch ON, then
operate the illumination
15 R/W Illumination signal ON control switch.
SKIA5872E
Lighting switch OFF Approx. 0
TX communication line (To
18 R/L ON --
unified meter and A/C amp.)
SKIA3361E
RX communication line (From
19 R/B ON --
unified meter and A/C amp.)
SKIA3362E
20 O Ignition switch ON or START ON -- Battery voltage
21 Y/R Battery power supply OFF -- Battery voltage
22
23 B Ground ON -- Approx. 0
24
27 -- Illumination control switch (+) -- --
28 -- Illumination control switch ( ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo