Nissan Murano 2007 User Manual
DRIVER INFORMATION SYSTEM
K ELECTRICAL
A
B
SECTION
DRIVER INFORMATION SYSTEM
CONTENTS
PRECAUTION ............................................................ 3
Precautions for Supplemental Rest raint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
COMBINATION METERS ........................................... 4
System Description .................................................. 4
UNIFIED METER CONTROL UNIT ...................... 4
POWER SUPPLY AND GROUND CIRCUIT ........ 4
UNIFIED METER AND A/C AMP. ......................... 4
SPEEDOMETER ................................................... 5
TACHOMETER ..................................................... 5
WATER TEMPERATURE GAUGE ............... ......... 5
FUEL GAUGE ....................................................... 6
ODO/TRIP METER ..... ....... ...... ....... ...... ....... ......... 6
COMBINATION METER ILLUMINATION CON-
TROL .................................. ...... ............................. 7
FAIL-SAFE ............................................................ 7
Component Parts and Harness Connector Location ..... 8
Arrangement of Combination Meter ......................... 9
Schematic .............................................................. 10
Wiring Diagram — METER — .................................11
Terminals and Reference Value for Combination
Meter .............................. ........................................ 13
Terminals and Reference Value for Unified Meter
and A/C Amp. ......................................................... 14
Self-Diagnosis Mode of Combination Meter ........... 15
SELF-DIAGNOSIS FUNCTION .......................... 15
OPERATION PROCEDURE ............................... 15
CONSULT-II Function (METER A/C AMP) ............. 15
Trouble Diagnosis .................................................. 16
HOW TO PERFORM TROUBLE DIAGNOSIS ... 16
PRELIMINARY CHECK ...................................... 16
Symptom Chart ...................................................... 16
Power Supply and Ground Circuit Inspection ........ 17
Vehicle Speed Signal Inspection ............................ 18
Engine Speed Signal Inspection ............................ 19
Engine Coolant Temperature Signal Inspection ..... 20
Fuel Level Sensor Signal Inspection ...................... 20
Fuel Gauge Pointer Fluctuates, Indicator Wrong
Value or Varies ....................................................... 22
Fuel Gauge Does Not Move to FULL Position .......22
Odo/Trip Meter and Illumination Control Switch
Inspection ...............................................................23
Electrical Components Inspection ..........................23
ODO/TRIP METER AND ILLUMINAION CON-
TROL SWITCH ....................................................23
FUEL LEVEL SENSOR UNIT ............................. 23
Removal and Installation of Combination Meter .....24
REMOVAL ........................................................... 24
INSTALLATION ...................................................24
Disassembly and Assembly of Combination Meter ...24
DISASSEMBLY ................................................... 25
ASSEMBLY ......................................................... 26
UNIFIED METER AND A/C AMP ..............................27
System Description .................................................27
COMBINATION METER CONTROL FUNCTION ... 27
A/C AUTO AMP. FUNCTION ...............................28
OTHER FUNCTIONS ..........................................28
Schematic .................... ....................................... ....29
CONSULT- II Func tio n (METER A/C AMP ) .. ....... .... 30
CONSULT-II BASIC OPERATION .......................30
SELF-DIAG RESULTS ........................................30
DATA MONITOR .................................................31
Power Supply and Ground Circuit Inspection .........32
DTC [U1000] CAN Communication Circuit ............. 33
DTC [B2202] Meter Communication Circuit ........... 33
DTC [B2205] Vehicle Speed Circuit ........................36
Removal and Installation of Unified Meter and A/C
Amp. .......................................................................36
REMOVAL ........................................................... 36
INSTALLATION ...................................................36
WARNING LAMPS .................................................... 37
System Description .................................................37
OIL PRESSURE WARNING LAMP .....................37
Schematic .................... ....................................... ....38
Wiring Diagram — WARN — ..................................39
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) ............................................ ...... ...........47
Oil Pressure Warning Lamp Does Not Turn Off (Oil
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DI-1
Pressure Is Normal) ................................................48
Component Inspection ............................................49
OIL PRESSURE SWITCH ............... ...... ....... .......49
CVT INDICAT OR .......................................................50
System Description .................................................50
MANUAL MODE ..................................................50
NOT MANUAL MODE .........................................50
Wiring Diagram — CVTIND — ...............................51
CVT Indicator Is Malfunction ....... ....... ...... ....... .......55
WARNING CHIME .....................................................57
System Description .................................................57
POWER SUPPLY AND GROUND CIRCUIT .......57
IGNITION KEY WARNING CHIME (WITHOUT
INTELLIGENT KEY) ............................................58
IGNITION KEY WARNING CHIME (WITH INTEL-
LIGENT KEY) ......................................................58
LIGHT WARNING CHIME ..................... ....... .......59
SEAT BELT WARNING CHIME ...........................59
Component Parts and Harness Connector Location ...60
Schematic ................. ..............................................61
Wiring Diagram — CHIME — .................................62
Terminals and Reference Value for BCM ................65
Terminals and Reference Value for Unified Meter
and A/C Amp. .........................................................70
Terminals and Reference Value for Combination
Meter ......................................................................70
CONSULT-II Function (METER A/C AMP) .............71
CONSULT-II Function (BCM) ..................................71
DIAGNOSIS ITEMS DESCRIPTION ...................71
CONSULT-II BASIC OPERATION PROCEDURE
...71
DATA MONITOR ..................................................71
ACTIVE TEST .....................................................71
SELF-DIAG RESULTS .........................................72
Trouble Diagnosis ...................................................72
HOW TO PERFORM TROUBLE DIAGNOSIS ....72
PRELIMINARY INSPECTION ...... ........................72
Symptom Chart .......................................................72
Power Supply and Ground Circuit Inspection .........73
Combination Meter Buzzer Circuit Inspection .........74
Driver Side Door Switch Signal Inspection .............75
Key Switch Signal Inspection (Without Intelligent
Key) .............................. ............. ............. ............. ....76
Key Switch and Ignition Knob Switch Signal Inspection (With Intelligent Key, When Mechanical Key Is
Used) ......................................................................78
Lighting Switch Signal Inspection ...........................79
Seat Belt Buckle Switch (Driver Side) Signal Inspec-
tion ..........................................................................79
Component Inspection ............................................81
DRIVER SIDE DOOR SWITCH ...........................81
KEY SWITCH .......................................................81
KEY SWITCH AND IGNITION KNOB SWITCH ...81
SEAT BEL T BUCKLE SWITCH (DRIVER SIDE) ...81
CAN COMMUNICATION ...........................................82
System Description .................................................82
CAN Communication Unit .......................................82
COMPASS .................................................................83
Precautions for Compass ........................................83
System Description .................................................83
Troubleshooting ......................................................84
Zone Variation Setting Procedure ...........................85
Calibration Procedure .............................................85
Wiring Diagram – COMPASS – ..............................86
Removal and Installation of Compass .....................87
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DI-2
PRECAUTION
PRECAUTION PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
NKS001RY
A
The Supplemental Rest raint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used al ong
with a front seat belt, helps to redu ce th e risk or se verit y of i njury to the driv er and front passenge r for ce rtain
types of collision. This system includes seat belt switch inputs and dual st age 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 Manual.
WARNING:
● To avoid rendering the SRS inopera tive, whi ch could incr ease the risk of pe rsonal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.
● Improper maintenance, inc luding incorrect removal and installation of the SRS, can lead to per-
sonal injury ca use d by unintentional ac tiv atio n o f the s yst em . F or re moval of Spiral C ab le and A ir
Bag Module, see the SRS sec tion.
● Do not use electrical test equ ipment o n any circu it related to the SRS unless in structed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
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COMBINATION METERS
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 signals from uni fied 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 time s
● through 10A fuse [No. 19, located in the fuse block (J/B)]
● to unifie d 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 unifie d 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 unifie d 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”.
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DI-4
COMBINATION METERS
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.
A
B
C
D
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SKIB7332E
TACHOMETER
The tachometer indicates engine speed in revol uti on s pe r minu te (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.
PKIB7631E
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
● ECM provides engine coolant t emperature signal to unified meter and A/C amp. wi th CAN communica-
tion.
● Unified meter and A/C amp. transmits engin e coolan t temper ature sign al to combin ation mete r with com-
munication line.
● Combination meter indicates th e engine coolant temperature according to engine coolant temperature
signal.
F
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PKIB7632E
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DI-5
COMBINATION METERS
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 sens or 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 elec tric unit (control un it) pro vides a v ehicle s peed sign al to the unifie d meter and A/C
amp. with CAN communication.
● Unified meter and A/C amp. converts the vehi cle 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.
SEL175W
● The odo/trip meter disp lay mode togg ling and tr ip display rese t-
ting can be identified by the amount of time that elapses from
pressing the odo/trip meter switch (1) to rel easing 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 disconnected. The record of the trip meter is erased when the battery
cable is disconnected.
SKIB7553E
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DI-6
COMBINATION METERS
COMBINATION METER ILLUMINATION CONTROL
Daytime Mode
When ignition switch is turned ON, combination meter illumination is turned ON by unified meter control unit.
A
Nighttime Mode
● Unified meter contro l unit is transferred to nighttime mo de, with ignition switch turned ON and po sition
light request signal from BCM with CAN communication.
● When nighttime mode, illumination control switch (1) illumination
turns ON by unified meter contro l unit. Each illu mination is controlled by uni fied meter control unit.
● Each illumination can be adjusted to 16 step by illumination con-
trol switch (1) in nighttime mode.
2 : + (Bright)
3: – (Dark)
NOTE:
For further details of ill umin ation circui t, refe r to LT -22 5, "
TION" .
ILLUMINA-
SKIB7554E
FAIL-SAFE
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malunction.
Function Fail-safe operation
Speedometer
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.
Low tire pressure warning lamp The lamp turns ON after flashing for one minut e.
ABS warning lamp
VDC OFF indicator
SLIP indicator
Brake warning lamp
High beam indicator
Door warning lamp
Warning l a mp/indicator lamp
SET indicator lamp
CRUISE indicator lamp
AWD warning lamp
AWD LOCK indicator lamp
Oil pressure warning lamp
Turn signal indicator
Malfunction indicator lam p
CVT indicator lamp
Reset to zero.
The lamp turns ON.
The lamp turns OFF.
B
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DI-7
COMBINATION METERS
Component Parts and Harness Connector Location NKS001S1
SKIB7555E
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DI-8
COMBINATION METERS
Arrangement of Combination Meter NKS001S2
A
B
C
D
E
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SKIB7333E
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DI-9
COMBINATION METERS
Schematic NKS001S3
TKWB2600E
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DI-10
COMBINATION METERS
Wiring Diagram — METER — NKS001S4
A
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C
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TKWB0481E
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COMBINATION METERS
TKWB0902E
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DI-12
COMBINATION METERS
Terminals and Reference Value for Combination Meter NKS001S5
Terminal
No.
14 V/W
Wire
color
Item
Vehicle speed signal
(8-pulse)
Ignition
switch
Measuring condition
Operation or condition
Speedometer operated
ON
[When vehicle speed is
approx. 40 km/h (25 MPH)]
Reference value (V)
NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).
A
B
C
D
<e.g.> When brightness level is midway.
Lighting switch ON, then
15 R/W Illumination signal ON
TX communication line (To
18 R/L
19 R/B
20 O Ignition power supply ON — Battery voltage
21 Y/R Battery power supply OFF — Battery voltage
22
24
27
28
29 Odo/trip meter switch — —
30
unified meter and A/C
amp.)
RX communication line
(From unified meter and A/
C amp.)
B Ground ON — Approx. 023
Illumination control switch
(+)
Illumination control switch
(–)
—
Odo/trip meter and illumination control switch
ground
ON —
ON —
operate the illumination
control switch.
Lighting switch OFF Approx. 0
——
——
——
Refer to DI-23, "
mination Control Switch Inspect io n" .
Odo/Trip Meter and Illu-
PKIA1935E
SKIB8011E
SKIA3361E
SKIA3362E
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COMBINATION METERS
Terminals and Reference V alue for Unified Meter and A/C Amp. NKS001S6
Terminal
No.
1 L CAN H — — —
9R/B
11 Y CAN L — — —
19 R/L
21 Y/R Battery power supply OFF — Battery voltage
22 G Ignition power supply ON — Battery voltage
Wire
color
Item
TX communication line
(To combination meter)
RX communication line
(From combinati on mete r)
Ignition
Measuring condition
switch
ON —
ON —
Operation or condition
Reference value (V)
NOTE:
Maximum volta g e ma y be 5 V due to
specifications (connected units).
SKIA3362E
SKIA3361E
26 V/W
28 G/B Fuel level sens or signal — —
29
30 Ground ON — Approx. 0
36 B/W
46 W/L Ignition power supply ON — Battery voltage
Vehicle speed signal
(8-pulse)
Ground (For power) ON — Approx. 0
B
Fuel level sensor signal
ground
ON
ON — Approx. 0
Speedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]
Refer to DI-23, "
SOR UNIT" .
FUEL LEVEL SEN-
PKIA1935E
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DI-14
COMBINATION METERS
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 pushin g the od o/trip meter swi tch, turn igni tion swit ch ON
again.
4. Make sure the trip meter displays “0000.0”.
5. Push the o do /tr i p me ter s wit ch at l ea st 3 t imes ( wit h in 7 seco nd s
after the ignition switch is turned ON)
A
B
C
D
E
F
SKIB7553E
6. All the segments on the odo/trip meter and CVT indicator illuminate, and simultaneously the low-fuel
warning lamp ind icator illuminates. A t this time, the un ified meter control un it is turned to self-di agnosis
mode.
SKIA4428E
NOTE:
● Check odo/trip met er switch and combinat io n me te r pow e r sup pl y and ground circuit whe n se lf-d ia gn o-
sis mode of combina tion me ter dose not st art . Repl ace com bina tion met er if the res ult s of the check are
normal.
● If any of the segments are not displayed, replace combination me ter .
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.
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SKIB7556E
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”.
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DI-15
COMBINATION METERS
Trouble Diagnosis NKS001S9
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to DI-16, "
3. According to the symptom chart, repair or replace the cause of the symptom. Refer to DI-16, "
Chart" .
4. Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.
5. INSPECTION END
PRELIMINARY CHECK" .
Symptom
PRELIMINARY CHECK
1. CHECK OPERATION OF SELF-DIAGNOSIS MODE (COMBINATION METER)
Perform self-diagnosis mode of combination meter. Refer to DI-15, "
Does self
YES >> GO TO 2.
NO >> GO TO 3.
-diagnosis mod e operation normally?
OPERATION PROCEDURE" .
2. CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)
Perform self-diagnos is of unified meter and A/C amp. Refer to DI-30, "
AMP)" .
Self
-diagnosis results
No malfunction detected >> INSPECT ION END
Malfunction detected >> Check applicable parts, and repair or replace corresponding parts.
CONSULT-II Function (METER A/C
3. CHECK POWER SUPPLY AND GROUND CIRCUIT OF COMBINATION METER
Check battery power supply and ground circuit of combination meter. Refer to DI-17, "
Ground Circuit Insp ec ti on" .
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, "
Tachometer indication is malfunction. Refer to DI-19, "
Water temperature gauge indication is malfunction. Refer to DI-20, "
Fuel gauge indication is malfunction.
Low-fuel warning lamp indication is irregular.
CVT position indicator is malfunction. Refer to DI-55, "
Illumination control does not operate.
Refer to DI-20, "
Refer to DI-23, "
Inspection" .
Vehicle Speed Signal Inspection" .
Engine Speed Signal Inspection" .
Engine Coolant Temperature Signal Inspection" .
Fuel Level Sensor Signal Inspection" .
CVT Indicator Is Malfunction" .
Odo/Trip Meter and Illumination Control Switch
Power Supply and
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DI-16
COMBINATION METERS
Power Supply and Ground Circuit Inspection NKS002CH
1. CHECK FUSE
Check for blown combin ation meter fuses.
Power source Fuse No.
Battery power supply 21
Ignition power supply 14
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-3, "
SUPPLY ROUTING CIRCUIT" .
POWER
A
B
C
D
2. CHECK POWER SUPPLY CIRCUIT
Check voltage betwee n combination meter harne ss connector M25
terminals 20, 21 and ground.
Terminals Ignition switch position
(+)
Connector Terminal
M25
20
21 Battery voltage Battery voltage
(–) OFF ON
Ground
0 V Battery voltage
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.
22 – Ground
: Continuity should exist.23 – Ground
24 – Ground
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PKIB3970E
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OK or NG
OK >> INSPECTION END
PKIB3972E
NG >> Repair harness or connector.
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DI-17
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COMBINATION METERS
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 combination meter.
OK or NG
OK >> Perform self-diagnosis of ABS actuator and electric unit
(control unit). Refer t o BRC-64, "
(ABS)" (with VDC system) or BRC-20, "CONSULT- II
Functions (ABS)" (without VDC system).
NG >> GO TO 2.
CONSULT-II Functions
SKIB4578E
2. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Drive vehicle at approximately 40 km/h (25 MPH).
2. Check voltage sign al between u nified mete r and A/C amp. harness connec tor M50 termina l 26 and ground.
NOTE:
Maximum voltage may be
5 V due to specifications
(connected units).
26 – Ground:
SKIB0338E
PKIA1935E
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 unifi ed 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-36,
"Removal and Installation of Unified Meter and A/C Amp." .
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DI-18
COMBINATION METERS
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 and unified mete r and A/C amp. ha rness connector M50 termi nal 26.
14 – 26 : Continuity should exist.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.
PKIB3976E
Engine Speed Signal Inspection NKS002CJ
Symptom: Tachometer indication is malfunction.
1. CHECK COMBINAT ION METER INPUT SIGNAL
1. Connect CONSULT-II, and start engine.
2. Select “METER A/C AMP” on CONSULT-II.
3. Using “TACHO METER” on “DATA MONITOR”, compare the
value of “DATA MONI TOR” with tachometer po inter of com bination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
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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 CONSULT-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 >> Perf orm se lf-diagn osis of EC M. Refe r to EC-111 , "CON-
SULT-II Function (ENGINE)" .
NG >> Replace unified meter and A/C amp. Refer to DI-36,
"Removal and Installation of Unified Meter and A/C
Amp." .
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DI-19
COMBINATION METERS
Engine Coolant Temperature Signal Inspection NKS002CK
Symptom: Water temperature gauge in dication 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 “W TEMP METER” on “DATA MONITOR”, compare the
value of “DATA MONITOR” with water temperature gauge
pointer of combinat ion met er.
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)
OK or NG
OK >> GO TO 2.
PKIA2091E
NG >> Replace combination meter.
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “ENGINE” on CONSULT-II.
2. Using “COOLAN TEMP/S” on “DATA MONITOR”, print out the
CONSULT-II screen.
3. Select “METER A/C AMP” on CONSULT-II.
4. Using “W TEMP METER” on “DATA MONITOR”, compare the
value of data monitor with that of the “COOLAN TEMP/S”.
OK or NG
OK >> Perform self-diagnosis of ECM. Refer to E C- 111, "CON-
SULT-II Function (ENGINE)" .
NG >> Replace unified meter and A/C amp. Refer to DI-36,
"Removal and Installation of Unified Meter and A/C
Amp." .
SKIA4368E
Fuel Level Sensor Signal Inspection NKS002CL
Symptom:
● Fuel gauge indication is malfunction.
● Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms are not malfunction.
Fuel gauge
● Depending on vehicle position or driving circumstance, the fuel level in the tank various, and the pointer
may fluctuate.
● If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
Low-fuel warning lamp
● Depending on ve hi cl e po si ti on o r dr ivi ng c irc ums tance, the fu el i n th e t a nk f lo ws an d t he w a rni ng l amp ON
timing may change .
Revision: 2006 July 2007 Murano
DI-20
COMBINATION METERS
1. CHECK COMBINAT ION METER INPUT SIGNAL
1. Select “METER A/C AMP” on CONSULT-II.
2. Using “FUEL METER” on “DATA MONITOR”, comp are the va lue
of “DATA MONITOR” with fuel gauge pointer of combination
meter.
Fuel gauge pointer Reference value of data monitor [lit.]
Full Approx. 78
Three quarters Approx. 63
Half Approx. 43
A quarter Approx. 22
Empty Approx. 7
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2. CHECK FUEL LEVEL SENSOR (MAIN) CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect fu el level s ensor uni t and fuel pump (mai n) connec tor and unified meter and A/C amp. connector.
3. Check continuity between fuel level sensor unit and fuel pump
(main) harness c onnector B1 7 termin al 2 an d unifie d meter and
A/C amp. harness connector M50 terminal 28.
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PKIA2088E
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2 – 28 : Continuity should exist.
4. Check continuity between fuel level sensor unit and fuel pump
(main) harness connector B17 terminal 2 and ground.
2 – Ground : Continuity should not exist.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK FUEL LEVEL SENSOR (MAIN) CIRCUIT 2
1. Check continuity between fuel level sensor unit and fuel pump
(main) harness c onnector B1 7 termin al 5 an d unifie d meter and
A/C amp. harness connector M50 terminal 36.
5 – 36 : Continuity should exist.
2. Check continuity between fuel level sensor unit and fuel pump
(main) harness connector B17 terminal 5 and ground.
5 – Ground : Continuity should not exist.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
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DI-21
4. CHECK FUEL LEVEL SENSOR
COMBINATION METERS
Check components. Refer to DI-23, "
OK or NG
OK >> Che ck fuel lev el sensor unit installati on, and chec k whether th e float arm i nterferes or b inds with
any of the internal components in the fuel tank. Repair or replace malfunctioning part, if necessary.
NG >> Replace fuel level sensor unit.
FUEL LEVEL SENSOR UNIT" .
Fuel Gauge Pointer Fluctuates, Indicator Wrong Value or Varies NKS002CN
1. CHECK FUEL GAUGE FLUCTUATION
Test drive vehicle to see if gauge fluctuates only during driving or at the instant of stopping.
Does the indic ation value vary only during driv ing or at the instant of stopping?
YES >> The pointer fluctuation may be caused by fuel level change in the fuel tank. Condition is normal.
NO >> Ask the customer a bout th e situ ation when the symp tom oc curs in detail, an d perfo rm the tro uble
diagnosis.
Fuel Gauge Does Not Move to FULL Position NKS002 CO
1. QUESTION 1
Does it take a long time for the pointer to move to FULL position?
YES >> GO TO 2.
NO >> GO TO 3.
2. QUESTION 2
Was the vehicle fueled with the ignition switch ON?
YES >> Be sure to fuel th e v eh ic le wi th th e i gniti on sw it ch OF F. Otherwise, it will take a long time to move
to FULL position because of th e characteristic of the fuel ga uge.
NO >> GO TO 3.
3. QUESTION 3
Is the vehicle parked on an incline?
YES >> Check the fuel level indication with vehicle on a level surface.
NO >> GO TO 4.
4. QUESTION 4
During driving, does the fuel gauge pointer move gradually toward EMPTY position?
YES >> Check the fuel level sensor unit. Refer to DI-23, "FUEL LEVEL SENSOR UNIT" .
NO >> The float arm may interfe re or bind with any of the components in the fuel tank.
Revision: 2006 July 2007 Murano
DI-22
COMBINATION METERS
Odo/Trip Meter and Illumination Control Switch Inspection NKS002CM
Symptom: Illumination control does not operate.
1. CHECK ODO/TRIP METER AND ILLUMINATION CONTROL SWITCH
1. Remove combination meter. Refer to DI-24, "
2. Remove meter lid. Refer to DI-24, "
Disassembly and Assembly of Combination Meter" .
3. Check odo/trip m eter and illumin ation control swit ch. Refer to DI-23, "
NAION CONTROL SWITCH" .
OK or NG
OK >> Check harness bet ween combination meter and odo /trip meter and illumination control switch.
Replace combination meter if the results of the check are normal.
NG >> Replace odo/trip meter and illumination con trol switch.
Removal and Installatio n of Combination Meter" .
ODO/TRIP METER AND ILLUMI-
A
B
C
D
Electrical Components Inspection NKS002CP
ODO/TRIP METER AND ILLUMINAION CONTROL SWITCH
Check continuity between terminals 3, 4 or 5 and 6.
Terminal Condition Continuity
3
4
5
FUEL LEVEL SENSOR UNIT
For removal, refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
Fuel Level Sensor Unit and Fu el Pump (Main)
Check resistance between fuel level sensor unit and fuel pump
(main) connector terminals 2 and 6.
Terminal Float position [mm (in)] Resistance value [Ω]
26
*1 and *2: When float rod is in contact with stopper.
Illumination control switch (+) is pressed. Yes
Illumination control switch (+) is released . No
Illumination control switch (–) is pressed. Yes
6
Illumination control switch (–) is released . No
Odo/trip meter switch is pressed. Yes
Odo/trip meter switch is released. No
*1 Empty 15 (0.59) Approx. 81.5
*2 Full 193 (7.6) Approx. 2.5
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Fuel Level Sensor Unit and Pump (Main) Harness
Check continuity between fuel level sensor unit and fuel pump
(main) connector terminals 5 and 7.
5 – 7 : Continuity should exist.
PKIA2596E
Revision: 2006 July 2007 Murano
DI-23
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COMBINATION METERS
Fuel Level Sensor Unit (Sub)
Check resistance between fuel level sensor unit and fuel pump
(main) connector terminals 6 and 7.
Terminal Float position [mm (in)] Resistance value [Ω]
67
*1 and *2: When float rod is in contact with stopper.
*1 Empty 10 (0.39) Approx. 45.2
*2 Full 198 (7.8) Approx. 2.5
PKIB6088E
Removal and Installation of Combination Meter NKS002CQ
REMOVAL
1. Remove instrument driver lower panel. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove steering column cover. Refer to IP-10, "
3. Remove bolts (2) and remove combination meter.
INSTRUMENT PANEL ASSEMBLY" .
PKIB7435E
INSTALLATION
Installat ion is the rever se order of removal.
Disassembly and Assembly of Combination Meter NKS002CR
SKIB7557E
1. Switch cover (Left side) 2. Screws 3. Unified meter control unit assembly
4. Screws 5. Odo/trip meter and illumination control switch
7. Hazard switch 8. Screws 9. Bracket
10. Switch cover (Right side) 11. Screws 12. Rear cover
Revision: 2006 July 2007 Murano
DI-24
6. Meter lid
DISASSEMBLY
1. Remove screws (A).
COMBINATION METERS
A
B
C
2. Disengaged the tabs (A) and remove meter lid.
3. Disconnect odo/trip meter and illumination control switch and
hazard switch connectors.
4. Remove screws (A) and remove odo/trip m eter and ill umination
control switch.
SKIB7558E
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5. Disengaged the tabs (A) and remove hazard switch (1).
SKIB7561E
Revision: 2006 July 2007 Murano
DI-25
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COMBINATION METERS
6. Remove scr ews (A) and remove switch cover.
7. Remove screws (A) and remove rear cover.
SKIB7562E
8. Disengaged the tab s (A) to separ ate bracket.
ASSEMBLY
Assembly is the reverse order of disassembly.
SKIB7563E
SKIB7564E
Revision: 2006 July 2007 Murano
DI-26
UNIFIED METER AND A/C AMP
UNIFIED METER AND A/C AMP PFP:27760
System Description NKS001SN
● For the unified meter and A/C amp., the signal required for controlling the combination meter are inte-
grated in the A/C auto amp.
● The unified mete r an d A/ C amp . c orr e spond s t o a CON SULT-II function (sel f- di ag nosi s r esul ts, CAN diag-
nosis support monitor, data monit or).
COMBINATION METER CONTROL FUNCTION
● Unified meter an d A /C am p. r ec eiv es nece ss ar y in fo r mati on f or co mb inat i on mete r fro m ea ch un it b y C AN
communication.
● Unified meter and A/C amp. transmits a s ignals wit h communi cation l ine (TX, RX) b etween un ified met er
and A/C amp. and combination meter.
A
B
C
D
Input/output signals between unified meter and A/C amp. and combination meter.
Unit Input Output
● Vehicle speed signal (8-pulse)
● Engine speed signal
● Engine coolant temperature signal
● Fuel level sensor signal (resistance value)
● Malfunct i on i ndicat or sign al
● ABS warning lamp signal
● Low tire pressure warning signal
● Brake wa rning lam p si gnal
● AWD warning lamp signal
● Seat belt buckle swit ch si gnal (Dr iver' s si de)
● Parking brake signal
● Illumination control nighttime required signal
Unified meter and A/C amp.
● Refuel status signal
● Low-fuel warning lamp condition signal
● Combination m et er r eceive error signal
● Delivery destinat i on data signal
● Combination m et er sp eci fica tions signal
NOTE:
Combination meter performs fai l-safe operation when uni fied meter and A/C amp. communication i s malfunction. Refer to DI-7, "
SAFE" .
● Turn indicator signal
● High beam request signal
● VDC OFF indi cator lam p si gnal
● SLIP indicat or lamp signal
● CRUISE indicator lamp signal
● SET indicator lamp signal
● AWD lock indicator lamp signal
● CVT indicator lamp signal
● CVT position indicator signal
● Manual mod e ind ic ato r signal
● Manual mode gear position signal
● Second position indicator signal
● CAN communication condition signal of CVT
● Door swi tc h signal
● Oil pressure switch signal
● Position lights request signal
● Buzzer out put signal
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Revision: 2006 July 2007 Murano
DI-27
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