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K ELECTRICAL
A
DRIVER INFORMATION SYSTEM
SECTION DI B
C
D
E
CONTENTS
PRECAUTION ........................................................... 3 . Engine Speed Signal Inspection ............................ 20 . F
Precautions for Supplemental Restraint System Water Temperature Signal Inspection ................... 20 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Fuel Level Sensor Signal Inspection ..................... 21 .
SIONER" ................................................................. 3
. Fuel Gauge Fluctuates, Indicates Wrong Value, or G
PREPARATION .......................................................... 4 . Varies ..................................................................... 23
.
Commercial Service Tool ........................................ 4 . Fuel Gauge Does Not Move to Full position .......... 23 .
COMBINATION METERS .......................................... 5 . DTC [U1000] CAN Communication Circuit ............ 23 .
H
Component Parts and Harness Connector Location 5 ..... Electrical Components Inspection ......................... 24 .
System Description ................................................. 5 . FUEL LEVEL SENSOR UNIT CHECK ............... 24 .
UNIFIED METER CONTROL UNIT ..................... 5 . Removal and Installation ....................................... 24 .
POWER SUPPLY AND GROUND CIRCUIT ....... 5 . COMBINATION METER ..................................... 24 . I
SPEEDOMETER .................................................. 6 . DOUBLE METERS .................................................. 25 .
TACHOMETER .................................................... 6 . System Description ................................................ 25 .
FUEL GAUGE ...................................................... 6 . DOUBLE METER ............................................... 25 . J
WATER TEMPERATURE GAUGE ....................... 7 . POWER SUPPLY AND GROUND CIRCUIT ...... 25 .
WATER TEMPERATURE GAUGE ....................... 7 . OIL PRESSURE GAUGE ................................... 25 .
CAN COMMUNICATION SYSTEM DESCRIP- G-FORCE GAUGE ............................................. 25 .
DI
TION ..................................................................... 7
. Wiring Diagram -- 2METER -- ............................. 26 .
Arrangement of Combination Meter ........................ 8 . Terminals and Reference Values for Double Meter 28 ...
Internal Circuit ......................................................... 9
. Terminals and Reference Values for Combination
Wiring Diagram -- METER -- ............................... 10 . Meter ..................................................................... 28
. L
Combination Meter Harness Connector Terminal CONSULT-III Function (METER/M&A) .................. 28 .
Layout ................................................................... 12
. Trouble Diagnosis .................................................. 29 .
Terminals and Reference Values for Combination HOW TO PERFORM TROUBLE DIAGNOSIS ... 29 M
Meter ..................................................................... 12
. PRELIMINARY CHECK ...................................... 29 .
Self-Diagnosis Mode of Combination Meter .......... 14 . Symptom Chart ...................................................... 29 .
SELF-DIAGNOSIS MODE FUNCTION .............. 14 . Power Supply and Ground Circuit Check .............. 30 .
OPERATION PROCEDURE .............................. 14 . Oil Pressure Sensor Inspection ............................. 31 .
CONSULT-III Function (METER/M&A) .................. 15 . Removal and Installation ....................................... 33 .
SELF-DIAGNOSTIC RESULTS ......................... 15 . COMPONENTS .................................................. 33 .
DATA MONITOR ................................................ 15 . WARNING LAMPS ................................................... 35 .
Trouble Diagnosis ................................................. 17 . Schematic .............................................................. 35
.
HOW TO PERFORM TROUBLE DIAGNOSIS ... 17 Wiring Diagram -- WARN -- ................................. 36 .
PRELIMINARY CHECK ..................................... 17 . Oil Pressure Warning Lamp Stays Off (Ignition
Symptom Chart ..................................................... 17 . Switch ON) ............................................................ 44
.
Power Supply and Ground Circuit Inspection ....... 18 . Oil Pressure Warning Lamp Does Not Turn Off (Oil
Vehicle Speed Signal Inspection ........................... 19 . Pressure Is Normal) ............................................... 45 .
WITH ABS .......................................................... 19. Component Inspection ........................................... 46 .
WITHOUT ABS OR CVT .................................... 19 . OIL PRESSURE SWITCH .................................. 46 .
WITH CVT, WITHOUT ABS ............................... 20 . CVT INDICATOR ...................................................... 47 .
Revision: December 2006 DI-1 2007 Sentra
System Description ................................................ 47
. SELF-DIAG RESULTS ........................................57 .
Wiring Diagram -- CVTIND -- .............................. 48 . Trouble Diagnosis ..................................................58 .
CVT Indicator Does Not Illuminate ........................ 50 . HOW TO PERFORM TROUBLE DIAGNOSIS ...58
WARNING CHIME .................................................... 51
. PRELIMINARY INSPECTION .............................58 .
Component Parts and Harness Connector Location 51 ... SYMPTOM CHART .............................................58 .
System Description ................................................ 52
. Combination Meter Buzzer Circuit Inspection ........59 .
POWER SUPPLY AND GROUND CIRCUIT ...... 52 . Front Door Switch LH Signal Inspection ................59 .
IGNITION KEY WARNING CHIME (WITHOUT Key Switch Signal Inspection (Without Intelligent
INTELLIGENT KEY) ........................................... 52
. Key) ........................................................................60
.
IGNITION KEY WARNING CHIME (WITH INTEL- Key Switch and Ignition Knob Switch Signal Inspec-
LIGENT KEY) ..................................................... 53
. tion (With Intelligent Key, When Mechanical Key Is
LIGHT WARNING CHIME .................................. 53 . Used) .....................................................................62
.
SEAT BELT WARNING CHIME .......................... 53 . Lighting Switch Signal Inspection ..........................64 .
PARKING BRAKE WARNING CHIME ................ 54 . Lighting Switch Signal Inspection ..........................64 .
Wiring Diagram -- CHIME -- ................................ 55 . Parking Brake Switch Signal Inspection ................66 .
Terminals and Reference Values for BCM ............. 57 . Electrical Component Inspection ...........................67 .
CONSULT-III Function (BCM) ................................ 57 . FRONT DOOR SWITCH LH ...............................67 .
DATA MONITOR ................................................. 57
. FRONT DOOR SWITCH LH ...............................67 .
ACTIVE TEST .................................................... 57
. PARKING BRAKE SWITCH ................................67 .
Revision: December 2006 DI-2 2007 Sentra
PRECAUTION
PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00JPU
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
G 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
G 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
G 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
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DI
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Revision: December 2006 DI-3 2007 Sentra
PREPARATION
PREPARATION PFP:00002
Commercial Service Tool EKS00JPV
Tool name Description
Power tool Loosening bolts and nuts
PBIC0191E
Revision: December 2006 DI-4 2007 Sentra
COMBINATION METERS
COMBINATION METERS PFP:24814
A
Component Parts and Harness Connector Location EKS00JPW
B
C
D
E
F
G
H
I
LKIA0868E
1. Combination meter M24 2. ECM E16 3. Fuel level sensor unit and fuel pump J
(fuel level sensor) B48 (view with
rear seat and inspection hole cover
removed)
(: Front) DI
4. Vehicle speed sensor F41 (without 5. TCM F23 6. ABS actuator and electric unit (con-
ABS or CVT) trol unit) E33
L
System Description EKS00JPX
UNIFIED METER CONTROL UNIT
G Speedometer, odo/trip meter, tachometer, water temperature gauge and fuel gauge are controlled by the
M
unified meter control unit, which is built into the combination meter.
G Warning and indicator lamps are controlled by signals drawn from the CAN communication system, BCM
(body control module), and components connected directly to the combination meter.
G Odo/trip meter and CVT indicator segments can be checked in self-diagnosis mode.
G Meters/gauges can be checked in self-diagnosis mode.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
G through 10A fuse [No. 19, located in the fuse block (J/B)]
G to combination meter terminal 1.
With the ignition switch in the ON or START position, power is supplied
G through 10A fuse [No. 14, located in the fuse block (J/B)]
G to combination meter terminal 2.
With the ignition switch in the ACC or ON position, power is supplied
G through 10A fuse [No. 5, located in the fuse block (J/B)]
G to combination meter terminal 23 (with QR25DE).
Revision: December 2006 DI-5 2007 Sentra
COMBINATION METERS
Ground is supplied
G to combination meter terminals 3, 21 and 22
G through grounds M57 and M61.
SPEEDOMETER
With ABS
The ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via
CAN communication lines.
WKIA5370E
Without ABS or CVT
The vehicle speed sensor provides a vehicle speed signal to the combination meter for speedometer indica-
tion.
With CVT, Without ABS
The TCM provides a vehicle speed signal to the combination meter via CAN communication lines.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm). The ECM provides an engine speed
signal to combination meter via CAN communication lines.
SKIB6904E
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by the unified meter control unit and a variable resistor signal supplied
G to combination meter terminal 4
G through fuel level sensor unit and fuel pump terminal 5
G through fuel level sensor unit and fuel pump terminal 2
G from combination meter terminal 8.
Revision: December 2006 DI-6 2007 Sentra
COMBINATION METERS
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature. A
The ECM provides an engine coolant temperature signal to the combination meter via CAN communication
lines.
B
C
D
SKIB6905E E
ODO/TRIP METER
The vehicle speed signal and the memory signals from the meter memory circuit are processed by the combi-
nation meter and the mileage is displayed. F
How to Change the Display
Refer to Owner's Manual for odo/trip meter operating instructions. G
CAN COMMUNICATION SYSTEM DESCRIPTION
Refer to LAN-4, "SYSTEM DESCRIPTION" .
H
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Revision: December 2006 DI-7 2007 Sentra
COMBINATION METERS
Arrangement of Combination Meter EKS00JPY
WKIA5975E
Revision: December 2006 DI-8 2007 Sentra
COMBINATION METERS
Internal Circuit EKS00JPZ
A
B
C
D
E
F
G
H
I
J
DI
L
M
WKWA5758E
Revision: December 2006 DI-9 2007 Sentra
COMBINATION METERS
Wiring Diagram -- METER -- EKS00JQ0
WKWA5759E
Revision: December 2006 DI-10 2007 Sentra
COMBINATION METERS
A
B
C
D
E
F
G
H
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DI
L
M
WKWA5417E
Revision: December 2006 DI-11 2007 Sentra
COMBINATION METERS
Combination Meter Harness Connector Terminal Layout EKS00JQ1
WKIA5832E
Terminals and Reference Values for Combination Meter EKS00JQ2
Ter- Condition
Wire Reference value (V)
minal Item Ignition
color Operation or condition (Approx.)
No. switch
1 W Battery power supply OFF -- Battery voltage
2 P Ignition switch ON or START ON -- Battery voltage
3 B Ground (power) -- -- 0
4 B Fuel level sensor ground (-) ON -- 0
Vehicle speed sensor ground
6 B ON -- 0
(without ABS or CVT)
Speedometer operated
Vehicle speed signal (without
7 GR ON [When vehicle speed is approx. 240 Hz
ABS or CVT)
20 km/h (12 MPH)]
Refer to DI-24, "FUEL LEVEL SENSOR
8 LG Fuel level sensor signal (+) -- --
UNIT CHECK" .
9 L CAN-H -- -- --
10 P CAN-L -- -- --
Illumination control switch Refer to LT-102, "ILLUMINATION
13 V -- --
(LED) OPERATION BY LIGHTING SWITCH" .
Illumination control switch Refer to LT-102, "ILLUMINATION
14 GR -- --
(lamp) OPERATION BY LIGHTING SWITCH" .
Immobilizer/security indica- Security indicator ON 0
16 SB OFF
tor input Security indicator OFF Battery voltage
Unfastened (ON) 0
18 G Seat belt buckle switch RH ON
Fastened (OFF) Battery voltage
21
B Ground (illumination) -- -- 0
22
23* O Ignition switch ACC or ON ON -- Battery voltage
Parking brake applied 0
24 GR Parking Brake switch ON
Parking brake released Battery voltage
Brake fluid level low 0
25 V Brake fluid level switch ON
Brake fluid level normal Battery voltage
Unfastened (ON) 0
26 O Seat belt buckle switch LH ON
Fastened (OFF) Battery voltage
Washer fluid level switch Washer fluid level low 0
28 R ON
(Canada models) Washer fluid level normal Battery voltage
O/D OFF switch pressed 0
29 W O/D OFF switch ON
O/D OFF switch released Battery voltage
Revision: December 2006 DI-12 2007 Sentra
COMBINATION METERS
Ter- Condition
Wire Reference value (V) A
minal Item Ignition
color Operation or condition (Approx.)
No. switch
NOTE:
Maximum voltage may be 12 V due to B
specifications (connected units).
Speedometer operated C
Vehicle speed signal output
31 O ON [When vehicle speed is approx.
(8-pulse)
40 km/h (25 MPH)]
D
PKIC0643E
Generator voltage low 0 E
32 BR Generator ON
Generator voltage normal Battery voltage
Illumination output to double Refer to LT-102, "ILLUMINATION
33* V -- --
meter OPERATION BY LIGHTING SWITCH" . F
*: With QR25DE
G
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Revision: December 2006 DI-13 2007 Sentra
COMBINATION METERS
Self-Diagnosis Mode of Combination Meter EKS00JQ3
SELF-DIAGNOSIS MODE FUNCTION
G Self-diagnosis can check for continuity between the meter control circuit and the speedometer and
tachometer.
G Self-diagnosis can check for odo/trip meter and CVT indicator segments.
OPERATION PROCEDURE
1. Turn the ignition switch ON, and switch the odo/trip meter to "trip A" or "trip B".
NOTE:
If the diagnosis function is activated with "trip A" displayed, the mileage on "trip A" will indicate "0000.0",
but the actual trip mileage will be retained. (The same applies for "trip B".)
2. Turn ignition switch OFF.
3. While pushing the odo/trip meter switch (1), turn the ignition
switch ON.
4. Confirm that 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.)
LKIA0870E
6. All segments on the odo/trip meter illuminate. At this time, the
unified meter control unit is turned to self-diagnosis mode.
NOTE:
G Check combination meter power supply and ground circuit
when self-diagnosis mode of combination meter does not
start. Replace combination meter if normal. Refer to IP-15,
"COMBINATION METER" .
G If any of the segments is not displayed, replace combination
meter. Refer to IP-15, "COMBINATION METER" .
LKIA0871E
7. Each meter activates while pressing odo/trip meter switch.
LKIA0872E
NOTE:
If the speedometer or tachometer are not activated, replace combination meter. Refer to IP-15, "COMBI-
NATION METER" .
Revision: December 2006 DI-14 2007 Sentra
COMBINATION METERS
CONSULT-III Function (METER/M&A) EKS00JQ4
A
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
METER diagnosis mode Description
SELF-DIAG RESULTS Displays combination meter self-diagnosis results. B
DATA MONITOR Displays combination meter input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
C
SELF-DIAGNOSTIC RESULTS
Display Item List
D
CONSULT-III display Malfunction Reference page
Malfunction is detected in CAN communication lines.
CAUTION: E
CAN COMM CIRC [U1000] Even when there is no malfunction on CAN communication system, mal- DI-23
function may be misinterpreted when battery has low voltage (when
maintaining 7 - 8 V for about 2 seconds) or 10A fuse [No. 14, located in
the fuse block (J/B)] is removed. F
Malfunction is detected when an erroneous speed signal is input.
CAUTION:
VEHICLE SPEED CIRC [B2205] Even when there is no malfunction on speed signal system, malfunctions DI-19 G
may be misinterpreted when battery has low voltage (when maintaining 7
- 8 V for about 2 seconds).
NOTE: H
"TIME" indicates the following.
G 0: Indicates that a malfunction is detected at present.
G 1-63: Indicates that a malfunction was detected in the past. (Displays number of ignition switch OFF I
ON cycles after malfunction is detected. Self-diagnostic result is erased when "63" is exceeded.)
DATA MONITOR
J
Display Item List
MAIN SELECTION
Display item [Unit] Contents
SIGNALS FROM MENU
DI
The value of vehicle speed signal, which is input from ABS
SPEED METER [km/h] X X
actuator and electric unit (control unit).
The value of vehicle speed signal, which is transmitted to each
SPEED OUTPUT [km/h] X X L
unit with CAN communication.
TACHO METER [rpm] X X The value of engine speed signal, which is input from ECM.
The value of engine coolant temperature signal, which is input M
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