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K ELECTRICAL

B
SECTION
DRIVER INFORMATION SYSTEM C

E
CONTENTS
PRECAUTION ........................................................... 3 . Fuel Gauge Fluctuates, Indicates Wrong Value, or F
Precautions for Supplemental Restraint System Varies ..................................................................... 20
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Fuel Gauge Does Not Move to Full-position .......... 20 .
SIONER" ................................................................. 3
. Electrical Components Inspection ......................... 21 . G
Wiring Diagrams and Trouble Diagnosis ................. 3 . FUEL LEVEL SENSOR UNIT CHECK ............... 21 .
PREPARATION .......................................................... 4 . Removal and Installation of Combination Meter .... 21 .
Commercial Service Tool ........................................ 4 . WARNING LAMPS ................................................... 22 .
H
COMBINATION METERS .......................................... 5 . Schematic .............................................................. 22
.
System Description ................................................. 5 . Wiring Diagram -- WARN -- ................................. 23 .
UNIFIED METER CONTROL UNIT ..................... 5 . Oil Pressure Warning Lamp Stays Off (Ignition
POWER SUPPLY AND GROUND CIRCUIT ....... 6 . Switch ON) ............................................................ 28
. I
WATER TEMPERATURE GAUGE ....................... 6 . Oil Pressure Warning Lamp Does Not Turn Off (Oil
TACHOMETER .................................................... 6 . Pressure Is Normal) ............................................... 29 .
FUEL GAUGE ...................................................... 6 . Component Inspection ........................................... 29 . J
SPEEDOMETER .................................................. 6 . OIL PRESSURE SWITCH .................................. 29 .
CAN COMMUNICATION SYSTEM DESCRIP- A/T INDICATOR ....................................................... 30 .
TION ..................................................................... 6
. Wiring Diagram -- AT/IND -- ................................ 30 . DI
Component Parts and Harness Connector Location 7 ..... Trouble Diagnosis .................................................. 32 .
Combination Meter .................................................. 8 . A/T Indicator Does Not Illuminate .......................... 32 .
CHECK ................................................................. 8
. WARNING CHIME .................................................... 33 .
Circuit Diagram ....................................................... 9
. Component Parts and Harness Connector Location 33 ... L
Wiring Diagram -- METER -- ............................... 10 . System Description ................................................ 34 .
Terminals and Reference Value for Combination FUNCTION ......................................................... 34 .
Meter ..................................................................... 12
. IGNITION KEY WARNING CHIME .................... 34 . M
Meter/Gauge Operation and Odo/Trip Meter ........ 13 . LIGHT WARNING CHIME .................................. 34 .
SELF-DIAGNOSIS FUNCTION ......................... 13 . SEAT BELT WARNING CHIME .......................... 34 .
HOW TO INITIATE COMBINATION METER LOW FUEL WARNING CHIME .......................... 35 .
SELF- DIAGNOSIS MODE ................................ 13 . CAN Communication System Description ............. 35 .
COMBINATION METER SELF- DIAGNOSIS Wiring Diagram -- CHIME -- ................................ 36 .
MODE FUNCTIONS .......................................... 13 . Terminals and Reference Value for BCM .............. 38 .
How to Proceed With Trouble Diagnosis ............... 15 . Terminals and Reference Value for Combination
Diagnosis Flow ...................................................... 15. Meter ..................................................................... 39
.
Power Supply and Ground Circuit Inspection ....... 16 . How to Proceed With Trouble Diagnosis ............... 39 .
Symptom Chart ..................................................... 17 . Preliminary Check ................................................. 39 .
Vehicle Speed Signal Inspection ........................... 17 . INSPECTION FOR POWER SUPPLY AND
Water Temperature Signal Inspection ................... 17 . GROUND CIRCUIT ............................................ 39 .
Engine Speed Signal Inspection ........................... 17 . CONSULT-II Function (BCM) ................................ 41 .
Fuel Level Sensor Unit Inspection ........................ 18 . CONSULT-II BASIC OPERATION PROCEDURE
FUEL LEVEL SENSOR UNIT ............................ 18 . ... 41
LOW-FUEL WARNING LAMP ............................ 18 . DATA MONITOR ................................................ 42 .

Revision: September 2004 DI-1 2005 Quest
ACTIVE TEST .................................................... 42 . Pre-diagnosis Inspection ........................................54 .
SELF-DIAGNOSTIC RESULTS .......................... 42 . SENSOR STATUS CHECK ................................54 .
All Warning Chimes Do Not Operate ..................... 43 . Self-diagnosis Function ..........................................54 .
Key Warning Chime and Light Warning Chime Do ENTERING DIAGNOSTICS MODE ....................54 .
Not Operate (Seat Belt Warning Chime Does Oper- REQUESTING NUMBER OF FAULT CODES
ate) ........................................................................ 43
. MODE .................................................................54
.
Key Warning Chime Does Not Operate ................. 44 . REQUESTING FAULT CODES MODE ...............55 .
Light Warning Chime Does Not Operate ............... 46 . IDLING OR CLEARING FAULT CODES MODE...55
Seat Belt Warning Chime Does Not Operate ........ 47 . Preliminary Check ..................................................56
.
REAR SONAR SYSTEM .......................................... 49 . INSPECTION FOR POWER SUPPLY AND
Component Parts and Harness Connector Location 49 ... GROUND CIRCUIT ............................................56 .
System Description ................................................ 49 . Symptom Chart ......................................................57
.
FUNCTION ......................................................... 49 . Component Inspection ...........................................58 .
REAR SONAR SYSTEM OFF SWITCH ............. 49 . SONAR BUZZER ................................................58 .
SONAR BUZZER ............................................... 50 . REAR SONAR SYSTEM OFF SWITCH .............58 .
REAR SONAR SENSOR .................................... 50 . REAR SONAR SYSTEM OFF INDICATOR ........58 .
Wiring Diagram -- SONAR -- ............................... 51 . Removal and Installation of Rear Sonar System ...58
Terminals And Reference Value For Sonar Control REAR SONAR SENSORS ..................................58 .
Unit ........................................................................ 53
. SONAR CONTROL UNIT ...................................58 .
How to Proceed With Trouble Diagnosis ............... 53 .

Revision: September 2004 DI-2 2005 Quest
PRECAUTION

PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS005P8

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 EKS005P9

When you read wiring diagrams, refer to the following:
H
q Refer to GI-12, "How to Read Wiring Diagrams" .
q Refer to PG-4, "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-25, "How to Perform Efficient Diagnosis for an Electrical Incident" .
J

Revision: September 2004 DI-3 2005 Quest
PREPARATION

PREPARATION PFP:00002

Commercial Service Tool EKS005PA

Tool name Description
Loosening bolts and nuts

Power tool

PBIC0191E

Revision: September 2004 DI-4 2005 Quest
COMBINATION METERS

COMBINATION METERS PFP:24814
A
System Description EKS005PB

UNIFIED METER CONTROL UNIT
q Speedometer, odometer, tachometer, fuel gauge and water temperature gauge are controlled by the uni- B
fied meter control unit, which is built into the combination meter.
q Warning indicators are controlled by signals drawn from the CAN communication system, BCM (body con-
trol module), and components connected directly to the combination meter.
C
q Digital meter is adopted for odometer.*
*The record of the odometer is kept even if the battery cable is disconnected.
q Odometer and A/T indicator segments can be checked in diagnosis mode.
D
q Meters/gauges can be checked in diagnosis mode.
Illumination control
The unified meter control unit outputs the odometer, A/T indicator, fuel and temperature gauge lighting when E
the ignition switch is turned on. When the lighting switch is turned on, the illumination control switch can be
used to adjust the brightness of the combination meter illumination and the odometer and meter illumination.
When the ignition switch is in the START position, the combination meter dial lighting and illumination control F
switch lighting are turned off. For additional combination meter illumination control information, refer to LT-154,
"System Description" .
G

Revision: September 2004 DI-5 2005 Quest
COMBINATION METERS

POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
q through 15A fuse [No.19, located in the fuse block (J/B)]
q to combination meter terminal 31.
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 30.
Ground is supplied
q to combination meter terminal 32
q through body grounds M57, M61 and M79.
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
ECM provides a water temperature signal to combination meter via CAN communication lines.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm).
ECM provides an engine speed signal to combination meter via CAN communication lines.
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
q to combination meter terminal 3
q through fuel level sensor unit and fuel pump terminal 5
q through fuel level sensor unit and fuel pump terminal 2
q from combination meter terminal 2.
SPEEDOMETER
ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via CAN
communication lines.
CAN COMMUNICATION SYSTEM DESCRIPTION
Refer to LAN-5, "CAN COMMUNICATION" .

Revision: September 2004 DI-6 2005 Quest
COMBINATION METERS

Component Parts and Harness Connector Location EKS005PC

WKIA1125E I

Revision: September 2004 DI-7 2005 Quest
COMBINATION METERS

Combination Meter EKS005PD

CHECK

WKIA3203E

Revision: September 2004 DI-8 2005 Quest
COMBINATION METERS

Circuit Diagram EKS005PE

LKWA0257E

Revision: September 2004 DI-9 2005 Quest
COMBINATION METERS

Wiring Diagram -- METER -- EKS005PF

WKWA1847E

Revision: September 2004 DI-10 2005 Quest
COMBINATION METERS

WKWA1848E

Revision: September 2004 DI-11 2005 Quest
COMBINATION METERS

Terminals and Reference Value for Combination Meter EKS005PG

Condition
Terminal Wire Reference value (V)
Item Ignition
No. color Operation or condition (Approx.)
switch
Fuel level sensor signal Refer to DI-18, "Fuel Level Sensor
2 G/Y -- --
input Unit Inspection" .
Fuel level sensor signal Refer to DI-18, "Fuel Level Sensor
3 B -- --
output Unit Inspection" .
Brake pedal pressed Battery voltage
7 R/Y Stop lamp switch input OFF
Brake pedal released 0V
Refer to LT-155, "ILLUMINATION
10 R/Y Illumination control switch -- Lighting switch ON OPERATION BY LIGHTING
SWITCH" .
Vehicle speed signal out-
11 V/R ON
put for 4 Speed A/T

When vehicle speed is
Vehicle speed signal out- approx. 40 km/h (25 MPH)
14 P/L ON
put

SKIA0168E

27 L CAN-H -- -- --
28 P CAN-L -- -- --
Ignition switch ON or
30 O ON -- Battery voltage
START
31 Y/R Battery power supply OFF -- Battery voltage
32 B/W Ground ON -- 0V

Revision: September 2004 DI-12 2005 Quest
COMBINATION METERS

Meter/Gauge Operation and Odo/Trip Meter EKS005PI

SELF-DIAGNOSIS FUNCTION A
The following items can be checked during Combination Meter Self-Diagnosis Mode.
q Gauge sweep and present gauge values.
B
q Gauge input signals.
q Odometer, fuel gauge and engine temperature gauge segments.
q Illumination LEDs.
C
q Current odometer value stored in non-volatile memory (NVM).
q DTCs.
q Estimated present battery voltage. D
q Seat belt buckle switch LH status.
HOW TO INITIATE COMBINATION METER SELF- DIAGNOSIS MODE
E
NOTE:
Once entered, Combination Meter Self-Diagnosis Mode will function with the ignition switch in ON or START.
Combination Meter Self-Diagnosis Mode will exit upon turning the ignition switch to OFF.
To initiate Combination Meter Self-Diagnosis Mode, refer to the following procedure. F
1. Turn ignition switch and high beam headlamps OFF.
2. Apply brake pedal and turn ignition switch ON.
3. Within 3 seconds of turning ignition switch ON, engage flash to pass and hold for 5 to 8 seconds. G
NOTE:
If the self-diagnosis function is activated, the odometer/trip meter will display tESt.
H
COMBINATION METER SELF- DIAGNOSIS MODE FUNCTIONS
To interpret Combination Meter Self-Diagnosis Mode functions, refer to the following table.
Event Odometer Display Description of Test/Data Notes: I
Flash-to-pass and brake
Initiating self-diagnosis
pedal held from 5 to 8 tESt
mode
seconds or until released J
Flash-to-pass and brake Does not enter Combina-
pedal held more than 8 Odometer tion Meter Self-Diagnosis
seconds Mode. DI
Performs sweep of all
Flash-to-pass and brake gauges, then displays
Initiating self-diagnosis
pedal released within 5 to GAGE present gauge values.
mode L
8 seconds Performs checksum tests
on ROM and EE.
Lights all A/T indicator,
Flash to pass engaged M
odometer, fuel, and Initiating self-diagnosis
and released = next test (All segments illuminated)
engine temperature dis- mode complete
requested
play segments.
Illuminates all micro-con-
trolled lamps/LEDs
Next test requested bulb
regardless of SW configu-
ration.
Return to normal opera-
tion of all lamps/LEDs and
displays hex ROM rev. If
Next test requested rXXXX, FAIL a ROM checksum fault
exists, display alternates
between "r XXXX" and
"FAIL".
Displays hex ROM rev as
Next test requested nrXXXX
stored in NVM.

Revision: September 2004 DI-13 2005 Quest
COMBINATION METERS

Event Odometer Display Description of Test/Data Notes:
Hex EE level. If EE
checksum fault exists,
Next test requested EE XX, FAIL display alternates
between "EE XX" and
"FAIL".
Hex coding of final manu-
Next test requested dtXXXX
facturing test date.
Displays a 16 bit DTC in
hex format. DTCs dis- Each select button press
played are those detected will cause a different DTC
in continuous operation, to be displayed until all
Next test requested dtc, XXXX not during self-diagnosis. DTC's are displayed. If
Display alternates there are no or no more
between "dtc" and actual DTC's, proceed to next
DTC ("XXXX") or function.
"NONE".
Raw speed value in hun- Will display "-----" if mes-
dredths of MPH. Speed- sage is not received. Will
Next test requested XXXXX
ometer indicates present display "99999" if data
speed. received is invalid.
Raw speed value in hun- Will display "-----" if mes-
dredths of KPH. Speed- sage is not received. Will
Next test requested XXXXX
ometer indicates present display "99999" if data
speed. received is invalid.
Tachometer value in
Will display "-----" if mes-
Next test requested tXXXXX RPM. Tachometer indi-
sage is not received.
cates present RPM.
Present ratioed fuel level 000-009 = Short circuit
A/D input 1 in decimal for- 010-254 = Normal range
Next test requested F1 XXX
mat. Fuel gauge indicates 255 = Open circuit
present filtered level. --- = Missing 5 seconds
0xx = Normal mode xx #
of segments
Next test requested FGM XXX Fuel gauge display mode.
1xx = Expand mode xx #
of segments
Last temperature gauge
Will display "---"C if mes-
input value in degrees C.
sage is not received.
Next test requested XXXC Temperature gauge indi-
Will display "999" if data
cates present filtered tem-
received is invalid.
perature.
Temperature gauge dis- X = number of display
Next test requested tGX
play segments. segments commanded
Estimated present bat-
Next test requested BAtXX.X
tery voltage.
Seat belt buckle switch 1= Buckled
Next test requested rES -X
LH status. 0 = Unbuckled
Next test requested PA -XX to PAO -XX Not used.
Return to beginning of
Next test requested GAGE
self-diagnosis.

Revision: September 2004 DI-14 2005 Quest
COMBINATION METERS

How to Proceed With Trouble Diagnosis EKS005PK

A
1. Confirm the symptom or customer complaint.
2. Perform diagnosis according to diagnosis flow. Refer to DI-15, "Diagnosis Flow" .
3. According to the symptom chart, repair or replace the cause of the symptom.
B
4. Does the meter operate normally? If so, go to 5. If not, go to 2.
5. Inspection End.
Diagnosis Flow EKS005PL
C
1. CHECK WARNING INDICATOR ILLUMINATION
1. Turn ignition switch ON. D
2. Make sure warning indicators (such as malfunction indicator lamp and oil pressure warning indictor) illumi-
nate.
Do warning indicators illuminate? E
YES >> GO TO 2.
NO >> Check ignition power supply system of combination meter. Refer to DI-16, "Power Supply and
Ground Circuit Inspection" . F

2. CHECK SELF-DIAGNOSIS OPERATION OF COMBINATION METER
Perform combination meter self-diagnosis. Refer to DI-13, "SELF-DIAGNOSIS FUNCTION" . G
Does self-diagnosis function operate?
YES >> GO TO 3.
H
NO >> Check the following.
q Combination meter power supply and ground circuit. Refer to DI-16, "Power Supply and
Ground Circuit Inspection" .
I
3. CHECK ODOMETER, FUEL AND TEMPERATURE GAUGE OPERATION
Check segment display status of odometer, fuel and temperature J
gauge.
Is the display normal?
YES >> GO TO 4. DI
NO >> Replace the combination meter. Refer to IP-12, "Combi-
nation Meter" .
L

WKIA1126E M

4. CHECK COMBINATION METER CIRCUIT
Check operation of each meter/gauge in self-diagnosis mode.
OK or NG
OK >> Go to DI-17, "Symptom Chart" .
NG >> Replace the combination meter. Refer to IP-12, "Combi-
nation Meter" .

WKIA1127E

Revision: September 2004 DI-15 2005 Quest
COMBINATION METERS

Power Supply and Ground Circuit Inspection EKS005PM

1. CHECK FUSES
Check for blown combination meter fuses.
Unit Power source Fuse No.
Battery 19
Combination meter
Ignition switch ON or START 14
Refer to DI-10, "Wiring Diagram -- METER --" .
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 PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .

2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect combination meter connector M23.
2. Check voltage between combination meter harness connector
terminals and ground.
Terminals Ignition switch position
(+)
Terminal (

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