
MIR-16
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
1. Loose harness or harness connectors.
2. Front console map/reading lamp lens loose.
3. Loose screws at console attachment points.
SEATS
When isolating seat noise it's important to note the pos ition the seat is in and the load placed on the seat when
the noise is present. These conditions should be dupl icated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component installed to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator installation pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine rpm or
load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
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MWI-1
DRIVER INFORMATION & MULTIMEDIA
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SECTION MWI
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CONTENTS
METER, WARNING LAMP & INDICATOR
PRECAUTION ................ ...............................4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
PREPARATION ............................................5
PREPARATION .............................................. .....5
Special Service Tools .......................................... ......5
Commercial Service Tools ........................................5
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
METER SYSTEM .........................................................6
METER SYSTEM : Compo nent Parts Location ........6
METER SYSTEM : Component Description ....... ......7
SYSTEM ..............................................................9
METER SYSTEM .........................................................9
METER SYSTEM : System Diagram ........................9
METER SYSTEM : System Description ....................9
METER SYSTEM : Arrangem ent of Combination
Meter ................................................................... ....
10
METER SYSTEM : Fail-Safe ..................................10
SPEEDOMETER ................ ........................................11
SPEEDOMETER : System Diagram ................... ....11
SPEEDOMETER : System Description ...................11
TACHOMETER ...................................................... ....11
TACHOMETER : System Diagram .........................12
TACHOMETER : System De scription .....................12
ENGINE COOLANT TEMPERATURE GAUGE .... ....12
ENGINE COOLANT TEMPERATURE GAUGE :
System Diagram .................................................. ....
12
ENGINE COOLANT TEMPERATURE GAUGE :
System Description ............................................. ....
12
FUEL GAUGE ........................................................ ....12
FUEL GAUGE : System Diagram ............................12
FUEL GAUGE : System Description .......................12
MASTER WARNING LAMP ................................... ....12
MASTER WARNING LAMP : System Diagram .......13
MASTER WARNING LAMP : System Description ....13
METER ILLUMINATION CONTROL ..................... ....13
METER ILLUMINATION CONTROL : System Di-
agram .................................................................. ....
13
METER ILLUMINATION CONTROL : System De-
scription ............................................................... ....
13
METER EFFECT FUNCTION ................................ ....13
METER EFFECT FUNCTION : System Diagram ....14
METER EFFECT FUNCTION : System Descrip-
tion ....................................................................... ....
14
INFORMATION DISPLAY ...................................... ....15
INFORMATION DISPLAY : System Diagram ..........15
INFORMATION DISPLAY : System Description .....15
COMPASS ............................................................. ....16
COMPASS : Description ..........................................16
DIAGNOSIS SYSTEM (METER) .......................18
Description ........................................................... ....18
CONSULT Function (METER/M&A) ........................18
ECU DIAGNOSIS INFORMATION ..............22
COMBINATION METER ...................................22
Reference Value .................................................. ....22
Fail-Safe ..................................................................27
DTC Index ...............................................................27
BCM, IPDM E/R .................................................29
List of ECU Reference .............................................29
WIRING DIAGRAM ......................................30
COMPASS .........................................................30
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MWI-2
Wiring Diagram .......................................................30
METER ...............................................................32
Wiring Diagram .................................................... ...32
BASIC INSPECTION ...................................51
DIAGNOSIS AND REPAIR WORKFLOW ...... ...51
Work flow ............................................................. ...51
DTC/CIRCUIT DIAGNOSIS ...................... ...53
U1000 CAN COMM CIRCUIT ......................... ...53
DTC Logic ............................................................ ...53
Diagnosis Procedure .............................................53
U1010 CONTROL UNIT (CAN) .........................54
Description ........................................................... ...54
DTC Logic ...............................................................54
Diagnosis Procedure ..............................................54
B2205 VEHICLE SPEED ...................................55
Description ........................................................... ...55
DTC Logic ...............................................................55
Diagnosis Procedure .............................................55
B2267 ENGINE SPEED .....................................56
Description ........................................................... ...56
DTC Logic ...............................................................56
Diagnosis Procedure ..............................................56
B2268 WATER TEMP ........................................57
Description ........................................................... ...57
DTC Logic ...............................................................57
Diagnosis Procedure ..............................................57
POWER SUPPLY AND GROUND CIRCUIT .....58
COMBINATION METER ........................................ ...58
COMBINATION METER : Diagnosis Procedure ....58
BCM (BODY CONTROL MODULE) ...................... ...58
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ............................................................ ...
58
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) .......................... ...
59
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .................................................................. ...
59
FUEL LEVEL SENSOR SIGNAL CIRCUIT .......61
Description ........................................................... ...61
Component Function Check ...................................61
Diagnosis Procedure .............................................61
Component Inspection ............................................62
PARKING BRAKE SWITCH SIGNAL CIR-
CUIT ................................................................ ...
63
Description ........................................................... ...63
Component Function Check ...................................63
Diagnosis Procedure ..............................................63
Component Inspection ......................................... ...63
WASHER FLUID LEVEL SWITCH CIRCUIT ....64
Description ........................................................... ...64
Diagnosis Procedure ...............................................64
Component Inspection ............................................64
AMBIENT SENSOR SIGNAL CIRCUIT ............66
Description ........................................................... ...66
Component Function Check ...................................66
Diagnosis Procedure ...............................................66
Component Inspection ............................................67
METER CONTROL SWITCH SIGNAL CIR-
CUIT ................................................................ ...
68
Diagnosis Procedure ............................................ ...68
Component Inspection ............................................69
STEERING SWITCH ..........................................70
Description ........................................................... ...70
Diagnosis Procedure ...............................................70
Component Inspection ............................................70
SYMPTOM DIAGNOSIS ............................72
THE FUEL GAUGE INDICATOR DOES NOT
OPERATE ....................................................... ...
72
Description ........................................................... ...72
Diagnosis Procedure ...............................................72
THE METER CONTROL SWITCH IS INOPER-
ATIVE .............................................................. ...
73
Description ........................................................... ...73
Diagnosis Procedure ...............................................73
THE OIL PRESSURE WARNING CONTIN-
UES DISPLAYING, OR DOES NOT DISPLAY ...
74
Description ........................................................... ...74
Diagnosis Procedure ...............................................74
THE PARKING BRAKE RELEASE WARNING
CONTINUES DISPLAYING, OR DOES NOT
DISPLAY ......................................................... ...
75
Description ........................................................... ...75
Diagnosis Procedure ...............................................75
THE LOW WASHER FLUID WARNING CON-
TINUES DISPLAYING, or DOES NOT DIS-
PLAY ............................................................... ...
76
Description ........................................................... ...76
Diagnosis Procedure ...............................................76
THE DOOR OPEN WARNING CONTINUES
DISPLAYING, OR DOES NOT DISPLAY ...... ...
77
Description ........................................................... ...77
Diagnosis Procedure ...............................................77
THE TRUNK OPEN WARNING CONTINUES
DISPLAYING, OR DOES NOT DISPLAY ...... ...
78
Description ........................................................... ...78
Diagnosis Procedure ...............................................78
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MWI-4
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951603
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 performed by
an authorized NISS AN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three minutes before performing any service.
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COMPONENT PARTSMWI-7
< SYSTEM DESCRIPTION >
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METER SYSTEM : Component DescriptionINFOID:0000000009461670
1. Steering switch 2. BCM (view with combination meter re-
moved) 3. IPDM E/R
4. Combination meter 5. Seat belt buckle switch LH (RH similar) 6. Fuel level sensor unit and fuel pump
(view with fuel pump inspection cover
removed)
7. Engine oil pressure sensor (QR25DE) 8. Engine oil pressure sensor
(VQ35DE) 9. CVT shift selector
(overdrive control switch)
(with QR25DE)
10. Power steering control module 11. ECM 12. TCM
13. ABS actuator and electric unit (control unit) 14. A/C auto amp
(with auto A/C)
(view with A/C swit ch assembly re-
moved) 15. Ambient sensor
16. Meter control switches 17. Parking brake switch (view with lower instrument panel LH
removed) 18. Air bag diagnosis sensor unit
(view with center console assembly re-
moved)
19. Brake fluid level switch 20. Washer fluid level switch (view with front fascia removed)
AWNIA2641ZZ
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MWI-8
< SYSTEM DESCRIPTION >
COMPONENT PARTS
Unit Description
Combination meter Controls the following with the signals received from each unit via CAN communication and the signals
from switches and sensors:
• Speedometer
• Tachometer
• Engine coolant temperature gauge
• Fuel gauge
• Warning lamps
• Indicator lamps
• Meter illumination control
• Meter effect function
• Information display
Meter control switch Transmits the following signals to the combination meter:
• Trip reset switch signal
• Illumination control switch signal (+)
• Illumination control switch signal ( −)
ECM Transmits the following signals to the combination meter via CAN communication:
• Engine speed signal
• Engine coolant temperature signal
• Engine oil pressure warning signal
• Fuel consumption monitor signal
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter via CAN communication.
Power steering control module Transmits the EPS signal to the combination meter via CAN communication.
BCM Transmits the following signals to the combination meter via CAN communication:
• Tire pressure information
• Position light request signal
• Low tire pressure warning lamp signal
• Door switch signal
• Trunk lamp switch signal
TCM Receives the O/D OFF switch signal from the combination meter via CAN communication.
Transmits the O/D OFF indicator request signal to the combination meter via CAN communication.
CVT shift selector switch
(overdrive co ntrol switch)
(with QR25DE) Transmits the O/D OFF switch signal to the combination meter
Fuel level sensor unit Transmits the fuel level sensor signal to the combination meter.
Seat belt buckle switch LH
(RH similar) Transmits the seat belt buckle switch LH signal to the combination meter.
Air bag diagnosis sensor unit Transmits the following signals to the combination meter:
• Seat belt buckle switch RH signal
• Air bag warning indicator
Engine oil pressure sensor Transmits the engine oil pressure sensor signal to the ECM.
Ambient sensor Transmits the ambient sensor signal to the IPDM E/R.
A/C auto amp. • Receives the ambient sensor signal from the IPDM E/R (with auto A/C).
• Transmits the ambient sensor signal to the combination meter via CAN communication.
Parking brake switch Transmits the parking brake switch signal to the combination meter.
Washer fluid level switch Transmits the washer fluid level switch signal to the combination meter.
Steering switch Transmits the following signals to the information display:
• Display signal
• Menu up signal
• Menu down signal
• Enter signal
• Back signal
IPDM E/R • Receives the ambient sensor signal from the ambient sensor.
• Transmits the ambient sensor signal to the combination meter (without auto A/C).
• Transmits the ambient sensor signal to the A/C auto amp (with auto A/C).
Brake fluid level switch Transmits the brake fluid level switch signal to the combination meter.
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SYSTEMMWI-11
< SYSTEM DESCRIPTION >
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SPEEDOMETER
SPEEDOMETER : System DiagramINFOID:0000000009461675
SPEEDOMETER : System DescriptionINFOID:0000000009461676
The ABS actuator and electric unit (control unit) provi des a vehicle speed signal to the combination meter via
CAN communication lines.
TACHOMETER
Function Specifications
Speedometer Reset to zero by suspending communication.
Tachometer
Engine coolant temperature gauge
Illumination control When suspending communication, changes to nighttime mode.
Information display Odo/trip meter An indicated value is maintained at communications blackout.
Shift position indicator The display turns OFF by suspending communication.
Warning messages The display turns OFF by suspending communication.
Buzzer The buzzer turns OFF by suspending communication.
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON by suspending communication.
O/D OFF indicator lamp
Slip indicator lamp
Brake warning lamp
Malfunction indicator lamp
VDC OFF indicator lamp
EPS warning lamp
Low tire pressure warning lamp The lamp blinking caused by suspending communication.
High beam indicator lamp
The lamp turns OFF by suspending communication.
Turn signal indicator lamp
Master warning lamp
Front lamp indicator lamp
Lane departure warning
Tail lamp indicator lamp
Air bag warning lamp
The lamp turns off when disconnected.
Charge warning lamp
Seat belt warning lamp
Security indicator lamp
AWNIA2379GB
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MWI-12
< SYSTEM DESCRIPTION >
SYSTEM
TACHOMETER : System Diagram
INFOID:0000000009461677
TACHOMETER : System DescriptionINFOID:0000000009461678
The crank position sensor sends a crankshaft positi on signal to the ECM. The ECM provides an engine speed
signal to the combination meter via CAN communication lines.
The tachometer indicates engine speed in revolutions per minute (rpm).
ENGINE COOLANT TEMPERATURE GAUGE
ENGINE COOLANT TEMPERATURE GAUGE : System DiagramINFOID:0000000009461679
ENGINE COOLANT TEMPERATURE GAUGE : System DescriptionINFOID:0000000009461680
The engine coolant temperature sensor sends an engine coolant temperature signal to the ECM. The ECM
provides an engine coolant temperature signal to t he combination meter via CAN communication lines.
The engine coolant temperature gauge indicates the engine coolant temperature.
FUEL GAUGE
FUEL GAUGE : System DiagramINFOID:0000000009461681
FUEL GAUGE : System DescriptionINFOID:0000000009461682
The fuel level sensor unit sends a variable resistor signal to the combination meter. The fuel gauge indicates
the approximate fuel level in the fuel tank.
MASTER WARNING LAMP
JSNIA2462GB
AWNIA2579GB
JSNIA3000GB
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