sensor INFINITI QX56 2011 Factory Service Manual

MIR-30
< REMOVAL AND INSTALLATION >
INSIDE MIRROR
REMOVAL AND INSTALLATION
INSIDE MIRROR
Exploded ViewINFOID:0000000006257234
With rain sensor models
Without rain sensor models
Removal and InstallationINFOID:0000000006257235
WITH RAIN SENSOR MODELS
JMLIA0907GB
1. Rain sensor cover 2. Windshield glass 3. Rain sensor
4. Mirror base 5. Harness connector 6. TORX bolt
7. Inside mirror : Pawl
Refer to GI-4, "
Components" for symbols in the figure.
JMLIA0906GB
1. Windshield glass 2. Mirror base 3. Harness connector
4. TORX bolt 5. Inside mirror 6. Inside mirror cover
Refer to GI-4, "
Components" for symbols in the figure.
Revision: 2010 May2011 QX56

INSIDE MIRRORMIR-31
< REMOVAL AND INSTALLATION >
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Removal
1. Disengage rain sensor cover fixing pawls with a remover tool to remove.
2. Disconnect harness connector from inside mirror.
3. Loosen TORX bolt and slide inside mirror upward to remove.
Installation
Install in the reverse order of removal.
WITHOUT RAIN SENSOR MODELS
Removal
1. Remove inside mirror cover.
2. Disconnect harness connector from inside mirror.
3. Loosen TORX bolt and slide inside mirror upward to remove.
Installation
Install in the reverse order of removal.
Revision: 2010 May2011 QX56

MWI-2
DIAGNOSIS SYSTEM (COMBINATION
METER) ..............................................................
29
On Board Diagnosis Function .............................. ...29
CONSULT-III Function ...........................................30
ECU DIAGNOSIS INFORMATION ..............35
COMBINATION METER ................................. ...35
Reference Value .................................................. ...35
Fail-Safe .................................................................42
DTC Index ..............................................................43
IPDM E/R ...........................................................44
List of ECU Reference ......................................... ...44
WIRING DIAGRAM .....................................45
METER SYSTEM ............................................ ...45
Wiring Diagram .................................................... ...45
CLOCK ...............................................................55
Wiring Diagram .................................................... ...55
BASIC INSPECTION ...................................57
DIAGNOSIS AND REPAIR WORKFLOW
(METER SYSTEM ) .......................................... ...
57
Work flow ............................................................. ...57
DTC/CIRCUIT DIAGNOSIS ...................... ...59
U1000 CAN COMM CIRCUIT ......................... ...59
Description ........................................................... ...59
DTC Logic ...............................................................59
Diagnosis Procedure .............................................59
U1010 CONTROL UNIT (CAN) .........................60
Description ........................................................... ...60
DTC Logic ...............................................................60
Diagnosis Procedure ..............................................60
B2205 VEHICLE SPEED ...................................61
Description ........................................................... ...61
DTC Logic ...............................................................61
Diagnosis Procedure .............................................61
B2267 ENGINE SPEED .....................................62
Description ........................................................... ...62
DTC Logic ...............................................................62
Diagnosis Procedure ..............................................62
B2268 WATER TEMP ........................................63
Description ........................................................... ...63
DTC Logic ...............................................................63
Diagnosis Procedure ..............................................63
POWER SUPPLY AND GROUND CIRCUIT .....64
COMBINATION METER ........................................ ...64
COMBINATION METER : Diagnosis Procedure ....64
TRIP RESET AND ILLUMINATION CON-
TROL SWITCH SIGNAL CIRCUIT ....................
65
Diagnosis Procedure ............................................ ...65
Component Inspection ............................................66
TRIP COMPUTER SWITCH SIGNAL CIRCUIT
...
67
Diagnosis Procedure ............................................ ...67
Component Inspection ............................................68
FUEL LEVEL SENSOR SIGNAL CIRCUIT .......69
Component Function Check ................................ ...69
Diagnosis Procedure ..............................................69
Component Inspection ............................................70
OIL PRESSURE SWITCH SIGNAL CIRCUIT ...71
Component Function Check ...................................71
Diagnosis Procedure ...............................................71
Component Inspection ............................................71
WASHER LEVEL SWITCH SIGNAL CIRCUIT ...73
Diagnosis Procedure ............................................ ...73
Component Inspection ............................................73
A/C AUTO AMP. CONNECTION RECOGNI-
TION SIGNAL CIRCUIT ....................................
74
Diagnosis Procedure ........................................... ...74
SYMPTOM DIAGNOSIS ............................75
THE FUEL GAUGE INDICATOR DOES NOT
OPERATE ....................................................... ...
75
Description ........................................................... ...75
Diagnosis Procedure ...............................................75
THE TRIP RESET AND ILLUMINATION CON-
TROL SWITCH IS INOPERATIVE ....................
76
Description ........................................................... ...76
Diagnosis Procedure ...............................................76
THE TRIP COMPUTER SWITCH IS INOPER-
ATIVE .................................................................
77
Description ........................................................... ...77
Diagnosis Procedure ...............................................77
THE OIL PRESSURE WARNING LAMP
DOES NOT TURN ON .................................... ...
78
Description ........................................................... ...78
Diagnosis Procedure ...............................................78
THE OIL PRESSURE WARNING LAMP
DOES NOT TURN OFF .................................. ...
79
Description ........................................................... ...79
Diagnosis Procedure ...............................................79
THE PARKING BRAKE RELEASE WARNING
CONTINUES DISPLAYING, OR DOES NOT
DISPLAY ............................................................
80
Description ........................................................... ...80
Diagnosis Procedure ...............................................80
Revision: 2010 May2011 QX56

MWI-4
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006369687
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. 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
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” 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 that 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 “SRS AIR BAG”.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric 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 3 minu tes before performing any service.
Revision: 2010 May2011 QX56

MWI-6
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
METER SYSTEM
METER SYSTEM : Component Parts LocationINFOID:0000000006221690
1.IPDM E/R
Refer to
PCS-4, "Component Parts
Location". 2.
ECM
Refer to
EC-16, "
Component Parts
Location". 3. Washer level switch
4. Oil pressure switch
Refer to
EM-57, "
Exploded View".5. Ambient sensor 6. A/C auto amp.
Refer to
HAC-6, "
FRONT AUTO-
MATIC AIR CONDITIONING SYS-
TEM : Component Parts Location".
7. TCM
Refer to
TM-10, "
A/T CONTROL
SYSTEM : Componen t Parts Loca-
tion". 8.ABS actuator and electric unit (con-
trol unit)
Refer to
BRC-10, "
Component Parts
Location". 9.BCM
Refer to
BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion".
10. Fuel level sensor unit 11. Trip computer switch 12. Combination meter
13. Trip reset and illumination control
switch 14. Parking brake switch
A. Under of left side second seat
JSNIA3157ZZ
Revision: 2010 May2011 QX56

MWI
COMPONENT PARTSMWI-7
< SYSTEM DESCRIPTION >
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METER SYSTEM : Com ponent DescriptionINFOID:0000000006221691
CLOCK
Unit Description
Combination meter Controls the following with the signals received from each unit via CAN communication and the sig-
nals from switches and sensors.
 Speedometer
 Tachometer
 Engine coolant temperature gauge
 Fuel gauge
 Engine oil pressure gauge
 Voltmeter
 Warning lamps
 Indicator lamps
 Meter illumination control
 Meter effect function
 Information display
Trip computer switch Transmits the following signals to the combination meter.
 Enter switch signal
 Select switch signal
Trip reset and illumination con-
trol 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 status signal
 Fuel consumption monitor signal
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter via CAN communication.
IPDM E/R Transmits the oil pressure switch signal to the BCM via CAN communication.
BCM Transmits the following signals to the combination meter via CAN communication.
 Oil pressure switch signal
 Position light request signal
 Dimmer signal
 Door switch signal
 Meter ring illumination request signal
 Starter relay status signal
TCM Transmits the shift position signal to the combination meter via CAN communication.
A/T shift selector Transmits the following signals to the combination meter.
 Manual mode signal
 Non-manual mode signal
 Manual mode shift up signal
 Manual mode shift down signal
Fuel level sensor unit Transmits the fuel level sensor signal to the combination meter.
Oil pressure switch Transmits the oil pressure switch signal to the IPDM E/R.
Ambient sensor Transmits the ambient sensor signal to the combination meter.
A/C auto amp. Transmits the A/C auto amp. connection recognition signal to the combination meter.
Parking brake switch Transmits the parking brake switch signal to the combination meter.
Washer level switch Transmits the washer level switch signal to the combination meter.
Revision: 2010 May2011 QX56

MWI
SYSTEMMWI-9
< SYSTEM DESCRIPTION >
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SYSTEM
METER SYSTEM
METER SYSTEM : System DiagramINFOID:0000000006221693
METER SYSTEM : System DescriptionINFOID:0000000006221694
COMBINATION METER
 The combination meter receives necessary signals from each unit, switch, and sensor to control the follow-
ing functions.
- Measuring instruments
- Warning lamps
- Indicator lamps
- Meter illumination control
- Meter effect function
- Information display
 The combination meter incorporates a buzzer func tion that sounds an audible alarm with the integrated
buzzer device. Refer to WCS-5, "
Combination Meter" for further details.
 The combination meter includes an on board diagnosis function.
 The combination meter can be diagnosed with CONSULT-III.
METER CONTROL FUNCTION LIST
JSNIA2995GB
Revision: 2010 May2011 QX56

MWI
SYSTEMMWI-13
< SYSTEM DESCRIPTION >
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SPEEDOMETER
SPEEDOMETER : System DiagramINFOID:0000000006221696
SPEEDOMETER : System DescriptionINFOID:0000000006221697
 The ABS actuator and electric unit (control unit) conv erts the rectangular wave signal provided by the wheel
sensor to a vehicle speed signal and transmits it to the combination meter via CAN communication.
 The combination meter indicates the vehicle speed to the speedometer according to the vehicle speed sig-
nal received via CAN communication.
TACHOMETER
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON by suspending communication.
VDC warning lamp
Brake warning lamp
IBA OFF indicator lamp
4WD warning lamp
Malfunction indicator lamp
VDC OFF indicator lamp
CRUISE 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
Tail lamp indicator lamp
A/T CHECK indicator lamp
Key warning lamp
AT P w a r n i n g l a m p
Lane departure warning lamp
LDP ON indicator lamp
CRUISE indicator lamp
Oil pressure warning lamp
SNOW mode indicator lamp
TOW mode indicator lamp
CK SUSP indicator lamp
BSW indicator lamp
Function Specifications
JSNIA2382GB
Revision: 2010 May2011 QX56

MWI-14
< SYSTEM DESCRIPTION >
SYSTEM
TACHOMETER : System Diagram
INFOID:0000000006221698
TACHOMETER : System DescriptionINFOID:0000000006221699
 ECM converts the pulse signal provided by the crankshaft position sensor to an engine speed signal and
transmits it to the combination meter via CAN communication.
 The combination meter indicates the engine speed to the tachometer according to the engine speed signal
received via CAN communication.
ENGINE COOLANT TEMPERATURE GAUGE
ENGINE COOLANT TEMPERATURE GAUGE : System DiagramINFOID:0000000006221700
ENGINE COOLANT TEMPERATURE GAUGE : System DescriptionINFOID:0000000006221701
 ECM reads the engine coolant temperature signal from the engine coolant temperature sensor and transmits
the signal to the combination meter via CAN communication.
 The combination meter indicates the engine coolant temperature to the engine coolant temperature gauge
according to the engine coolant temperature signal received via CAN communication.
FUEL GAUGE
FUEL GAUGE : System DiagramINFOID:0000000006221702
FUEL GAUGE : System DescriptionINFOID:0000000006221703
CONTROL OUTLINE
The combination meter reads the fuel level sensor signal from the fuel level sensor unit and indicates the fuel
level to the fuel gauge.
JSNIA2462GB
JSNIA3015GB
JSNIA3000GB
Revision: 2010 May2011 QX56

MWI-20
< SYSTEM DESCRIPTION >
SYSTEM
INFORMATION DISPLAY : System Description
INFOID:0000000006221717
DESCRIPTION
 The combination meter receives signals necessary for controlling the operation of the information display from each unit, sensor and switch.
 The combination meter incorporates a trip computer t hat displays the warning/information according to the
information received from each unit, sensor and switch.
 The combination meter shows the following functions on the information display.
- Odo/trip meter
- Shift position indicator
- Trip computer
- Interrupt indication
- Warning check indication
- Setting
ODO/TRIP METER
 The ABS actuator and electric unit (control unit) r eads the rectangular wave signal provided by the wheel
sensor and transmits the vehicle speed signal to the combination meter via CAN communication.
 The combination meter converts the vehicle speed signal received via CAN communication to mileage, and it displays the accumulated mileage on the information display.
SHIFT POSITION INDICATOR
MANUAL MODE
 The combination meter receives the following signal and transmits the signal to TCM via CAN communica-tion.
 TCM judges a shift position, manual mode, and manual mode information, based on a signal received from
the combination meter via CAN communication and transmi ts the following signals to the combination meter
via CAN communication.
 The combination meter activates the shift position indicator, and manual mode information, based on signals received from TCM via CAN communication.
NOTE:
When receiving a manual mode shift refusal signal from TCM via CAN communication, the combination meter
blinks the shift position indicator lamp and allows the integrated buzzer to ring a beep tone. For further infor-
mation, refer to TM-54, "
SHIFT PATTERN CONTROL : System Description".
NON-MANUAL MODE
 Combination meter inputs non-manual mode signal from A/T shift selector (manual mode switch), and trans-
mits the signals to TCM with CAN communication line.
 TCM transmits shift position signal to combination meter with CAN communication line.
 Combination meter indicates shift position when receiving shift position signal.
TRIP COMPUTER
Current Fuel Consumption
The combination meter calculates current fuel cons umption based on the following signals, and the calculated
value is displayed on the information display.
Signal name Signal path
Manual mode signal
A/T shift selector Combination meter TCM
Non-manual mode signal
Manual mode shift up signal
Manual mode shift down signal
Signal name Signal path
Shift position signal TCM Combination meter
Manual mode shift refusal signal
Revision: 2010 May2011 QX56