ECU INFINITI QX56 2010 Factory Service Manual

CCS
ICC UNITCCS-57
< ECU DIAGNOSIS >
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NOTE: DTC 55 will display when no malfunction is detected. 102 LASER STAIN
××ו ICC sensor body window has
contamination CCS-42
103 LASER SENSOR FAIL
×× × • ICC sensor internal malfunctionCCS-43
104 LASER AIMING INCMP ×× × • Laser beam aiming of ICC sensor
is not adjusted CCS-44
107 LASER COMM FAIL
×× × • CAN data received by ICC sensor
is strange (from ICC unit, combi-
nation meter or ECM) CCS-45
109 LASER HIGH TEMP
×× × • Temperature around ICC sensor
is excessively high CCS-46
DTC
No. CONSULT-III screen terms ICC sys-
tem
warning lamp Fail-safe
Malfunctions detected where... Refer-
ence
page
Veh ic le-
to-vehi-cle dis-
tance
control mode Conven-
tional
(fixed
speed) cruise
control mode Brake as-
sist (with
preview
function)
Revision: April 20092010 QX56

CHG-12
< COMPONENT DIAGNOSIS >
L TERMINAL CIRCUIT
L TERMINAL CIRCUIT
DescriptionINFOID:0000000005146561
The terminal “2” (L) circuit controls the charge warning lamp. The charge warning lamp illuminates when the
ignition switch is set to ON or START. When the generator is providing sufficient voltage with the engine run-
ning, the charge warning lamp will go off. If the c harge warning lamp illuminates with the engine running, a
malfunction is indicated.
Diagnosis ProcedureINFOID:0000000005146562
Regarding Wiring Diagram information, refer to CHG-14, "Wiring Diagram".
1.CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION
Verify generator connector E205 terminal 2 is clean and tight.
Is the connection secure?
YES >> GO TO 2.
NO >> Repair the connection. Confirm repair by per forming complete Starting/Charging system test.
Refer to diagnostic station instruction manual.
2.CHECK CHARGE WARNING LAMP CIRCUIT
1. Disconnect generator connector E205.
2. Apply ground to generator harness connector E205 terminal 2 with the ignition switch in the ON position.
Does the charge lamp illuminate?
YES >> Check generator function. Refer to CHG-5, "Work Flow".
NO >> GO TO 3.
3.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect the generator connector E205 and combination meter connector M24.
3. Check continuity between generator harness connector E205 (A) terminal 2 and combination meter harness connector M24
(B) terminal 6.
4. Check continuity between generator harness connector E205 (A) terminal 2 and ground.
Are the continuity results as specified?
YES >> Replace the combination meter. Refer to MWI-100, "Removal and Installation".
NO >> Repair the harness or connector. Charge lamp should illuminate
ALMIA0200ZZ
AB
Continuity
Connector Terminal Connector Terminal
E205 2M24 6Yes
A —
Continuity
Connector Terminal
E205 2Ground No
AWMIA1099ZZ
Revision: April 20092010 QX56

THERMOSTAT AND WATER PIPINGCO-23
< ON-VEHICLE REPAIR >
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Perform when the engine is cold.
2. Disconnect the water cut valve connector.
3. Disconnect the water hoses from the water cut valve.
4. Remove the water cut valve.
INSPECTION AFTER REMOVAL
• Place a thread so that it is caught in the valve of the thermostat.
Immerse fully in a container filled with water. Heat while stirring.
• The valve opening temperature is the temperature at which the valve opens and falls from the thread.
• Continue heating. Check the full-open lift amount.
• After checking the full-open lift amount, lower the water tempera-
ture and check the valve closing temperature.
Standard values:
INSTALLATION
Installation is in the reverse order of removal.
Installation of Thermostat
• Install the thermostat with the whole circumference of each flange
part fit securely inside the rubber ring as shown.
• Install the thermostat with the jiggle valve facing upwards.
Installation of Water Outlet Pipe and Heater Pipe
First apply a neutral detergent to the O- rings, then quickly insert the insertion parts of the water outlet pipe and
heater pipe into the installation holes.
INSPECTION AFTER INSTALLATION
• Check for leaks of the engine coolant. Refer to CO-10, "Inspection".
• Start and warm up the engine. Visually check for leaks of the engine coolant.
SLC252B
Thermostat
Valve opening temperature 80 - 84°C (176 - 183 ° F)
Full-open lift amount More than 10 mm/ 95°C (0.39 in/ 203° F)
Valve closing temperature 77°C (171 °F) or higher
KBIA2502E
Revision: April 20092010 QX56

DEF-1
DRIVER CONTROLS
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SECTION DEF
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CONTENTS
DEFOGGER
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Repair Work Flow ................................................ ......3
FUNCTION DIAGNOSIS ...............................4
REAR WINDOW DEFOGGER SYSTEM ........ .....4
System Diagram .................................................. ......4
System Description ...................................................4
Component Parts Location ........................................5
Component Description .............................................5
DIAGNOSIS SYSTEM (BCM) .............................6
COMMON ITEM ..................................................... ......6
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .......................................................
6
REAR WINDOW DEFOGGER ............................... ......6
REAR WINDOW DEFOGGER : CONSULT-III
Function (BCM - REAR DEFOGGER) ......................
7
COMPONENT DIAGNOSIS ..........................8
REAR WINDOW DEFOGGER SWITCH ........ .....8
Description .......................................................... ......8
Component Function Check ......................................8
Diagnosis Procedure .................................................8
REAR WINDOW DEFOGGER RELAY ...............9
Description .......................................................... ......9
Component Function Check ......................................9
Diagnosis Procedure .................................................9
REAR WINDOW DEFOGGER POWER SUP-
PLY AND GROUND CIRCUIT ............................
10
Description .......................................................... ....10
Component Function Check ....................................10
Diagnosis Procedure ...............................................10
Component Inspection ............................................11
DOOR MIRROR DEFOGGER LH ..................
....12
Description ........................................................... ....12
Component Function Check ....................................12
Diagnosis Procedure ...............................................12
Component Inspection .............................................13
DOOR MIRROR DEFOGGER RH .....................15
Description ...............................................................15
Component Function Check ....................................15
Diagnosis Procedure ...............................................15
Component Inspection .............................................16
ECU DIAGNOSIS .........................................18
BCM (BODY CONTROL MODULE) .................18
Reference Value .................................................. ....18
Terminal Layout .......................................................21
Physical Values ................................................... ....21
Wiring Diagram ........................................................27
Fail Safe ..................................................................34
DTC Inspection Priority Chart ...............................35
DTC Index ...............................................................35
SYMPTOM DIAGNOSIS ..............................37
REAR WINDOW DEFOGGER AND DOOR
MIRROR DEFOGGER DO NOT OPERATE. ....
37
Diagnosis Procedure ........................................... ....37
REAR WINDOW DEFOGGER DOES NOT
OPERATE BUT BOTH OF DOOR MIRROR
DEFOGGER OPERATE. ...................................
38
Diagnosis Procedure ...............................................38
BOTH DOORS MIRROR DEFOGGER DON’T
OPERATE BUT REAR WINDOW DEFOG-
GER OPERATES ..............................................
39
Diagnosis Procedure ...............................................39
DRIVER SIDE DOOR MIRROR DEFOGGER
DOES NOT OPERATE. .....................................
40
Diagnosis Procedure ...............................................40
Revision: April 20092010 QX56

DEF-6
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000005327521
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
REAR WINDOW DEFOGGER
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to BCS-54, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM part number is displayed.
CONFIGURATION • Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.
System
Sub system selection item Diagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM ×
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ×
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Remote keyless entry system MULTI REMOTE ENT ××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITONER ×
Intelligent Key system INTELLIGENT KEY ×
Combination switch COMB SW ×
Immobilizer IMMU ××
Interior room lamp battery saver BATTERY SAVER ×××
Back door open TRUNK ××
RAP (retained accessory power) RETAINED PWR ×××
Signal buffer system SIGNAL BUFFER ××
TPMS (tire pressure monitoring sys-
tem) AIR PRESSURE MONITOR
×××
Vehicle security system THEFT ALM ×××
Panic alarm system PANIC ALARM ×
Revision: April 20092010 QX56

DEF-18
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
ECU DIAGNOSIS
BCM (BODY CONTROL MODULE)
Reference ValueINFOID:0000000005327536
VALUES ON THE DIAGNOSIS TOOL
Monitor ItemCondition Value/Status
AIR COND SW A/C switch OFF
OFF
A/C switch ON ON
AUT LIGHT SYS Outside of the room is dark
OFF
Outside of the room is bright ON
AUTO LIGHT SW Lighting switch OFF
OFF
Lighting switch AUTO ON
BACK DOOR SW Back door closed
OFF
Back door opened ON
CARGO LAMP SW Cargo lamp switch OFF
OFF
Cargo lamp switch ON ON
CDL LOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the LOCK side ON
CDL UNLOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the UNLOCK side ON
DOOR SW-AS Front door RH closed
OFF
Front door RH opened ON
DOOR SW-DR Front door LH closed
OFF
Front door LH opened ON
DOOR SW-RL Rear door LH closed
OFF
Rear door LH opened ON
DOOR SW-RR Rear door RH closed
OFF
Rear door RH opened ON
ENGINE RUN Engine stopped
OFF
Engine running ON
FR FOG SW Front fog lamp switch OFF
OFF
Front fog lamp switch ON ON
FR WASHER SW Front washer switch OFF
OFF
Front washer switch ON ON
FR WIPER LOW Front wiper switch OFF
OFF
Front wiper switch LO ON
FR WIPER HI Front wiper switch OFF
OFF
Front wiper switch HI ON
FR WIPER INT Front wiper switch OFF
OFF
Front wiper switch INT ON
FR WIPER STOP Any position other than front wiper stop position
OFF
Front wiper stop position ON
HAZARD SW When hazard switch is not pressed
OFF
When hazard switch is pressed ON
Revision: April 20092010 QX56

BCM (BODY CONTROL MODULE)DEF-19
< ECU DIAGNOSIS >
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LIGHT SW 1ST Lighting switch OFF OFF
Lighting switch 1st
ON
HEAD LAMP SW1 Headlamp switch OFF
OFF
Headlamp switch 1st ON
HEAD LAMP SW2 Headlamp switch OFF
OFF
Headlamp switch 1st ON
HI BEAM SW High beam switch OFF
OFF
High beam switch HI ON
IGN ON SW Ignition switch OFF or ACC
OFF
Ignition switch ON ON
IGN SW CAN Ignition switch OFF or ACC
OFF
Ignition switch ON ON
INT VOLUME Wiper intermittent dial is in a dial position 1 - 7 1 - 7
I-KEY LOCK LOCK button of Intelligent Key is not pressed
OFF
LOCK button of Intelligent Key is pressed ON
I-KEY UNLOCK UNLOCK button of Intelligent Key is not pressed
OFF
UNLOCK button of Intelligent Key is pressed ON
KEY CYL LK-SW Door key cylinder LOCK position
ON
Door key cylinder other than LOCK position OF
KEY CYL UN-SW Door key cylinder UNLOCK position
ON
Door key cylinder other than UNLOCK position ON
KEY ON SW Mechanical key is removed from key cylinder
OFF
Mechanical key is inserted to key cylinder ON
OIL PRESS SW • Ignition switch OFF or ACC
• Engine running
OFF
Ignition switch ON ON
OPTICAL SENSOR Bright outside of the vehicle
Close to 5V
Dark outside of the vehicle Close to 0V
PASSING SW Other than lighting switch PASS
OFF
Lighting switch PASS ON
PUSH SW Return to ignition switch to LOCK position
OFF
Press ignition switch ON
REAR DEF SW Rear window defogger switch OFF
OFF
Rear window defogger switch ON ON
RR WASHER SW Rear washer switch OFF
OFF
Rear washer switch ON ON
RR WIPER INT Rear wiper switch OFF
OFF
Rear wiper switch INT ON
RR WIPER ON Rear wiper switch OFF
OFF
Rear wiper switch ON ON
RR WIPER STOP Rear wiper stop position
OFF
Other than rear wiper stop position ON
RR WIPER STP2 Rear wiper stop position
OFF
Other than rear wiper stop position ON
Monitor Item
Condition Value/Status
Revision: April 20092010 QX56

DEF-20
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
TRNK OPNR SWWhen back door opener switch is not pressed OFF
When back door opener switch is pressed
ON
TURN SIGNAL L Turn signal switch OFF
OFF
Turn signal switch LH ON
TURN SIGNAL R Turn signal switch OFF
OFF
Turn signal switch RH ON
VEHICLE SPEED While driving Equivalent to speedometer reading
Monitor Item
Condition Value/Status
Revision: April 20092010 QX56

BCM (BODY CONTROL MODULE)DEF-21
< ECU DIAGNOSIS >
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Terminal LayoutINFOID:0000000005327537
Physical ValuesINFOID:0000000005327538
LIIA2443E
Revision: April 20092010 QX56

DEF-22
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Te r m i n a lWire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
1BR/W Ignition keyhole illumi-
nation Output OFFDoor is locked (SW OFF)
Battery voltage
Door is unlocked (SW ON) 0V
2SB Combination switch
input 5 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
3G/Y Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4Y Combination switch
input 3 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
5G/B Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
9GR/R Rear window defogger
switch
Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 G Hazard lamp flash Input OFF ON (opening or closing)
0V
OFF (other than above) Battery voltage
11 O Ignition switch (ACC
or ON)
InputACC or
ON Ignition switch ACC or ON
Battery voltage
12 R/L Front door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
15 L/W Tire pressure warning
check connector
Input OFF
—5V
18 P Remote keyless entry
receiver and optical
sensor (ground)
Output OFF
—0V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: April 20092010 QX56