key INFINITI QX56 2010 Factory Service Manual

WCS
WARNING CHIME SYSTEMWCS-9
< FUNCTION DIAGNOSIS >
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SEAT BELT WARNING CHIME : Component Parts LocationINFOID:0000000005146144
SEAT BELT WARNING CHIME : Component DescriptionINFOID:0000000005146145
AWNIA0211ZZ
1. Combination meter M23, M24 2. Combination switch (lighting switch)
M283. BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
4. Front door switch LH B8 5. Key switch and ignition knob switch
M12 6. Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74
Unit Description
Combination meter • Receives the seat belt buckle switch signal from the seat belt buckle switch and transmits it to
BCM via CAN communication line.
• Receives a buzzer output signal from BCM via CAN communication line and sounds the buzzer.
BCM Judges the seat belt warning condition from the seat belt buckle switch signal received from the
combination meter and transmits a buzzer output signal to the combination meter via CAN commu-
nication line if necessary.
Seat belt buckle pre-tensioner
assembly LH (seat belt buckle
switch) Transmits seat belt buckle switch signal to combination meter.
Revision: April 20092010 QX56

WCS-10
< FUNCTION DIAGNOSIS >
WARNING CHIME SYSTEM
KEY WARNING CHIME
KEY WARNING CHIME : System DiagramINFOID:0000000005146146
KEY WARNING CHIME : System DescriptionINFOID:0000000005146147
WHEN MECHANICAL KEY IS USED
With the key inserted into the key switch, and the ignition switch in the LOCK or ACC position, when driver's
door is opened, the warning chime will sound.
• BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with CAN communication line.
• When combination meter receives key warning signal, it sounds the warning chime.
WHEN INTELLIGENT KEY IS CARRIED WITH THE DRIVER
Refer to DLK-6, "Work Flow".
WKIA5464E
Revision: April 20092010 QX56

WCS
WARNING CHIME SYSTEMWCS-11
< FUNCTION DIAGNOSIS >
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KEY WARNING CHIME : Co mponent Parts LocationINFOID:0000000005146148
KEY WARNING CHIME : Component DescriptionINFOID:0000000005146149
AWNIA0211ZZ
1. Combination meter M23, M24 2. Combination switch (lighting switch)
M283. BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
4. Front door switch LH B8 5. Key switch and ignition knob switch
M12 6. Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74
Unit Description
Combination meter Receives key warning signal from BCM via CAN communication line and sounds the buzzer.
BCM Judges the key warning condition using the door switch signal received from the front door switch
LH, and the key switch signal received from the key switch and ignition knob switch. It then transmits
a buzzer output signal to the combination meter via CAN communication line if necessary.
Front door switch LH Transmits door switch signal to BCM.
Key switch and ignition knob
switch Transmits key switch signal to BCM.
Revision: April 20092010 QX56

WCS-12
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (METER)
DIAGNOSIS SYSTEM (METER)
CONSULT-III Function (METER/M&A)INFOID:0000000005382270
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
SELF-DIAG RESULTS
Display Item List
Refer to WCS-48, "DTC Index".
DATA MONITOR
Display Item List
X: Applicable
METER/M&A diagnosis mode Description
SELF-DIAG RESULTS Displays combination meter self-diagnosis results. 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.
Display item [Unit] MAIN
SIGNALS SELECTION
FROM MENU Description
SPEED METER [km/h] or [mph] X X Displays the value of vehicle speed signal.
SPEED OUTPUT [km/h] or [mph] X XDisplays the value of vehicle speed signal, which is transmitted to
each unit with
CAN communication.
TACHO METER [rpm] XX Displays the value of engine speed signal, which is input from ECM.
FUEL METER [lit.] XXDisplays the value, which processes a resistance signal from fuel
gauge.
W TEMP METER [ °C] or [° F] X XDisplays the value of engine coolant temperature signal, which is in-
put from ECM.
ABS W/L [ON/OFF] X Displays [ON/OFF] condition of ABS warning lamp.
VDC/TCS IND [ON/OFF] X Displays [ON/OFF] condition of VDC OFF indicator lamp.
SLIP IND [ON/OFF] X Displays [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Displays [ON/OFF] condition of brake warning lamp.*
DOOR W/L [ON/OFF] X Displays [ON/OFF] condition of door warning lamp.
TRUNK W/L [ON/OFF] X Displays [ON/OFF] condition of glass hatch warning lamp.
HI-BEAM IND [ON/OFF] X Displays [ON/OFF] condition of high beam indicator.
TURN IND [ON/OFF] X Displays [ON/OFF] conditio n of turn indicator.
OIL W/L [ON/OFF] X Displays [ON/OFF] condition of oil pressure warning lamp.
C-ENG W/L [ON/OFF] X Displays [ON/OFF] condition of malfunction indicator lamp.
CRUISE IND [ON/OFF] X Displays [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF] X Displays [ON/OFF] condition of SET indicator.
AT CHECK W/L [ON/OFF] X Displays [ON/OFF] condition of AT CHECK warning lamp.
FUEL W/L [ON/OFF] XX Displays [ON/OFF] condition of low-fuel warning lamp.
AIR PRES W/L [ON/OFF] X Displays [ON/OFF] condition of tire pressure warning lamp.
KEY G/Y W/L [ON/OFF] X Displays [ON/OFF] condition of key green warning lamp.
KEY R W/L [ON/OFF] X Displays [ON/OFF] condition of key red warning lamp.
KEY KNOB W/L [ON/OFF] X Displays [ON/OFF] condition of key knob warning lamp.
M RANGE SW [ON/OFF] XX Displays [ON/OFF] condition of manual mode range switch.
NM RANGE SW [ON/OFF] XXDisplays [ON/OFF] condition of except for manual mode range
switch.
AT SFT UP SW [ON/OFF] XX Displays [ON/OFF] condition of A/T shift-up switch.
Revision: April 20092010 QX56

WCS-14
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
BUZZER
BUZZER : CONSULT-III Function (BCM - BUZZER)INFOID:0000000005382325
DATA MONITOR
ACTIVE TEST
Monitor Item[Unit] Description
IGN ON SW [ON/OFF] Ignition switch (ON) st atus judged by ignition power supply input
KEY ON SW [ON/OFF] Key switch status
DOOR SW -DR [ON/OFF] Front door switch (driver side) status judged by BCM
LIGHT SW 1ST [ON/OFF] Lighting switch status judged by the lighting switch signal read with combination switch reading func-
tion
BUCKLE SW [ON/OFF] Seat belt buckle switch status
Test Item Description
LIGHT WARN ALM The light reminder warning operation can be checked by operating the relevant function (On/Off).
IGN KEY WARN ALM The key reminder warning operation can be checked by operating the relevant function (On/Off).
SEAT BELT WARN TEST The seat belt warning operation can be checked by operating the relevant function (On/Off).
DOOR WARNING IND The door open warning operation can be checked by operating the relevant function (On/Off).
Revision: April 20092010 QX56

WCS
KEY SWITCH SIGNAL CIRCUITWCS-21
< COMPONENT DIAGNOSIS >
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KEY SWITCH SIGNAL CIRCUIT
DescriptionINFOID:0000000005146162
Transmits a key switch signal to the BCM.
Component Function CheckINFOID:0000000005146163
1.CHECK BCM INPUT SIGNAL
Select “DATA MONITOR” for “BCM” and c heck the “KEY ON SW” monitor value.
>> Inspection End.
Diagnosis ProcedureINFOID:0000000005146164
Regarding Wiring Diagram information, refer to WCS-23, "Wiring Diagram".
1.CHECK FUSE
Check if the key switch and ignition knob switch 10A fuse (No. 62, located in the fuse and relay box) is blown.
Is the fuse blown?
YES >> Be sure to repair the cause of malfunction before installing new fuse.
NO >> GO TO 2
2.CHECK BCM INPUT SIGNAL
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> GO TO 3
3.CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM and key switch and ignition knob switch con- nectors.
2. Check continuity between BCM harness connector M18 and key
switch and ignition knob switch harness connector M12.
3. Check continuity between BCM harness connector M18 and ground.KEY ON SW
When key is inserted into key cylinder : ON
When key is removed from key cylinder : OFF
Te r m i n a l s
ConditionVo l ta g e
(Approx.)
(+)
(−)
BCM
connector Te r m i n a l
M18 37 Ground Key is inserted Battery voltage
Key is removed 0
PKIC0721E
AB
Continuity
Connector Terminal Connector Terminal
M18 37M12 4 Yes
AWNIA0159ZZ
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WCS-22
< COMPONENT DIAGNOSIS >
KEY SWITCH SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair harness or connector.
4.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch and ignition knob switch harness
connector and ground.
Is the inspection result normal?
YES >> Replace key switch and ignition knob switch.
NO >> Repair harness or connector.
Component InspectionINFOID:0000000005146165
1.CHECK KEY SWITCH
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check continuity between key switch and ignition knob switch terminals 3 and 4.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace key switch and ignition knob switch.
A GroundContinuity
Connector Terminal
M18 37 No
Te r m i n a l s
Voltag e
(Approx.)
(+)
(−)
Key switch and ignition
knob switch connector Terminal
M12 3Ground Battery voltage
AWNIA0160ZZ
3 – 4
When key is inserted
into key cylinder : Continuity should exist.
When key is removed
from key cylinder : Continuity should not exist.
AWNIA0158ZZ
Revision: April 20092010 QX56

WCS
BCM (BODY CONTROL MODULE)WCS-51
< 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

WCS-54
< 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

WCS
BCM (BODY CONTROL MODULE)WCS-55
< ECU DIAGNOSIS >
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O P19 V/W Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — —Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF
5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: April 20092010 QX56