2009 INFINITI QX56 keyless entry

INTELLIGENT KEY UNITDLK-171
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
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DLK
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INTELLIGENT KEY UNIT
Reference Value - Intelligent Key UnitINFOID:0000000003775826
TERMINAL LAYOUT
PHYSICAL VALUES
WIIA1168E
Te r m i n a lWire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch Po- sition Operation or Conditions
1L/Y Steering lock sole-
noid power supply LOCK
— 5
2 L CAN-H —— —
3 P CAN-L —— —
4GR Intelligent Key warn-
ing buzzer (front of
vehicle) LOCK
Operate door request
switch. Buzzer OFF
Battery voltage
Buzzer ON 0
5B/W Front door request
switch LH —Press front door request switch LH.
0
Other than above Battery voltage
6 G/R Ignition switch (ON) ON —Battery voltage
7 B/R Key switch LOCKInsert mechanical key into ignition key
cylinder.
Battery voltage
Remove mechanical key from ignition
key cylinder. 0
8G Remote keyless en-
try receiver ground
—— 0
9GR Remote keyless en-
try receiver signal —When remote keyless entry receiver re-
ceives signal from keyfob.
Stand-by
11 Y Power source (Fuse) — —Battery voltage
12 B Ground —— 0
OCC3879D
Revision: December 20092009 QX56

DLK-206
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
INTELLIGENT KEY SYSTEM SYMPTOMS
Symptom TableINFOID:0000000003775833
ALL FUNCTIONS OF INTELLIGENT KEY SYSTEM DO NOT OPERATE
NOTE:
• Before performing the diagnosis in the following table, check “WORK FLOW”. Refer to
DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following symptoms are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• “ENGINE START BY I-KEY” and “LOCK/UNLOCK BY I-KEY” are ON when se tting on CONSULT-III.
• All doors are closed.
Symptom Diagnosis/service procedureReference page
All doors and ignition switch do not respond to
Intelligent Key command. 1. Check Intelligent Key function and battery inspection.
DLK-106
2. Check Intelligent Key unit power supply and ground circuit. DLK-68
3. Check remote keyless entry receiver.DLK-103
4. Check BCM power supply and ground circuit. DLK-68
5. Replace Intelligent Key unit.DLK-106
Revision: December 20092009 QX56

DLK-208
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION SYMPTOMS
INTELLIGENT KEY
INTELLIGENT KEY : Symptom TableINFOID:0000000003775835
REMOTE KEYLESS ENTRY FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to
DLK-
6, "Work Flow".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• Ignition switch is not depressed.
• All doors are closed.
Auto lock function does not operate properly. 1.
Check “AUTO RELOCK TIMER” setting in “WORK SUP-
PORT”. DLK-52
2. Key switch check (BCM).
DLK-115
3. Ignition knob switch check.DLK-116
4. Door switch check. DLK-71
5. Replace Intelligent Key unit.SEC-111
Key reminder function does not operate properly.1.
Check “ANTI KEY LOCK IN FUNCTION” setting in
“WORK SUPPORT”.
DLK-52
2. Door switch check.
DLK-71
3a. Inside key antenna 1 (rear of center console) check. DLK-60
3b. Inside key antenna 2 (luggage compartment) check.DLK-62
3c. Inside key antenna 3 (front of center console) check.DLK-64
3d. Inside key antenna 4 (overhead console area) check. DLK-66
4. Front door lock actuator LH (door unlock sensor) check.DLK-81
5. Intelligent Key battery and function inspection.DLK-106
6. Replace Intelligent Key unit. SEC-111
Vehicle speed sensing auto LOCK operation does
not operate.1.
Ensure automatic door lock/unlock function (lock opera-
tion) is enabled. DLK-56
2. Check combination meter vehicle speed signal.
MWI-29
3. Check intermittent incident. GI-38
Ignition OFF interlock door UNLOCK function does
not operate.1.
Ensure automatic door lock/unlock function (unlock oper-
ation) is enabled. DLK-56
2. Check BCM for DTC.
BCS-51
3. Check intermittent incident. GI-38
SymptomDiagnosis/service procedureReference page
Symptom Diagnosis/service procedureReference
page
All of the remote keyless entry functions do not
operate. 1. Intelligent Key battery and function inspection.
DLK-106
2. Remote Keyless Entry function check.DLK-103
3. Replace Intelligent Key unit. SEC-111
Selective unlock function does not operate by In-
telligent Key remote control button.1.
Check “SELECT UNLOCK FUNCTION” setting in “WORK SUP-
PORT”.
DLK-56
2. Intelligent Key battery inspection.
DLK-106
3. Replace Intelligent Key unit. SEC-111
Revision: December 20092009 QX56

DLK-210
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER SWITCH
BACK DOOR OPENER SWITCH : Symptom TableINFOID:0000000003775836
TRUNK OPEN FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “WORK FLOW”. Refer to
DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• Vehicle is in park.
BACK DOOR HANDLE
Symptom Suspect systemsRefer to
Automatic operations are not executed from the back door fully
closed or fully open position.
(Auto closure operates normally). Power liftgate switch system inspection
DLK-141
Park switch —
Power window serial link —
Pinch strip system inspection DLK-133
Automatic operations are not carried out together with open/close
operations.
(Manual operations are normal). Power liftgate switch system inspection
DLK-141Back door close switch system inspectionDLK-137
Auto back door power supply and ground cir-
cuit system inspection. DLK-69
The auto closure function does not operate.
(Stops at the halfway position for auto closing operations).
Pinch strip system inspection
DLK-133
During auto closing operations, if obstruction is detected, the door
does not operate in reverse. Back door motor assembly
DLK-243
During close or cinch operations, the door does not operate in re-
verse if the back door handle is operated. Handle switch system
DLK-140
When the keyfob is operated, the back door does not operate au-
tomatically. Remote keyless entry system inspection
DLK-103Power window serial link —
Pinch strip system inspection DLK-133
Auto closure does not operate. Half-latch switch system
DLK-135Cinch latch motor systemDLK-139
Handle switch systemDLK-140
The back door does not open.
(Closure motor rotation is not reversed). Open switch system
DLK-136
Handle switch systemDLK-140
Warning chime does not sound. Back door warning chime systemDLK-134
Auto closure operation works, but the back door is not fully closed Close switch system
DLK-137
Handle switch systemDLK-140
Cinch latch motor systemDLK-139
Back door latch assembly mechanism dam-
aged or worn.DLK-243
Auto open operation releases lock, but does not fully open back
door. Glass hatch ajar switch check
DLK-129
Glass hatch lock actuator does not operate
(Right front door must be unlocked for normal operation) Glass hatch switch check
DLK-127Glass hatch lock actuator check DLK-92
Replace BCMBCS-56
Revision: December 20092009 QX56

PREPARATIONDLK-227
< PREPARATION > [WITH INTELLIGENT KEY SYSTEM]
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000003775849
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
—
(J-39570)
Chassis ear Locating the noise
—
(J-43980)
NISSAN Squeak and Rat-
tle Kit Repairing the cause of noise
—
(J-43241)
Remote Keyless Entry
Te s t e r Used to test keyfobs
SIIA0993E
SIIA0994E
LEL946A
Revision: December 20092009 QX56

TURN SIGNAL AND HAZARD WARNING LAMPSEXL-15
< FUNCTION DIAGNOSIS >
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TURN SIGNAL AND HA ZARD WARNING LAMPS
System DiagramINFOID:0000000003776163
System DescriptionINFOID:0000000003776164
TURN SIGNAL OPERATION
When the turn signal switch is in LH or RH position with the ignition switch in ON position, the BCM detects the
TURN RH or TURN LH ON request. The BCM outputs the fl asher signal to the respective turn signal lamp.
The BCM also sends a turn indicator signal ON reques t via the CAN communication lines to the combination
meter. The combination meter then activates the appropriate turn signal indicator and audible buzzer.
HAZARD LAMP OPERATION
When the hazard switch is in ON position, the BCM detects the hazard switch signal ON. The BCM outputs the
flasher signal (right and left). The BCM sends a hazar d indicator signal ON request via the CAN communica-
tion lines to the combination meter. The combinati on meter then activates the hazard indicator and audible
buzzer.
REMOTE KEYLESS ENTRY OPERATION
The remote keyless entry receiver transmits a hazard request signal to the BCM, then BCM controls hazard
lamps.
Refer to SEC-7, "
System Description".
Component Parts LocationINFOID:0000000003776165
AWLIA0006GB
AWLIA1628ZZ
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)EXL-109
< ECU DIAGNOSIS >
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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
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: December 20092009 QX56

EXL-110
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
19 V/WRemote 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: December 20092009 QX56