turn signal INFINITI QX56 2009 Factory Service Manual

DLK-50
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HAZARD AND BUZZER REMINDER FUNCTION
Component Description
INFOID:0000000003775702
Item Function
BCM Controls the hazard and buzzer reminder function (without Intelligent Key).
Intelligent Key unit Controls the hazard and buzzer reminder function (with Intelligent Key).
Combination meter Turns ON the LOCK indicator, KEY indicator, turn signal
indicator and buzzer
(built in combination meter) by the request from Intelligent Key unit via CAN com-
munication.
Intelligent Key warning buzzer Sounds by the request signal from Intelligent Key unit via CAN communication.
Revision: December 20092009 QX56

DLK-52
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Fu
nction (BCM - COMMON ITEM)INFOID:0000000004190661
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.
DOOR LOCK
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)INFOID:0000000004190662
WORK SUPPORT
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-51, "
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 PANIC ALARM ×
Revision: December 20092009 QX56

DIAGNOSIS SYSTEM (BCM)DLK-55
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
ACTIVE TEST
INTELLIGENT KEY
INTELLIGENT KEY : CONSULT-III Fu nction (BCM - INTELLIGENT KEY)INFOID:0000000004190664
DATA MONITOR
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from lock/unlock switch.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
RKE LCK-UNLCK Indicates [ON/OFF] condition of lock/unlock signal at the same time from keyfob.
RKE KEEP UNLK Indicates [ON/OFF] condition of unlock signal from keyfob.
Monitored Item
Description
Test ItemDescription
FLASHER This test is able to check right and left hazard reminder operation. The right hazard lamp turns on
when “RH” on CONSULT-III screen is touched and th e left hazard lamp turns on when "LH" on CON-
SULT-III screen is touched.
POWER WINDOW DOWN This test is able to check power window down operation. The windows are lowered when “ON” on CONSULT-III screen is touched.
HORN This test is able to check panic alarm and horn reminder operations. The alarm activate for 0.5 sec-
onds after “ON” on CONSULT-III screen is touched.
DOOR LOCK This test is able to check door lock operation. The doors lock and unlock based on the item on CON-
SULT-III screen touched.
Monitor Item [Unit] Condition
PUSH SW [ON/OFF] Indicates condition of ignition knob switch
I-KEY LOCK [ON/OFF] Indicates condition of lock signal from Intelligent Key
I-KEY UNLOCK [ON/OFF] Indicates [condition of unlock signal from Intelligent Key
I-KEY PW DWN [ON/OFF] Indicates condition of all power window signal from Intelligent Key
I-KEY TRUNK [ON/OFF] Indicates condition of trunk open signal fr om Intelligent Key
I-KEY PANIC [ON/OFF] Indicates condition of panic signal from Intelligent Key
Revision: December 20092009 QX56

DLK-58
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000003775708
CAN (Controller Area Network) is a serial communication
line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to LAN-44, "
CAN Communication Signal Chart".
DTC LogicINFOID:0000000003775709
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000003775710
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 second or more.
2. Check “Self Diagnostic Result”.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-14, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-38, "
Intermittent Incident".
DTCCONSULT-III display
description DTC Detection Condition
Possible cause
U1000 CAN COMM CIRCUIT When BCM cannot communicate CAN com-
munication signal continuously for 2 sec-
onds or more. In CAN communication system, any item (or items)
of the following listed below is malfunctioning.
•Transmission
• Receiving (ECM)
• Receiving (VDC/TCS/ABS)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (MULTI AV)
• Receiving (IPDM E/R)
Revision: December 20092009 QX56

DLK-60
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INSIDE KEY ANTENNA 1 (RE
AR OF CENTER CONSOLE)
INSIDE KEY ANTENNA 1 (REAR OF CENTER CONSOLE)
DescriptionINFOID:0000000003775714
Detects whether Intelligent Key is inside the vehicle.
Component Function CheckINFOID:0000000003775715
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL
With CONSULT-III
1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.
2. Touch “INSIDE KEY ANTENNA 1”.
3. When Intelligent Key is inside key antenna (rear of center console) detection area, hazard lamps flash.
Is the inspection result normal?
YES >> Inside key antenna 1 (rear of center console) is OK.
NO >> Refer to DLK-60, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775716
1.CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL
1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.
Is the inspection result normal?
YES >> Inside key antenna 1 (rear of center console) is OK.
NO >> GO TO 2
2.CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector and inside key antenna 1 (rear of center console) connectors.
2. Check continuity between Intelligent Key unit harness connector (A) M70 terminals 15, 16 and inside key antenna 1 (rear of center console) har ness connector (B) M209 terminals 1, 2.
3. Check continuity between Inte lligent Key unit harness connector
(A) M70 terminals 15, 16 and ground.
Test Item Condition Possible cause
INSIDE KEY ANTENNA 1 An excessive high or low voltage from inside
antenna is sent to the Intelligent Key Unit • Inside key antenna 1 (rear of center console)
• Between Intelligent Key unit and inside key antenna 1
(rear of center console)
Connector Item Te r m i n a l s
Condition Signal (V)
(Reference value)
(+) (–)
M70 Intelligent
Key unit 15 Ground Ignition
switch is
pushed.
ALKIA0585ZZPIIB7441E
Intelligent Key
unit connector
Te r m i n a l sInside key antenna
1 (rear of center
console) connector Terminals Continuity
A: M70 15
B: M209 1
Ye s
16 2
ALKIA0586ZZ
Revision: December 20092009 QX56

DLK-62
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INSIDE KEY ANTENNA 2 (LUGGAGE COMPARTMENT)
INSIDE KEY ANTENNA 2 (LUGGAGE COMPARTMENT)
DescriptionINFOID:0000000003775717
Detects whether Intelligent Key is inside the vehicle.
Component Function CheckINFOID:0000000003775718
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL
With CONSULT-III
1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.
2. Touch “INSIDE KEY ANTENNA 2”.
3. When Intelligent Key is inside key antenna (luggage compartment) detection area, hazard lamps flash.
Is the inspection result normal?
YES >> Inside key antenna 2 (luggage compartment) is OK.
NO >> Refer to DLK-62, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775719
1.CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL
1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.
Is the inspection result normal?
YES >> Inside key antenna 2 (luggage compartment) is OK.
NO >> GO TO 2
2.CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector and inside key antenna 2 (luggage compartment) connectors.
2. Check continuity between Intelligent Key unit harness connector (A) M70 terminals 35, 36 and inside key antenna 2 (luggage compartment) harness connector (B) B76 terminals 1, 2.
3. Check continuity between Inte lligent Key unit harness connector
(A) M70 terminals 35, 36 and ground.
Test Item Condition Possible cause
INSIDE KEY ANTENNA 2 An excessive high or low voltage from inside
antenna is sent to the Intelligent Key Unit • Inside key antenna 2 (luggage compartment)
• Between Intelligent Key unit and inside key antenna 2
(luggage compartment)
Connector Item Te r m i n a l s
Condition Signal (V)
(Reference value)
(+) (–)
M70 Intelligent
Key unit 35 Ground Ignition
switch is
pushed.
ALKIA0587ZZPIIB7441E
Intelligent Key
unit connector
Te r m i n a l sInside key antenna
2 (luggage compart-
ment) connector Terminals Continuity
A: M70 35
B: B76 1
Ye s
36 2
ALKIA0588ZZ
Revision: December 20092009 QX56

DLK-64
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INSIDE KEY ANTENNA 3 (FRONT OF CENTER CONSOLE)
INSIDE KEY ANTENNA 3 (FRO
NT OF CENTER CONSOLE)
DescriptionINFOID:0000000003775720
Detects whether Intelligent Key is inside the vehicle.
Component Function CheckINFOID:0000000003775721
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL
With CONSULT-III
1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.
2. Touch “INSIDE KEY ANTENNA 3”.
3. When Intelligent Key is inside key antenna (front of center console) detection area, hazard lamps flash.
Is the inspection result normal?
YES >> Inside key antenna 3 (front of center console) is OK.
NO >> Refer to DLK-64, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775722
1.CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL
1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.
Is the inspection result normal?
YES >> Inside key antenna 3 (front of center console) is OK.
NO >> GO TO 2
2.CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector and inside key antenna 3 (front of center console) connectors.
2. Check continuity between Intelligent Key unit harness connector (A) M70 terminals 13, 14 and inside key antenna 3 (front of center console) har ness connector (B) M210 terminals 1, 2.
3. Check continuity between Inte lligent Key unit harness connector
(A) M70 terminals 13, 14 and ground.
Test Item Condition Possible cause
INSIDE KEY ANTENNA 3 An excessive high or low voltage from inside
antenna is sent to the Intelligent Key Unit • Inside key antenna 3 (front of center console)
• Between Intelligent Key unit and inside key antenna 3
(front of center console)
Connector Item Te r m i n a l s
Condition Signal (V)
(Reference value)
(+) (–)
M70 Intelligent
Key unit 13 Ground Ignition
switch is
pushed.
ALKIA0583ZZPIIB7441E
Intelligent Key
unit connector
Te r m i n a l sInside key antenna
3 (front of center
console) connector Terminals Continuity
A: M70 13
B: M210 1
Ye s
14 2
ALKIA0584ZZ
Revision: December 20092009 QX56

DLK-66
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INSIDE KEY ANTENNA 4
(OVERHEAD CONSOLE AREA)
INSIDE KEY ANTENNA 4 (OVERHEAD CONSOLE AREA)
DescriptionINFOID:0000000003775723
Detects whether Intelligent Key is inside the vehicle.
Component Function CheckINFOID:0000000003775724
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL
With CONSULT-III
1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.
2. Touch “INSIDE KEY ANTENNA 4”.
3. When Intelligent Key is inside key antenna (over head console area) detection area, hazard lamps flash.
Is the inspection result normal?
YES >> Inside key antenna 4 (overhead console area) is OK.
NO >> Refer to DLK-66, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775725
1.CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL
1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.
Is the inspection result normal?
YES >> Inside key antenna 4 (overhead console area) is OK.
NO >> GO TO 2
2.CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector and inside key antenna 4 (overhead console area) connectors.
2. Check continuity between Intelligent Key unit harness connector (A) M70 terminals 33, 34 and inside key antenna 4 (overhead console area) harness connector (B) R210 terminals 1, 2.
3. Check continuity between Inte lligent Key unit harness connector
(A) M70 terminals 33, 34 and ground.
Test Item Condition Possible cause
INSIDE KEY ANTENNA 4 An excessive high or low voltage from inside
antenna is sent to the Intelligent Key Unit • Inside key antenna 4 (overhead console area)
• Between Intelligent Key unit and inside key antenna 4
(overhead console area)
Connector Item Te r m i n a l s
Condition Signal (V)
(Reference value)
(+) (–)
M70 Intelligent
Key unit 33 Ground Ignition
switch is
pushed.
ALKIA0589ZZPIIB7441E
Intelligent Key
unit connector
Te r m i n a l sInside key antenna
4 (overhead console
area) connector Terminals Continuity
A: M70 33
B: R210 1
Ye s
34 2
ALKIA0590ZZ
Revision: December 20092009 QX56

DLK-68
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
INTELLIGENT KEY UNIT
INTELLIGENT KEY UNIT
: Diagnosis ProcedureINFOID:0000000003775726
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit harness connector M70 terminals 6, 11 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace Intelligent Key unit power supply circuit.
2.CHECK GROUND CIRCUIT
Check continuity between Intelligent Key unit harness connector
M70 terminal 12 and ground.
Is the inspection result normal?
YES >> Power supply and ground circuits are OK.
NO >> Repair or replace the Intelligent Key unit ground circuit.
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis ProcedureINFOID:0000000004190660
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
Connector Terminals Ignition switch position
M70 (+) (–) OFF
ON
6 Ground 0V Battery voltage
11 Battery voltage Battery voltage
WIIA1171E
12 - Ground : Continuity should exist.
WIIA1172E
Terminal No. Signal nameFuses and fusible link No.
57 Battery power supply 22 (15A)
70 F (50A)
11 Ignition ACC or ON 4 (10A)
38 Ignition ON or START 59 (10A)
Revision: December 20092009 QX56

DLK-74
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
DOOR LOCK AND
UNLOCK SWITCH
DRIVER SIDE
DRIVER SIDE : DescriptionINFOID:0000000003775732
Transmits door lock/unlock operation to BCM.
DRIVER SIDE : Component Function CheckINFOID:0000000003775733
1.CHECK FUNCTION
With CONSULT-III
Check CDL LOCK SW, CDL UNLOCK SW in Data Monitor mode with CONSULT-III.
Is the inspection result normal?
YES >> Door lock and unlock switch is OK.
NO >> Refer to DLK-74, "
DRIVER SIDE : Diagnosis Procedure".
DRIVER SIDE : Diagnosis ProcedureINFOID:0000000004190667
1.CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
With CONSULT-III
Check main power window and door lock/unlock switch ("CDL LOCK SW", "CDL UNLOCK SW") in DATA
MONITOR mode in CONSULT–III.
• When main power window and door lock/unlock switch is turned to LOCK:
• When main power window and door lock/unlock switch is turned to UNLOCK:
Without CONSULT-III
1. Remove key from ignition key cylinder.
2. Using an oscilloscope, check the signal between BCM connector M18 terminal 22 and ground when the main power window and door lock/unlock switch is turned to LOCK or UNLOCK.
3. Make sure the signals which are shown in the figur e below can be detected during 10 seconds just after
the door lock/unlock switch is turned to LOCK or UNLOCK.
Is the inspection result normal?
YES >> Door lock and unlock switch circuit is OK.
Monitor item Condition
CDL LOCK SW LOCK
: ON
UNLOCK : OFF
CDL UNLOCK SW LOCK
: OFF
UNLOCK : ON
CDL LOCK SW :ON
CDL UNLOCK SW :ON
ConnectorTe r m i n a l
Voltage (V)
( + ) ( – )
M18 22 Ground
PIIA6379EPIIA1297E
Revision: December 20092009 QX56