wiring diagram INFINITI QX56 2010 Factory Service Manual

DLK-62
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
LUGGAGE AREA ANTENNA
LUGGAGE AREA ANTENNA
DescriptionINFOID:0000000005146914
Detects whether Intelligent Key is inside the vehicle.
Component Function CheckINFOID:0000000005146915
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL
With CONSULT-III
1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.
2. Touch “ROOM ANT1”.
3. When Intelligent Key is in luggage area antenna detection area, hazard lamps flash.
Is the inspection result normal?
YES >> Luggage area antenna is OK.
NO >> Refer to DLK-62, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146916
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
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 >> Luggage area antenna is OK.
NO >> GO TO 2
2.CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector and luggage area antenna connectors.
2. Check continuity between Intelligent Key unit harness connector (A) M70 terminals 35, 36 and luggage
area antenna harness connector (B) B76 terminals 1, 2.
Test Item Condition Possible cause
ROOM ANT1 An excessive high or low voltage from inside
antenna is sent to the Intelligent Key Unit • Luggage area antenna
• Between Intelligent Key unit and luggage area antenna
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
Revision: April 20092010 QX56

DLK-64
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
CENTER CONSOLE AREA ANTENNA (FRONT)
CENTER CONSOLE AREA ANTENNA (FRONT)
DescriptionINFOID:0000000005146917
Detects whether Intelligent Key is inside the vehicle.
Component Function CheckINFOID:0000000005146918
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL
With CONSULT-III
1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.
2. Touch “ROOM ANT2”.
3. When Intelligent Key is in center console area antenna (front) detection area, hazard lamps flash.
Is the inspection result normal?
YES >> Center console area antenna (front) is OK.
NO >> Refer to DLK-64, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146919
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
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 >> Center console area antenna (front) is OK.
NO >> GO TO 2
2.CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector and c enter console area antenna (front) connectors.
2. Check continuity between Intelligent Key unit harnes s connector (A) M70 terminals 13, 14 and center con-
sole area antenna (front) harness connector (B) M210 terminals 1, 2.
Test Item Condition Possible cause
ROOM ANT2 An excessive high or low voltage from inside
antenna is sent to the Intelligent Key Unit • Center console area antenna (front)
• Between Intelligent Key unit and center console area an-
tenna (front)
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
Revision: April 20092010 QX56

DLK-66
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
OVERHEAD CONSOLE AREA ANTENNA
OVERHEAD CONSOLE AREA ANTENNA
DescriptionINFOID:0000000005146920
Detects whether Intelligent Key is inside the vehicle.
Component Function CheckINFOID:0000000005146921
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL
With CONSULT-III
1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.
2. Touch “ROOM ANT2”.
3. When Intelligent Key is in overhead consol e area antenna detection area, hazard lamps flash.
Is the inspection result normal?
YES >> Overhead console area antenna is OK.
NO >> Refer to DLK-66, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146922
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
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 >> Overhead console area antenna is OK.
NO >> GO TO 2
2.CHECK INSIDE KEY ANTENNA
1. Disconnect Intelligent Key unit connector and overhead console area antenna connectors.
2. Check continuity between Intelligent Key unit harness connector (A) M70 terminals 33, 34 and overhead console area antenna harness connector (B) R210 terminals 1, 2.
Test Item Condition Possible cause
ROOM ANT2 An excessive high or low voltage from inside
antenna is sent to the Intelligent Key Unit • Overhead console area antenna
• Between Intelligent Key unit and overhead console area
antenna
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
Revision: April 20092010 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:0000000005146923
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
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:0000000005380580
Regarding Wiring Diagram information, refer to BCS-49, "Wiring Diagram".
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
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: April 20092010 QX56

POWER SUPPLY AND GROUND CIRCUITDLK-69
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
BACK DOOR CONTROL UNIT
BACK DOOR CONTROL UNIT : Diagnosis ProcedureINFOID:0000000005146925
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.BACK DOOR POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect back door control unit connector.
Connector Te r m i n a l s
Power
source Condition Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or
ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch
OFF Battery voltage
LIIA2415E
BCM
GroundContinuity
Connector Terminal
M20 67 Yes
LIIA0915E
Revision: April 20092010 QX56

DOOR SWITCHDLK-71
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
DOOR SWITCH
DescriptionINFOID:0000000005146926
Detects door open/close condition.
Component Function CheckINFOID:0000000005146927
1.CHECK FUNCTIONWith CONSULT-III
Check door switches in data monitor mode with CONSULT-III.
Is the inspection result normal?
YES >> Door switch is OK.
NO >> Refer to DLK-71, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146928
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-III
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR
SW") in DATA MONITOR mode with CONSULT–III.
• When doors are open:
• When doors are closed:
Without CONSULT-III
Check voltage between BCM connector M18 or M19 terminals 12, 13, 43, 47, 48 and ground.
Monitor item Condition
DOOR SW-DR
CLOSE → OPEN: OFF → ON
DOOR SW-AS
DOOR SW-RL
DOOR SW-RR
BACK DOOR SW
DOOR SW-DR :ON
DOOR SW-AS :ON
DOOR SW-RL :ON
DOOR SW-RR :ON
BACK DOOR SW :ON
DOOR SW-DR :OFF
DOOR SW-AS :OFF
DOOR SW-RL :OFF
DOOR SW-RR :OFF
BACK DOOR SW :OFF
Revision: April 20092010 QX56

DLK-74
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
DOOR LOCK AND
UNLOCK SWITCH
DRIVER SIDE
DRIVER SIDE : DescriptionINFOID:0000000005146929
Transmits door lock/unlock operation to BCM.
DRIVER SIDE : Component Function CheckINFOID:0000000005146930
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:0000000005146931
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
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.
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
Revision: April 20092010 QX56

DLK-76
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
3. Check continuity between BCM connector M18 terminal 22 and ground.
Is the inspection result normal?
YES >> Replace main power window and door lock/unlock switch.
NO >> Repair or replace harness.
PASSENGER SIDE
PASSENGER SIDE : DescriptionINFOID:0000000005146932
Transmits door lock/unlock operation to BCM.
PASSENGER SIDE : Component Function CheckINFOID:0000000005146933
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-76, "
PASSENGER SIDE : Diagnosis Procedure".
PASSENGER SIDE : Diagnosis ProcedureINFOID:0000000005146934
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
22 - 14
: Continuity should exist.
LIIA0394E
22 - Ground: Continuity should not exist.
LIIA2359E
Monitor item Condition
CDL LOCK SW LOCK
: ON
UNLOCK : OFF
CDL UNLOCK SW LOCK
: OFF
UNLOCK : ON
Revision: April 20092010 QX56

KEY CYLINDER SWITCHDLK-79
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
KEY CYLINDER SWITCH
DescriptionINFOID:0000000005146935
The main power window and door lock/unlock switch det ects condition of the door key cylinder switch and
transmits to BCM as the LOCK or UNLOCK signal.
Component Function CheckINFOID:0000000005146936
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Check "KEY CYL LK-SW" AND "KEY CYL UN-SW" in DATA MONITOR mode for “POWER DOOR LOCK
SYSTEM” with CONSULT-III.
Is the inspection result normal?
YES >> Key cylinder switch is OK.
NO >> Refer to DLK-79, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146937
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK DOOR KEY CYLINDER SWITCH LH
With CONSULT-III
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode with CONSULT–III.
• When key inserted in left front key cylinder is turned to LOCK:
• When key inserted in left front key cylinder is turned to UNLOCK:
Without CONSULT-III
Check voltage between main power window and door lock/unlock
switch connector D7 terminals 4, 6 and ground.
Is the inspection result normal?
Monitor item Condition
KEY CYL LK-SW Lock
: ON
Neutral / Unlock : OFF
KEY CYL UN-SW Unlock
: ON
Neutral / Lock : OFF
KEY CYL LK-SW : ON
KEY CYL UN-SW : ON
ConnectorTe r m i n a l s
Condition of left front key cylinder Voltage (V)
(Approx.)
(+) (–)
D7 4
Ground Neutral/Unlock
5
Lock 0
6 Neutral/Lock
5
Unlock 0
LIIA0566E
Revision: April 20092010 QX56

FRONT DOOR LOCK ACTUATOR LH (DOOR UNLOCK SENSOR)DLK-81
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
FRONT DOOR LOCK ACTUATOR LH (DOOR UNLOCK SENSOR)
DescriptionINFOID:0000000005146938
Detects door lock condition of driver door.
Component Function CheckINFOID:0000000005146939
1.CHECK FUNCTION
With CONSULT-III
Check door unlock sensor in DATA MONITOR mode.
Is the inspection result normal?
YES >> Door unlock sensor is OK.
NO >> Refer to DLK-81, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146940
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK UNLOCK SENSOR POWER SUPPLY
Check voltage between Intelligent Key unit connector terminal 28 and ground.
Is the inspection result normal?
YES >> Front door lock assembly LH (door unlock sensor) is OK.
NO >> GO TO 2
2.CHECK UNLOCK SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and front door lock assembly LH (door unlock sensor) connector.
3. Check continuity between Intelligent Key unit harness connector
(A) M70 terminal 28 and front door lock assembly LH (door
unlock sensor) harness connector (B) D14 terminal 4.
4. Check continuity between Intelligent Key unit harness connector (A) M70 terminal 28 and ground.
Is the inspection result normal?
YES >> GO TO 3
Monitor item Condition
DOOR STAT SW (DR DOOR STATE) Front door lock (driver side) LOCK : OFF
Front door lock (driver side) UNLOCK : ON
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M70 28 Ground Driver side door lock is locked 5
Driver side door lock is un-
locked
0
WIIA1190E
28 – 4
: Continuity should exist.
28 – Ground : Continuity should not exist.
WIIA1191E
Revision: April 20092010 QX56