battery INFINITI QX56 2010 Factory Service Manual

KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
DLK-113
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
Diagnosis ProcedureINFOID:0000000005146990
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK KEY SWITCH
With CONSULT-III
Check key switch (“KEY SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit harness connector.
3. Check voltage between Intelligent Key unit harness connector M70 terminal 7 and ground.
Is the inspection result normal?
YES >> Key switch is OK.
NO >> GO TO 2
2.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from ignition switch.
2. Disconnect key switch and i gnition knob switch connector.
3. Check voltage between key switch and ignition knob switch harness connector M12 terminal 3 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace key switch and ignition knob switch power supply circuit.
3.CHECK KEY SWITCH OPERATION
Monitor item Condition
KEY SW Insert mechanical key into ignition switch: ON
Remove mechanical key from ignition switch: OFF
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M70 7 Ground Insert mechanical key
into ignition switch
Battery voltage
Remove mechanical
key from ignition switch 0
WIIA1173E
3 - Ground
: Battery voltage
PIIB4254E
Revision: April 20092010 QX56

KEY SWITCH (BCM INPUT)DLK-115
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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KEY SWITCH (BCM INPUT)
Diagnosis ProcedureINFOID:0000000005146991
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from ignition switch.
2. Disconnect key switch and i gnition knob switch connector.
3. Check voltage between key switch and ignition knob switch har- ness connector M12 terminal 3 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check harness between key switch and ignition knob switch and fuse.
2.CHECK KEY SWITCH
Check continuity between key switch and ignition knob switch termi-
nals 3 and 4.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace key cylinder assembly (built-in key switch).
3.CHECK KEY SWITCH SIGNAL CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M18 terminal 37 and key switch and ignition knob switch harness connector
M12 terminal 4.
3. Check continuity between BCM harness connector M18 terminal 37 and ground.
Is the inspection result normal?
YES >> Key switch (BCM input) circuit is OK.
NO >> Repair or replace harness between key switch and ignition knob switch and BCM. 3 – Ground
: Battery voltage.
PIIB4254E
Component Terminals ConditionContinuity
Ignition switch 34 Insert mechanical key
into ignition switch.
Ye s
Remove mechanical key
from ignition switch. No
PIIA6140E
37 – 4
: Continuity should exist.
37 – Ground : Continuity should not exist.
PIIB4256E
Revision: April 20092010 QX56

DLK-116
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
IGNITION KNOB SWITCH
IGNITION KNOB SWITCH
Diagnosis ProcedureINFOID:0000000005146992
Regarding Wiring Diagram information, refer to
DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK IGNITION KNOB SWITCH
With CONSULT-III
Display “PUSH SW” on DATA MONITOR screen, and check if ON/OFF display is linked to ignition switch oper-
ation.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit harness connector M70 terminal 27 and ground.
Is the inspection result normal?
YES >> Ignition knob switch is OK.
NO >> GO TO 2
2.CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch harness connector M12 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace key switch and ignition knob switch power supply circuit.
3.CHECK IGNITION KNOB SWITCH OPERATION
Check continuity between key switch and ignition knob switch terminals 1 and 2.
Monitor item Condition
PUSH SW Ignition switch is pushed: ON
Ignition switch is released: OFF
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M70 27 Ground Ignition switch is
pushed
Battery voltage
Ignition switch is re-
leased 0
WIIA1175E
1 - Ground
: Battery voltage
PIIB4257E
Revision: April 20092010 QX56

POWER LIFTGATE SWITCH FUNCTIONDLK-125
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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POWER LIFTGATE SWITCH FUNCTION
Diagnosis ProcedureINFOID:0000000005146998
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.POWER LIFTGATE SWITCH FUNCTION INSPECTION
Check power liftgate switch using switch operation.
Did the back door respond correctly?
YES >> Power liftgate switch is OK.
NO >> GO TO 2
2.POWER LIFTGATE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the power liftgate switch, check voltage between back door control unit connector B55 terminal 23 and
ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.POWER LIFTGATE SWITCH CIRCUIT INSPECTION
1. Disconnect back door control unit and power liftgate switch connectors.
2. Check continuity between back door control unit connector (A) B55 terminal 23 and power liftgate switch connector (B) M92 ter-
minal 1.
3. Check continuity between back door control unit connector (A) B55 terminal 23 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the power liftgate switch and the back door control unit.
4.POWER LIFTGATE SWITCH GROUND INSPECTION
Te r m i n a l Measuring condition Voltage (V)
(Approx.)
(+) (-)
23 GroundPower liftgate
switch ON
0
OFF Battery voltage
LIIA0802E
23 - 1 : Continuity should exist.
23 - Ground : Continuity should not exist.
ALKIA0670ZZ
Revision: April 20092010 QX56

DLK-126
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
POWER LIFTGATE SWITCH FUNCTION
Check continuity between power liftgate switch connector terminal 2
and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair the harness between the power liftgate switch
and ground.
5.POWER LIFTGATE SWITCH POWE R SUPPLY CIRCUIT INSPECTION
1. Reconnect back door control unit.
2. Ensure liftgate is closed.
3. Check voltage between power liftgate switch connector M92 ter- minal 1 and ground.
Is the inspection result normal?
YES >> Replace the power liftgate switch.
NO >> Replace the back door control unit. 2 - Ground
: Continuity should exist.
LIIA1065E
1 - Ground :Approx. battery voltage
LIIA1063E
Revision: April 20092010 QX56

GLASS HATCH AJAR SWITCHDLK-129
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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GLASS HATCH AJAR SWITCH
Diagnosis ProcedureINFOID:0000000005147000
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.CHECK GLASS HATCH AJAR SWITCH INPUT SIGNAL
With CONSULT-III
Check glass hatch ajar switch ("TRNK OPN MNTR") in DATA MONITOR mode with CONSULT–III.
• When glass hatch is open:
• When glass hatch is closed:
Without CONSULT-III
Check voltage between BCM connector M19 terminal 42 and ground.
Is the inspection result normal?
YES >> System is OK.
NO >> GO TO 2
2.CHECK GLASS HATCH AJAR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect glass hatch ajar switch, BCM and back door control unit.
3. Check continuity between BCM connector (A) M19 te rminal 42 and glass hatch ajar switch connector (C)
D707 terminal 1.
4. Check continuity between back door control unit connector B55
(B) terminal 17 and glass hatch ajar switch connector (C) D707
terminal 1.
5. Check continuity between glass hatch ajar switch connector (C) D707 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK GLASS HATCH AJAR SWITCH
1. Disconnect glass hatch ajar switch connector. TRNK OPN MNTR : ON
TRNK OPN MNTR : OFF
Connector Item
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M19 BCM 42 Ground Open
↓
Closed 0
↓
Battery voltage
LIIA1149E
42 - 1 : Continuity should exist.
17 - 1 : Continuity should exist.
1 - Ground : Continuity should not exist.
ALKIA0667ZZ
Revision: April 20092010 QX56

BACK DOOR CLOSE (CLOSE) SWITCH SYSTEM
DLK-131
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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BACK DOOR CLOSE (C LOSE) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000005147001
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.BACK DOOR CLOSE SWITCH FUNCTION INSPECTION
Check back door close (close) s witch using switch operation.
Is the inspection result normal?
YES >> Back door close switch is OK.
NO >> GO TO 2
2.BACK DOOR CLOSE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door close switch, check voltage between back door control unit connector B55 terminal 8 and
ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.BACK DOOR CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door close switch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 8 and back door close switch connector (B) B63
terminal 1.
3. Check continuity between back door control unit connector (A) B55 terminal 8 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the back door close switch and the back door control unit.
4.BACK DOOR CLOSE SWITCH GROUND INSPECTION
Te r m i n a l s
Measuring condition Voltage (V)
(Approx.)
(+) (-)
8G ro u nd Back door
close switch ON
0
OFF Battery voltage
LIIA0805E
8 - 1 : Continuity should exist.
8 - Ground : Continuity should not exist.
ALKIA0669ZZ
Revision: April 20092010 QX56

DLK-140
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR SWITCH
BACK DOOR SWITCH
Diagnosis ProcedureINFOID:0000000005147008
Regarding Wiring Diagram information, refer to
DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.BACK DOOR AND GLASS HATCH SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door and glass hatch switch assembly (back door switch), check voltage between back door control
unit connector B55 terminal 26 and ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 2
2.BACK DOOR AND GLASS HAT CH SWITCH CIRCUIT INSPECTION
1. Disconnect back door and glass hatch switch assemb ly (back door switch) and back door control unit.
2. Check continuity between back door control unit connector (A) B55 terminal 26 and back door and glass hatch switch assembly
(back door switch) connector (B) D706 terminal 3.
3. Check continuity between back door control unit connector (A) B55 terminal 26 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair the harness between the back door and gla ss hatch switch assembly (back door switch)
and the back door control unit.
3.BACK DOOR AND GLASS HAT CH SWITCH GROUND INSPECTION
Check continuity between back door and glass hatch switch assem-
bly (back door switch) connector D706 terminal 4 and ground.
Is the inspection result normal?
YES >> Replace the back door and glass hatch switch assembly (back door switch).
NO >> Repair the harness between the back door and glass hatch switch assembly (back door switch) and ground.
Te r m i n a l Measuring condition Voltage (V)
(Approx.)
(+) (-)
26 GroundPush the back door and glass
hatch switch assembly (back
door switch) (ON) 0
Other (OFF) Battery voltage
LIIA0833E
26 - 3 : Continuity should exist.
26 - Ground : Continuity should not exist.
ALKIA1791ZZ
4 - Ground : Continuity should exist.
ALKIA1792ZZ
Revision: April 20092010 QX56

CINCH LATCH MOTOR SYSTEMDLK-141
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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CINCH LATCH MOTOR SYSTEM
Diagnosis ProcedureINFOID:0000000005147009
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.CINCH LATCH MOTOR SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit c onnector B55 terminals 11, 12
and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Replace the back door control unit.
2.CINCH LATCH MOTOR CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminals 11, 12 and back door latch (cinch latch motor)
connector D705 (B) terminals 1, 2.
3. Check continuity between back door control unit connector (A) B55 terminals 11, 12 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair the harness between the back door latch (cinch latch motor) and the back door control unit.
3.CINCH LATCH MOTOR OPERATION INSPECTION
Connect battery power to terminals 1 and 2 on the back door latch
connector and check motor operation.
Is the inspection result normal?
YES >> Motor is OK.
NO >> Replace the back door latch.
11 - Ground
12 - Ground Battery voltage
LIIA2397E
11 - 2
: Continuity should exist.
12 - 1 : Continuity should exist.
11 - Ground : Continuity should not exist.
12 - Ground : Continuity should not exist.
ALKIA0679ZZ
1 (+) - 2 (-) : It operates.
1 (-) - 2 (+) : It operates. (Reverse rotation)
LIIA0838E
Revision: April 20092010 QX56

HOMELINK UNIVERSAL TRANSCEIVERDLK-145
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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DescriptionINFOID:0000000005147015
Homelink universal transceiver can store and transmit a maximum of 3 radio signals.
Allows operation of garage doors, gates, home and office lighting, entry door locks and security system, etc.
Homelink universal transceiver power supply uses vehicle battery, which enables it to maintain every program
in case battery is discharged or removed.
ABKIA0056GB
Revision: April 20092010 QX56