Ignition switch removal INFINITI QX56 2008 Factory Service Manual

PB-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004873079
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000004873080
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

PCS-32
< PRECAUTION >[IPDM E/R]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint Syst
em (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004857510
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000004857511
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

PG-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004913900
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000004913899
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

POWER SUPPLY AND GROUND CIRCUITPWC-13
< COMPONENT DIAGNOSIS >
C
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B
PWC
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Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between main power window and door lock/ unlock switch connector and ground.
Is the inspection result normal?
YES >> Replace main power window and door lock/unlock switch. Refer to PWC-115, "
Removal and Installation".
NO >> Repair or replace harness.
4. CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector and ground.
Is the measurement value within the specification?
YES >> Replace BCM. Refer to BCS-55, "Removal and Installation".
NO >> Repair or replace harness.
FRONT POWER WINDOW SWITCH
FRONT POWER WINDOW SWITCH : DescriptionINFOID:0000000001735654
• BCM supplies power.
• Front power window motor RH will be operated if power window and door lock/unlock switch RH is operated.
FRONT POWER WINDOW SWITCH : Component Function CheckINFOID:0000000001735655
Power Window And Door Lock/Unlock Switch RH
1. CHECK FRONT POWER WINDOW MOTOR RH FUNCTION
Does front power window motor RH operate with power window and door lock/unlock switch RH operation?
Is the inspection result normal?
YES >> Power window and door lock/unlock switch RH power supply and ground circuit are OK.
NO >> Refer to PWC-13, "
FRONT POWER WINDOW SWITCH : Diagnosis Procedure".
FRONT POWER WINDOW SWIT CH : Diagnosis ProcedureINFOID:0000000001735656
Power Window And Door Lock/Unlock Switch RH Power Supply Circuit Check
BCM connectorTerminal
GroundContinuity
M20 (A) 68
No
69
Main power window and door lock/
unlock switch connector Te r m i n a l
GroundContinuity
D8 17 Yes
ALKIA0275ZZ
Te r m i n a l s
Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M20 68
Ground Battery voltage
69
LIIA0917E
Revision: March 2010 2008 QX56

PWC-14
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between power window and door lock/unlock switch RH connector and ground.
Is the measurement value within the specification?
YES >> GO TO 3
NO >> GO TO 2
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and power window and door lock/unlock switch RH.
3. Check continuity between BCM connector (A) and power win- dow and door lock/unlock switch RH connector (B).
4. Check continuity between BCM connector (A) and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power window and door lock/unlock switch RH.
3. Check continuity between power window and door lock/unlock switch RH connector and ground.
Is the inspection result normal?
YES >> Replace power window and door lock/unlock switch RH. Refer to PWC-116, "
Removal and Installation".
NO >> Repair or replace harness.
4. CHECK BCM OUTPUT SIGNAL
Te r m i n a l
Voltage (V)(Approx.)
(+)
(–)
Power window and door lock/
unlock
switch RH connector Te r m i n a l
D105 10Ground Battery voltage
ALKIA0301ZZ
BCM connector Terminal Power window and
door lock/unlock
switch RH connector Terminal Continuity
M20 (A) 69 D105 (B) 10 Yes
BCM connector Terminal GroundContinuity
M20 (A) 69 No
LIIA2364E
Power window and door
lock/unlock switch RH Te r m i n a l
Ground Continuity
D105 11 Yes
ALKIA0303ZZ
Revision: March 2010 2008 QX56

POWER SUPPLY AND GROUND CIRCUITPWC-15
< COMPONENT DIAGNOSIS >
C
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G H
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M A
B
PWC
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1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector and ground.
Is the measurement value within the specification?
YES >> Replace power window and door lock/unlock switch RH.
Refer to PWC-116, "
Removal and Installation".
NO >> Replace BCM. Refer to BCS-55, "
Removal and Installation".
REAR POWER WINDOW SWITCH
REAR POWER WINDOW SWITCH : DescriptionINFOID:0000000001735657
• BCM supplies power.
• Rear power window motor will be operated if rear power window switch is operated. Rear power window\
switch.
REAR POWER WINDOW SWITCH : Component Function CheckINFOID:0000000001735658
Rear Power Window Switch
1. CHECK REAR POWER WINDOW MOTOR FUNCTION
Does rear power window motor operate with rear power window switch operation?
Is the inspection result normal?
YES >> Rear power window switch power supply and ground circuit are OK.
NO >> Refer to PWC-15, "
REAR POWER WINDOW SWITCH : Diagnosis Procedure".
REAR POWER WINDOW SWITCH : Diagnosis ProcedureINFOID:0000000001735659
Rear Power Window Switch Power Supply Circuit Check
1. CHECK POWER WINDOW POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window switch LH or RH.
3. Turn ignition switch ON.
4. Check voltage between rear power window switch LH or RH connector D203 (LH), D303 (RH) terminals 2, 3 and ground.
OK or NG
OK >> GO TO 2
NG >> Repair or replace harness.
2. CHECK POWER WINDOW GROUND CIRCUIT
Te r m i n a l s Voltage (V)
(Approx.)
(+)
(-)
BCM connector Terminal
M20 69Ground Ba ttery voltage
WIIA0508E
2 - Ground : Battery voltage
3 - Ground : Battery voltage
LIIA1348E
Revision: March 2010 2008 QX56

PWC-16
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window switch LH or RH.
3. Check continuity between rear power window switch LH or RHconnector D203 (LH), D303 (RH) terminals 1, 7 and ground.
OK or NG
OK >> GO TO 3
NG >> Repair or replace harness.
3. CHECK REAR POWER WINDOW SWITCH
Check rear power window switch.
Refer to PWC-16, "
REAR POWER WINDOW SWITCH : Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-38, "Intermittent Incident".
NO >> Replace rear power window switch. Refer to PWC-117, "
Removal and Installation".
REAR POWER WINDOW SWITCH : Component InspectionINFOID:0000000001735660
COMPONENT INSPECTION
1.CHECK REAR POWER WINDOW SWITCH
Check rear power window switch.
Is the inspection result normal?
YES >> Rear power window switch is OK.
NO >> Replace rear power window switch. Refer to PWC-117, "
Removal and Installation".
1 - Ground : Continuity should exist.
7 - Ground : Continuity should exist.
LIIA2044E
Terminal Power window switch condition Continuity
25 UP
Ye s
14
14
NEUTRAL
15
24 DOWN
15
ALKIA0289ZZ
Revision: March 2010 2008 QX56

POWER WINDOW MOTORPWC-17
< COMPONENT DIAGNOSIS >
C
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G H
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M A
B
PWC
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POWER WINDOW MOTOR
DRIVER SIDE
DRIVER SIDE : DescriptionINFOID:0000000001735661
Door glass moves UP/DOWN by receiving the signal from power window main switch.
DRIVER SIDE : Componen t Function CheckINFOID:0000000001735662
1. CHECK POWER WINDOW MOTOR CIRCUIT
Does front power window motor LH operate with operating main power window and door lock/unlock switch?
Is the inspection result normal?
YES >> Front power window motor LH is OK.
NO >> Refer to PWC-17, "
DRIVER SIDE : Diagnosis Procedure".
DRIVER SIDE : Diag nosis ProcedureINFOID:0000000001735663
Front Power Window Motor LH Circuit Check
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL
1. Disconnect front power window motor LH.
2. Turn ignition switch ON.
3. Check voltage between front power window motor LH connector and ground.
Is the measurement value within the specification?
YES >> GO TO 2
NO >> Replace main power window and door lock/unlock switch. Refer to PWC-115, "
Removal and
Installation".
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and front power window motor LH.
3. Check continuity between main power window and door lock/ unlock switch connector (A) and front power window motor con-
nector LH (B).
4. Check continuity between main power window and door lock/unlock switch connector (A) and ground.
Te r m i n a l Main power win-
dow and door lock/ unlock switch con- dition Voltage (V)
(Approx.)
(+)
(–)
Power window
motor LH con-
nector Te r m i n a l
D9 2
Ground UP Battery voltage
DOWN 0
1 UP
0
DOWN Battery voltage
ALKIA1302ZZ
Main power window
and door lock/unlock switch connector Te r m i n a lFront power win-
dow motor LH con- nector Terminal Continuity
D7 (A) 8
D9 (B) 2
Ye s
11 1
ALKIA1019ZZ
Revision: March 2010 2008 QX56

POWER WINDOW MOTORPWC-19
< COMPONENT DIAGNOSIS >
C
DE
F
G H
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J
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M A
B
PWC
N
O P
1. Disconnect front power window motor RH.
2. Turn ignition switch ON.
3. Check voltage between front power window motor RH connector and ground.
Is the measurement value within the specification?
YES >> GO TO 2
NO >> Replace power window and door lock/unlock switch RH. Refer to PWC-116, "
Removal and Instal-
lation".
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect power window and door lock/unlock switch RH.
3. Check continuity between power window and door lock/unlock switch RH connector (A) and front power window motor RH con-
nector (B).
4. Check continuity between power window and door lock/unlock switch RH connector (A) and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK FRONT POWER WINDOW MOTOR RH
Check front power window motor RH.
Refer to PWC-19, "
PASSENGER SIDE : Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-38, "Intermittent Incident".
NO >> Replace front power window motor RH. Refer to GW-9, "
Removal and Installation".
PASSENGER SIDE : Component InspectionINFOID:0000000001735668
COMPONENT INSPECTION
1. CHECK FRONT POWER WINDOW MOTOR RH
Does motor operate by connecting the battery voltage directly to front power window motor RH?
Te r m i n a l Front power
window motor RH condition Voltage (V)
(Approx.)
(+)
(–)
Front power window
motor RH connector Te r m i n a l
D104 2
Ground UP Battery voltage
DOWN 0
1 UP
0
DOWN Battery voltage
ALKIA1302ZZ
Power window and door lock/unlock
switch RH connector Te r m i n a l
Front power window
motor RH connector
Terminal Continuity
D105 (A) 8
D104 (B) 2
Ye s
91
Power window and door
lock/unlock switch RH con- nector Terminal
Ground Continuity
D105 (A) 8
No
9
ALKIA1020ZZ
Revision: March 2010 2008 QX56

PWC-20
< COMPONENT DIAGNOSIS >
POWER WINDOW MOTOR
Is the inspection result normal?
YES >> Front power window motor RH is OK.
NO >> Replace front power window motor RH. Refer to GW-9, "
Removal and Installation".
REAR LH
REAR LH : DescriptionINFOID:0000000001735669
Door glass moves UP/DOWN by receiving the signal from power window main switch or rear power window
switch LH.
REAR LH : Componen t Function CheckINFOID:0000000001735670
1. CHECK REAR POWER WINDOW MOTOR LH CIRCUIT
Does rear power window motor LH operate with main power window and door lock/unlock switch or rear
power window switch LH?
Is the inspection result normal?
YES >> Rear power window motor LH is OK.
NO >> Refer to PWC-20, "
REAR LH : Diagnosis Procedure"
REAR LH : Diagnosis ProcedureINFOID:0000000001735671
Power Window Motor Circuit Check
1. CHECK REAR POWER WINDOW SWITCH LH OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between rear power window switch LH connector D203 terminals 4, 5 and ground.
OK or NG
OK >> Replace rear power window switch LH. Refer to PWC-117, "Removal and Installation".
NG >> GO TO 2
2. CHECK REAR POWER WINDOW SWITCH LH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window switch LH and rear power win- dow control unit LH.
3. Check continuity between rear power window switch LH connec- tor D203 terminals 4, 5 and rear power window control unit LH
connector D209 terminals 9, 10.
OK or NG
Te r m i n a l Motor condition
(+) (–)
12 D OW N
21 U P
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
D203 4
Ground Closing
0
Opening Battery voltage
5 Closing Battery voltage
Opening 0
LIIA2365E
4 - 9 : Continuity should exist.
5 - 10 : Continuity should exist.
LIIA1379E
Revision: March 2010 2008 QX56