BATTERY CONNECTORS INFINITI QX56 2011 Factory Service Manual

WCS
PRECAUTIONSWCS-3
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006369725
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 severi ty 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g 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 unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric 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 minutes before performing any service.
Revision: 2010 May2011 QX56

PRECAUTIONSWT-3
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006256474
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 severi ty 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g 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 unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric 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 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation after Battery Disconnect
INFOID:0000000006256475
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect both battery cables.
 After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnos is according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the batte ry disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wil l remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
Revision: 2010 May2011 QX56

POWER SUPPLY AND GROUND CIRCUITWT-51
< DTC/CIRCUIT DIAGNOSIS >
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POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000006225530
1.CHECK FUSE/FUSIBLE LINK
1. Turn the ignition switch OFF.
2. Check for fusing of the fuse and fusible link at the low tire pressure warning control unit.
- Check the 10 A fuse [No. 3 in fuse block (J/B)]
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT POWER SUPPLY CIRCUIT
1. Disconnect the low tire pressure warning control unit harness connector.
2. Turn the ignition switch ON. CAUTION:
Never start engine.
3. Check the voltage between the low tire pressure warning control unit and ground.
4. Turn the ignition switch OFF.
5. Check the voltage between the low tire pressure warning control unit and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check the following. If any items are damaged, repair or replace damaged parts.  Harness for short or open between ignition switch and low tire pressure warning control unit har-ness connector
 Battery voltage.
3.CHECK LOW TIRE PRESSURE WARNI NG CONTROL UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Check the continuity between the low tire pressure warning control unit harness connector and ground.
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
Low tire pressure warning control unit —Voltage
Connector Terminal
M96 15 Ground Battery voltage
Low tire pressure warning control unit —Voltage
Connector Terminal
M96 15 Ground 0 V
Low tire pressure warning control unit —Continuity
Connector Terminal
M96 32 Ground Existed
Revision: 2010 May2011 QX56

PRECAUTIONSWW-3
< PRECAUTION >
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O P
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006349780
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 severi ty 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g 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 unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric 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 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation after Battery Disconnect
INFOID:0000000006300446
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect both battery cables.
 After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnos is according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the batte ry disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wil l remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
Revision: 2010 May2011 QX56

HEADLAMP WASHER CIRCUITWW-47
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HEADLAMP WASHER CIRCUIT
Component Function CheckINFOID:0000000006371495
1.CHECK HEADLAMP WASHER OPERATION
CONSULT-III ACTIVE TEST
1. Select “HEAD LAMP WASHER” of IPDM E/R active test item.
2. With operating the test item, check headlamp operation.
Is headlamp washer operation normally?
YES >> Headlamp washer circuit is normal.
NO >> Refer to WW-47, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006371496
1.CHECK HEADLAMP WASHER FUSIBLE LINK
1. Turn the ignition switch OFF.
2. Check that the headlamp washer 30A fusible link (#U) is not fusing.
Is the fusible link fusing?
YES >> Replace the fusible link after repairing the applicable circuit.
NO >> GO TO 2.
2.CHECK HEADLAMP WASHER RELAY POWER SUPPLY
1. Remove headlamp washer relay.
2. Check voltage between headlamp washer relay harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harnesses or connectors.
3.CHECK HEADLAMP WASHER RELAY
Check headlamp washer relay. Refer to WW-46, "
Component Inspection".
Is the headlamp washer relay normal?
YES >> GO TO 4.
NO >> Replace headlamp washer relay.
4.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL
CONSULT-III ACTIVE TEST
1. Turn the ignition switch OFF.
2. Install headlamp washer relay.
3. Turn the ignition switch ON.
4. Select “HEAD LAMP WASHER” of IPDM E/R active test item.
5. With operating the test item, check vo ltage between IPDM E/R harness connector and ground.
On :Headlamp washer ON operation
Off :Stop the headlamp washer.
(+)
(− ) Voltage (Approx.)
Headlamp washer relay
Connector Terminal
E51 1
Ground Battery voltage
3
(+)
(− ) Te s t i t e m
Voltage (Approx.)
IPDM E/R
HEAD LAMP WASHER
Connector Terminal
Revision: 2010 May2011 QX56

WW-48
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP WASHER CIRCUIT
Is the measurement value normal?
YES >> GO TO 7.
Fixed at 0 V >> GO TO 5.
Fixed at battery voltage >>Replace IPDM E/R.
5.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Remove headlamp washer relay.
3. Disconnect IPDM E/R harness connector.
4. Check continuity between IPDM E/R harness c onnector and headlamp washer relay harness connector.
Does continuity exist?
YES >> GO TO 6.
NO >> Repair the harnesses or connectors.
6.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL SHORT CIRCUIT
Check continuity between IPDM E/R harness connector and ground.
Does continuity exist?
YES >> Repair the harnesses or connectors.
NO >> Replace IPDM E/R.
7.CHECK HEADLAMP WASHER PUMP OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Remove headlamp washer relay.
3. Disconnect headlamp washer pump connector.
4. Check continuity between headlamp washer re lay harness connector and headlamp washer pump har-
ness connector.
Does continuity exist?
YES >> GO TO 8.
NO >> Repair the harnesses or connectors.
8.CHECK HEADLAMP WASHER PUMP (GND) OPEN CIRCUIT
Check continuity headlamp washer pump harness connector and ground.
Does continuity exist?
YES >> Replace headlamp washer pump.
NO >> Repair the harnesses or connectors.
E12 21 Ground On 0 V
Off Battery voltage
IPDM E/R Headlamp washer relay Continuity
Connector Terminal Connector Terminal
E12 21 E51 2 Existed
IPDM E/R GroundContinuity
Connector Terminal
E12 21 Not existed
Headlamp washer relay Headlamp washer pump Continuity
Connector Terminal Connector Terminal
E51 5 E41 1 Existed
Headlamp washer pump GroundContinuity
Connector Terminal
E41 2 Existed
Revision: 2010 May2011 QX56