INFINITI QX56 2009 Factory Service Manual

BCM (BODY CONTROL MODULE)INL-67
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Fail SafeINFOID:0000000004109555
Fail-safe index
BCM performs fail-safe control when any DTC listed below is detected.
ABMIA0024GB
Revision: December 20092009 QX56

INL-68
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
DTC Inspection Priority Chart
INFOID:0000000004109556
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000004109557
NOTE: Details of time display
• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-
tion switch OFF → ON again.
• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condition if the malfunction is detected again.
Display contents of CONS ULTFail-safe Cancellation
U1000: CAN COMM CIRCUIT I nhibit engine crankingWhen the BCM re-establishes communication with the other mod-
ules.
U1010: CONTROL UNIT (CAN) Inhibit engine cranking When the BCM re-start communicating with the other modules.
Priority DTC
1 • U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)
2 • B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM
• B2013: STRG COMM 1
• B2552: INTELLIGENT KEY
• B2590: NATS MALFUNCTION
3 • C1729: VHCL SPEED SIG ERR
• C1735: IGNITION SIGNAL
4 • C1704: LOW PRESSURE FL
• C1705: LOW PRESSURE FR
• C1706: LOW PRESSURE RR
• C1707: LOW PRESSURE RL
• C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)INL-69
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CONSULT display Fail-safeIntelligent Key
warning lamp ON Tire pressure
monitor warning lamp ON Reference page
No DTC is detected.
further testing
may be required. ————
U1000: CAN COMM CIRCUIT ———BCS-30
U1010: CONTROL UNIT (CAN) ———BCS-31
B2190: NATS ANTENNA AMP ———SEC-27
B2191: DIFFERENCE OF KEY ———SEC-30
B2192: ID DISCORD BCM-ECM ———SEC-31
B2193: CHAIN OF BCM-ECM ———SEC-33
B2552: INTELLIGENT KEY ———SEC-35
B2590: NATS MALFUNCTION ———SEC-36
C1704: LOW PRESSURE FL ———WT-26
C1705: LOW PRESSURE FR ———WT-26
C1706: LOW PRESSURE RR ———WT-26
C1707: LOW PRESSURE RL ———WT-26
C1708: [NO DATA] FL ———WT-14
C1709: [NO DATA] FR ———WT-14
C1710: [NO DATA] RR ———WT-14
C1711: [NO DATA] RL ———WT-14
C1712: [CHECKSUM ERR] FL ———WT-16
C1713: [CHECKSUM ERR] FR ———WT-16
C1714: [CHECKSUM ERR] RR ———WT-16
C1715: [CHECKSUM ERR] RL ———WT-16
C1716: [PRESSDATA ERR] FL ———WT-18
C1717: [PRESSDATA ERR] FR ———WT-18
C1718: [PRESSDATA ERR] RR ———WT-18
C1719: [PRESSDATA ERR] RL ———WT-18
C1720: [CODE ERR] FL ———WT-16
C1721: [CODE ERR] FR ———WT-16
C1722: [CODE ERR] RR ———WT-16
C1723: [CODE ERR] RL ———WT-16
C1724: [BATT VOLT LOW] FL ———WT-16
C1725: [BATT VOLT LOW] FR ———WT-16
C1726: [BATT VOLT LOW] RR ———WT-16
C1727: [BATT VOLT LOW] RL ———WT-16
C1729: VHCL SPEED SIG ERR ———WT-19
C1735: IGNITION SIGNAL ——— —
Revision: December 20092009 QX56

INL-70
< SYMPTOM DIAGNOSIS >
INTERIOR LIGHTING SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
INTERIOR LIGHTING SYSTEM SYMPTOMS
Symptom TableINFOID:0000000003776269
CAUTION:
Perform the self-diagnosis with CONSULT-III before the symptom diagnosis. Perform the trouble diag-
nosis if any DTC is detected.
Symptom Possible causeInspection item
All of the following lamps do not turn ON
• Front room/map lamp assembly
• Personal lamp 2nd and 3rd row
• Cargo room lamp
• Front and rear step lamps
• Vanity mirror lamps
• Ignition keyhole illumination
• Puddle lamps
•Foot lamps • Harness between BCM and each
interior room lamp
•BCM Battery saver output/power supply
circuit
Refer to
INL-15
.
Some or all of the following interior room lamps do not
turn ON/OFF
• Puddle lamps
• Front room/map lamp assembly
• Personal lamp 2nd row
• Personal lamp 3rd row • Harness between BCM and each
door switch
• Harness between BCM and each interior room lamp
•BCM Door switch circuit
Refer to
DLK-71
.
Interior room lamp control circuit
Refer to INL-17
.
Some or all of the following lamps do not turn ON/OFF
• Front step lamps
• Rear step lamps
•Foot lamps • Harness between BCM and step
lamps and foot lamps
•BCM Step lamp circuit
Refer to
INL-19
.
Cargo lamp does not turn ON/OFF • Harness between BCM and cargo
lamp
•BCM Cargo lamp co
ntrol circuit
Refer to INL-21
.
Ignition keyhole illumination does not turn ON/OFF • Harness between BCM and ignition
keyhole illumination
•BCM Ignition keyhole illumination control
circuit
Refer to
INL-23
.
Interior room lamp timer does not activate.
(It turns ON/ OFF when the door opens/closes.) —Check the interior room lamp setting.
Refer to
INL-12
.
Interior room lamp battery saver does not activate. —Check the interior room lamp battery
saver setting.
Refer to
INL-13
.
Revision: December 20092009 QX56

PRECAUTIONSINL-71
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005867732
The Supplemental Restraint System such as “AIR 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 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 inoper ative, 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 unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• 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 Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric 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 Wheel Rotation After Battery Disconnect
INFOID:0000000005867733
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 disconnecti ng 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 power 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: December 20092009 QX56

INL-72
< PRECAUTION >
PRECAUTIONS
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of a ll control units using CONSULT-III.
General precautions for service operationsINFOID:0000000003776271
• When removing or disassembling any part, be careful not to damage or deform it. Protect parts which may
get in the way with cloth.
• When removing parts with a screw driver or other tool , protect parts by wrapping them with vinyl or tape.
• Keep removed parts protected with cloth.
• If an non-reuseable part is removed, replace it with a new one.
• After re-assembly has been completed, make sure each part functions correctly.
• Never work with wet hands.
• Turn the lighting switch OFF befor e disconnecting and connecting the connector.
• Do not use organic solvent (paint thinner or gasoline) to clean lamps or remove sealant residue.
Revision: December 20092009 QX56

INTERIOR ROOM LAMPINL-73
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ON-VEHICLE REPAIR
INTERIOR ROOM LAMP
Removal and InstallationINFOID:0000000003776272
MAP LAMP
Removal
1. Remove overhead console (3). Refer to INT-17, "Removal and
Installation".
2. Disconnect connectors (4) and re move the map lamp screws
(1), then remove map lamp (2) from overhead console.
Installation
Installation is in the reverse order of removal.
Bulb Replacement
1. Using a suitable tool (A), remove map lamp lens (1).
Pawl
2. Release one side of the bulb (2) from the tab, then pull straight downward to remove.
CAUTION:
Wrap a cloth around tool to protect the housing and lens.
VANITY MIRROR LAMP
Removal
The vanity mirror lamp is replaced as part of the sunvisor assembly. Refer to INT-17, "Removal and Installa-
tion".
Installation
Installation is in the reverse order of removal.
Bulb Replacement
ALLIA0318ZZ
Map lamp bulb : 12V - 8W
ALLIA0319ZZ
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INL-74
< ON-VEHICLE REPAIR >
INTERIOR ROOM LAMP
1. Using a suitable tool (A), release the tabs and remove the vanitymirror lamp lens (1).
Pawl
2. Release one side of the bulb (2) from the tab, then pull straight out to remove.
CAUTION:
Wrap a cloth around tool to protect the housing and lens.
GLOVE BOX LAMP
Removal
1. Remove instrument lower panel RH and glove box. Refer to IP-17, "Removal and Installation".
2. Rotate glove box lamp socket and rotate counterclockwise to release from steering member.
Installation
Installation is in the reverse order of removal.
Bulb Replacement
1. Remove instrument lower panel RH and glove box. Refer to IP-17, "Removal and Installation".
2. Pull bulb (2) straight out from glove box lamp socket (1) to remove.
STEP LAMP
Removal
Vanity mirror lamp bulb : 12V - 1.8W
ALLIA0320ZZ
Glove box lamp bulb : 12V - 3.4W
ALLIA0321ZZ
Revision: December 20092009 QX56

INTERIOR ROOM LAMPINL-75
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1. Insert a suitable tool between door finisher and step lamp lens/socket to release the pawls.
2. Disconnect the step lamp connector, then remove step lamp.
Installation
Installation is in the reverse order of removal.
Bulb Replacement
1. Remove the step lamp lens/socket.
2. Pull the bulb straight out to remove.
PERSONAL LAMP
Removal
1. Remove overhead console. Refer to INT-17, "Removal and
Installation".
2. Remove personal lamp screws (3).
3. Disconnect personal lamp electrical connectors (1), then remove personal lamps (2) from overhead console.
Installation
ALLIA0013ZZ
1. Step lamp connector 2. Door finisher3. Step lamp lens/socket
4. Step lamp bulb Vehicle front
Step lamp bulb : 12V - 3.8W
ALLIA0322ZZ
Revision: December 20092009 QX56

INL-76
< ON-VEHICLE REPAIR >
INTERIOR ROOM LAMP
Installation is in the reverse order of removal.
Bulb Replacement
1. Using a suitable tool (A), release the pawls and remove personal lamp lens (1). Pawl
2. Pull bulb (2) straight out to remove.
CAUTION:
Wrap a cloth around tool to protect the housing and lens.
FOOTWELL LAMP
Removal
1. Rotate footwell lamp socket (3) counterclockwise to remove
from bracket.
Installation
Installation is in the reverse order of removal.
Bulb Replacement
1. Release the pawls and remove bulb shield (1) from bracket.
2. Pull bulb (2) straight out from footwell lamp socket (3) to remove. Personal lamp bulb : 12V - 6W
ALLIA0323ZZ
ALLIA0324ZZ
Footwell lamp bulb : 12V - 3.4W
Revision: December 20092009 QX56