battery INFINITI QX56 2006 Factory Service Manual

RF-2
PRECAUTIONS
Revision: November 20092006 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EIS004VI
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 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions EIS004VJ

Disconnect both battery cables in advance.

Never tamper with or force air bag lid open, as this may adversely affect air bag performance.

Be careful not to scratch pad and other parts.

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 screwdriver or other tool, protect parts by wrapping them with vinyl or tape.

Keep removed parts protected with cloth.

If a clip is deformed or damaged, replace it.

If an unreusable part is removed, replace it with a new one.

Tighten bolts and nuts firmly to the specified torque.

After re-assembly has been completed, make sure each part functions correctly.

Remove stains in the following way.
Water-soluble stains:
Dip a soft cloth in warm water, and then squeeze it tightly. After wiping the stain, wipe with a soft dry cloth.
Oil stain:
Dissolve a synthetic detergent in warm water (density of 2 to 3% or less), dip the cloth, then clean off the stain
with the cloth. Next, dip the cloth in fresh water and squeeze it tightly. Then clean off the detergent completely.
Then wipe the area with a soft dry cloth.

Do not use any organic solvent, such as thinner or benzine.

SUNROOFRF-15
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Revision: November 2009 2006 QX56
Terminals and Reference Values for BCMEIS004VT
Terminals and Reference Values for Sunroof Motor AssemblyEIS004VU
*: When MODE1 is selected. For more details, refer to RF-17, "Work Support" .
Work FlowEIS004VV
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to RF-10, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to RF-17, "
Trouble Diagnosis Chart by Symptom" .
4. Does sunroof system operate normally? If Yes, GO TO 5, If No, GO TO 3.
5. Inspection End.
Terminal Wire Color ItemConditionVoltag e
(Approx.)
12 R/L Front door switch RH signal ON (Open)
0
OFF (Close) Battery voltage
38 W/L Ignition power supply Ignition switch ON Battery voltage
47 SB Front door switch LH signal ON (Open)
0
OFF (Close) Battery voltage
67 B Ground ——
68 W/L RAP signal Ignition switch ON
Battery voltage
Within 45 seconds after ignition switch is turned
OFF
* Battery voltage
When front door LH or RH is open while
retained power is operating 0
69 W/R Power window power supply —Battery voltage
70 W/B BAT power supply —Battery voltage
Terminal Wire Color ItemConditionVoltage
(Approx.)
1 W/L RAP signal Ignition switch ON
Battery voltage
Within 45 seconds after ignition switch is
turned OFF
*Battery voltage
When front door LH or RH is open while
retained power is operating 0
3 P/W Sunroof switch CLOSE signal Ignition switch ON and sunroof switch
CLOSE position
0
Other than above Battery voltage
4 O Sunroof switch TILT UP signal Ignition switch ON and sunroof switch in
TILT UP position
0
Other than above Battery voltage
5 W/R BAT power supply —Battery voltage
7 B Ground ——
8 Y Ground signal ——
9 P Sunroof switch OPEN signal Ignition switch ON and sunroof switch
OPEN position
0
Other than above Battery voltage
10 L/R Sunroof switch TILT DOWN signal Ignition switch ON and sunroof switch in
TILT DOWN position
0
Other than above Battery voltage

RF-18
SUNROOF
Revision: November 20092006 QX56
BCM Power Supply and Ground Circuit CheckEIS004W1
1. CHECK FUSE
Check the following BCM fuse and fusible link.
NOTE:
Refer to RF-10, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM connectors M18 and M20 termi- nals 38, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Retained power operation does not operate properly. 1. Check the retained power operation mode setting
RF-112. BCM power supply and ground circuit checkRF-18
3. Door switch checkRF-21
4. Replace sunroof motor assemblyRF-27
Motor does not stop at the sunroof fully-open or fully-
closed position.1. Initialization procedure check
RF-11
2. Replace sunroof motor assemblyRF-27
Sunroof does not do the interruption detection.1. Replace sunroof motor assembly RF-27
SymptomDiagnostic procedure and repair order Refer to page
Component PartsTerminal No. (SIGNAL) AmpereNo. Location
BCM 38 (IGN power supply)
10A59 Fuse and relay box
70 (BAT power supply) 50Af Fuse and fusible link box
ConnectorTe r m i n a l s
ConditionVoltage
(Approx.)
(+) (– )
M18 38
Ground Ignition switch ON
Battery voltage
M20 70 Igniting switch OFF
WIIA0229E
Connector TerminalsContinuity
M20 67Ground YES
LIIA0915E

RF-20
SUNROOF
Revision: November 20092006 QX56
Sunroof Motor Assembly Power Supply and Ground Circuit CheckEIS004W3
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the sunroof motor assembly connector.
3. Turn ignition switch ON.
4. Check voltage between sunroof motor assembly connector R4 terminals 1, 5 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK GROUND CIRCUIT
Check continuity between sunroof motor assembly connector R4 terminal 7 and ground.
OK or NG
OK >> Sunroof motor assembly power supply and ground cir- cuits are OK. Further inspection is necessary. Refer to
RF-17, "
Trouble Diagnosis Chart by Symptom" .
NG >> Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector M20 terminals 68, 69 and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
Connector Terminals
Condition Voltage
(Approx.)
(+) ( –)
R4 1
Ground Ignition switch ON Battery voltage
Within 45 seconds after
ignition switch is turned
OFF
Battery voltage
When front door LH or
RH is open while retained
power is operating 0
5 Ignition switch OFF Battery voltage
WIIA0250E
7 - Ground : Continuity should exist.
WIIA0251E
68 - Ground: Battery voltage
69 - Ground : Battery voltage
WIIA0425E

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Revision: November 2009 2006 QX56
4. CHECK SUNROOF MOTOR CIRCUIT HARNESS
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM connector M20 terminal 68, 69 and sunroof motor assembly connector R4 terminals 1, 5.
4. Check continuity between BCM connector M20 terminal 68, 69 and ground.
OK or NG
OK >> Sunroof motor assembly power supply circuits are OK. Further inspection is necessary. Refer to RF-17, "
Trouble Diagnosis Chart by Symptom" .
NG >> Repair or replace harness between BCM and sunroof motor assembly.
Door Switch CheckEIS004W4
1. CHECK DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check door switches ("DOOR SW-DR" and "DOOR SW-AS") in "DATA MONITOR" mode with CONSULT-II.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Door switches are OK.
NG >> GO TO 2. 68 - 1
: Continuity should exist.
69 - 5 : Continuity should exist.
68 - Ground : Continuity should not exist.
69 - Ground : Continuity should not exist.
LIIA1246E
Monitor item Condition
DOOR SW-DR OPEN
: ON
CLOSE : OFF
DOOR SW-AS OPEN
: ON
CLOSE : OFF
PIIA2464E
Item Connector Te r m i n a l s
Condition Voltage
(Approx.)
(+) (– )
RH M18 12 GroundDoor open
(switch closed) 0
Door closed
(switch open) Battery voltage
LH M19 47 Door open
(switch closed) 0
Door closed
(switch open) Battery voltage
WIIA0234E

RF-22
SUNROOF
Revision: November 20092006 QX56
2. CHECK DOOR SWITCH CIRCUIT
1. Disconnect front door switches and BCM connectors.
2. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 and BCM connec- tor M18, M19 terminals 12 and 47.
3. Check continuity between front door switch connector B8 (LH) or B108 (RH) terminal 2 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between BCM and sunroof motor assembly.
3. CHECK DOOR SWITCHES
Check continuity between each door switch terminal 2 and body ground part of door switch.
OK or NG
OK >> GO TO 4.
NG >> Replace malfunctioning door switch.
4. CHECK BCM OUTPUT SIGNAL
1. Connect BCM connectors.
2. Check voltage between BCM connector M18 terminal 12, M19 terminal 47 and ground.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
Front door switch LH
2 - 47
: Continuity should exist.
Front door switch RH
2 - 12 : Continuity should exist.
2 - Ground : Continuity should not exist.
WIIA0235E
Terminal Condition Continuity
2 Body ground part
of door switch Door switch pushed No
Door switch released Yes
WIIA0289E
12 - Ground
: Battery voltage
47 - Ground : Battery voltage
WIIA0234E

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3. Adjust the glass lid assembly. Refer to RF-23, "Fitting Adjustment" .
4. Install side cover LH and RH.
WIND DEFLECTOR
Removal
1. Open the glass lid assembly.
2. Remove screws from the left, center, and right side wind deflec- tor holders.
3. Remove the wind deflector from the sunroof frame assembly.
Installation
Installation is in the reverse order of removal.
SUNSHADE ASSEMBLY
Removal
1. Remove the sunroof frame assembly. Refer to RF-26, "SUNROOF UNIT" .
2. Remove the two (2) shade stoppers from the end of the sunroof frame assembly.
3. Remove the sunshade assembly from the rear end of the sun- roof frame assembly.
Installation
Installation is in the reverse order of removal.
SUNROOF MOTOR ASSEMBLY
Removal
CAUTION:

When removing the sunroof motor assembly, be sure the glass lid assembly is in the fully closed
position.

Never run the removed sunroof motor assembly.
1. Position the glass lid assembly in the fully closed position.
2. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
3. Remove the overhead console assembly. Refer to EI-38, "
HEADLINING" .
LIIA1099E
SBT251A

RF-28
SUNROOF
Revision: November 20092006 QX56
4. Disconnect the harness connector (2) from the sunroof motor
assembly.

⇐: Vehicle front
5. Remove the screws (3) and the sunroof motor assembly (1).
Installation
CAUTION:
Before installing the sunroof motor assembly, be sure to position the link and wire assembly in the
symmetrical and fully closed position.
1. Move the sunroof motor assembly (1) laterally little by little so that the gear is completely engaged into the wire on the sunroof
unit until surfaces become parallel. Then secure the sunroof
motor assembly with screws.

⇐: Vehicle front
2. Secure the sunroof motor assembly (1) with screws (3).
3. Connect the harness connector (2) to the sunroof motor assem- bly.
4. Install the overhead console assembly. Refer to EI-38, "
HEAD-
LINING" .
5. Connect the battery positive and negative cables.
6. Reset the sunroof motor memory. Refer to RF-11, "
MEMORY RESET PROCEDURE" .
DRAIN HOSES
WIIA0772E
WIIA0772E
WIIA0853E

RSU-1
REAR SUSPENSION
E SUSPENSION
CONTENTS
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A
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RSU
Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions for Rear Suspension ....................... ..... 3
PREPARATION ...................................................... ..... 4
Commercial Service Tools ................................... ..... 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 5
NVH Troubleshooting Chart ................................ ..... 5
CAN COMMUNICATION ....................................... ..... 6
System Description ............................................. ..... 6
TROUBLE DIAGNOSIS ......................................... ..... 7
How to Perform Trouble Diagnoses for Quick and
Accurate Repair .................................................. ..... 7
INTRODUCTION .............................................. ..... 7
CLARIFY CONCERN ....................................... ..... 7
WORK FLOW ........................................................ 8
Component Parts and Harness Connector Location ..... 9
Wiring Diagram — A/SUSP — ............................ ... 10
Basic Inspection .................................................. ... 12
AIR HOSES ...................................................... ... 12
POWER SYSTEM TERMINAL LOOSENESS
AND BATTERY INSPECTION ......................... ... 12
CK SUSP INDICATOR LAMP INSPECTION ... ... 12
CK SUSP Indicator Lamp Timing ........................ ... 12
Control Unit Input/Output Signal Standard .......... ... 12
CONSULT-II Function (AIR LEVELIZER) ............ ... 13
CONSULT-II OPERATION ............................... ... 13
SELF-DIAGNOSIS ........................................... ... 14
WORK SUPPORT ............................................ ... 15
DATA MONITOR .............................................. ... 16
ACTIVE TEST .................................................. ... 16
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS .................................................................... ... 18
Height Sensor System Inspection ....................... ... 18
Exhaust Valve Solenoid System Inspection ........ ... 19
Compressor Motor, Compressor Motor Relay and
Circuit Inspection ................................................. ... 21
TROUBLE DIAGNOSES FOR SYMPTOMS ......... ... 24Load Leveling Rear Air Suspension System Does
Not Operate ............................................................ 24
CK SUSP Indicator Lamp Stays On When Ignition
Switch Is Turned On ............................................
... 25
REAR SUSPENSION ASSEMBLY ........................... 26 Components ........................................................ ... 26
On-Vehicle Inspection and Service ...................... ... 27
SHOCK ABSORBER INSPECTION ................. ... 27
Wheel Alignment Inspection ................................ ... 28
PRELIMINARY INSPECTION .......................... ... 28
GENERAL INFORMATION AND RECOMMEN-
DATIONS .......................................................... ... 28
THE ALIGNMENT PROCESS .......................... ... 29
CAMBER .......................................................... ... 29
TOE-IN ............................................................. ... 29
REAR SUSPENSION MEMBER ............................... 31 Removal and Installation ..................................... ... 31
REMOVAL ........................................................ ... 32
INSPECTION AFTER REMOVAL .................... ... 33
INSTALLATION ................................................ ... 34
SHOCK ABSORBER ............................................. ... 35
Removal and Installation ..................................... ... 35
REMOVAL ........................................................ ... 35
INSTALLATION ................................................ ... 35
INSPECTION AFTER INSTALLATION ............. ... 35
SUSPENSION ARM ............................................... ... 36
Removal and Installation ..................................... ... 36
REMOVAL ........................................................ ... 36
INSPECTION AFTER REMOVAL .................... ... 36
INSTALLATION ................................................ ... 37
FRONT LOWER LINK ........................................... ... 38
Removal and Installation ..................................... ... 38
REMOVAL ........................................................ ... 38
INSPECTION AFTER REMOVAL .................... ... 38
INSTALLATION ................................................ ... 39
REAR LOWER LINK & COIL SPRING .................. ... 40
Removal and Installation ..................................... ... 40
REMOVAL ........................................................ ... 40
INSPECTION AFTER REMOVAL .................... ... 41
INSTALLATION ................................................ ... 41

RSU-12
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
Basic InspectionEES001H6
AIR HOSES
1. Check for pinched or damaged air hoses between the suspension air reservoir and each load leveling rear
air suspension shock absorber. Reposition, repair or replace hoses as necessary.
2. Check the air hose connections at the suspension air reservoir and at the shock absorbers for leaks. If connections are leaking, repair or replace hoses as necessary.
POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION
Make sure the battery positive cable, negative cable and ground connection are not loose. In addition, make
sure the battery is sufficiently charged.
CK SUSP INDICATOR LAMP INSPECTION
1. Make sure the CK SUSP indicator lamp turns on for approximately 2 seconds when the ignition switch is
turned ON. If it does not, check the combination meter. Refer to DI-5, "
COMBINATION METERS" .
2. Make sure the lamp turns off approximately 2 seconds after the ignition switch is turned ON. If the lamp does not turn off, conduct self-diagnosis of the suspension control unit.
3. After conducting the self-diagnosis, be sure to erase the error memory. Refer to RSU-13, "
CONSULT-II
Function (AIR LEVELIZER)" .
CK SUSP Indicator Lamp TimingEES001H7
X: ON
—: OFF
Control Unit Input/Output Signal StandardEES001H8
ConditionCK SUSP
indicator lamp Remarks
Ignition switch OFF ––
Ignition switch ON X Turns off after approximately 2 seconds.
Te r m i n a l
No. Wire color
Item ConditionVoltage (V)
(Approx.)
1 V Compressor relay output
Ignition switch ON or STARTBattery voltage
3 W Height sensor signal input 0.2V - 4.8V
5 R Reference voltage 5V
6 G/R Ignition power
Battery voltage
7W /LB atte ry p ow er —
8 G/W Diagnostic K-line ——
9 SB Exhaust valve output Ignition switch ON or STARTBattery voltage
10 BR Warning lamp output ——
14 L Height sensor ground ——
15 BR/W Generator L signal input Engine running—
16 B Suspension control unit ground —0V