ignition INFINITI QX56 2007 Factory Service Manual

SE-72
< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
Check continuity between ADP steering wheel tilt switch connector
M16 terminal 1 and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace or replace harness.
Front Door Switch LH Circuit InspectionINFOID:0000000003533203
1.CHECK FUNCTION
With CONSULT-II
Touch "BCM" with “DOOR SW-DR” on the DATA MONITOR, check
ON/OFF operation when the front door is open and closed.
*:Refer to SE-32, "CONSULT-II Function (AUTO DRIVE POS.)".
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Front door switch LH circuit is OK.
NG >> GO TO 2.
2.CHECK FRONT DOOR SWITCH LH
1. Turn ignition switch OFF.
2. Disconnect front door switch LH.
3. Check continuity between front door switch LH terminal 2 and
exposed metal of switch while pressing and releasing switch.
OK or NG
OK >> GO TO 3.
NG >> Replace front door switch LH.
3.CHECK HARNESS CONTINUITY
1. Disconnect BCM.
2. Check continuity between BCM connector M19 terminal 47 and
front door switch LH connector B8 terminal 2.
3. Check continuity between BCM connector M19 terminal 47 and
ground.
OK or NG
OK >> Front door switch LH circuit is OK.
NG >> Repair or replace harness.1 - Ground : Continuity should exist.
LIIA0490E
Monitor item [OPERATION
or UNIT]Contents
DOOR SW DR*“ON/
OFF”Door open (ON)/door closed (OFF) status judged
from the front door switch is displayed.
PIIA0291E
Terminals Condition Continuity
2GroundWith the front door switch LH pressed No
With the front door switch LH released Yes
LIIA2377E
47 - 2 : Continuity should exist.
47 - Ground : Continuity should not exist.
LIIA1027E

AUTOMATIC DRIVE POSITIONER
SE-73
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UART Communication Line Circuit InspectionINFOID:0000000003533204
1.CHECK UART LINE INPUT/OUTPUT SIGNAL 1
1. Turn ignition switch OFF.
2. Check signal between driver seat control unit connector and
ground, with oscilloscope.
OK or NG
OK >> GO TO 2.
NG >> Check the following.
• When voltage wave form does not appear with a constant voltage (approx. 5V), replace driver
seat control unit.
• When voltage wave form does not appear with a constant voltage (approx. 0V), replace auto-
matic driver seat control unit.
2.CHECK UART LINE INPUT/OUTPUT SIGNAL 2
Check signal between automatic drive positioner control unit con-
nector ground, with oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Check the following.
• When voltage wave form does not appear with a constant voltage (approx. 5V), replace auto-
matic drive positioner control unit.
• When voltage wave form does not appear with a constant voltage (approx. 0V), replace driver
seat control unit.
3.CHECK UART LINE HARNESS
ConnectorTe r m i n a l s
Condition Signal
(+) (-)
P2 17 GroundPedal ad-
justing
switch ON
(FOR-
WARD or
BACK-
WARD op-
eration)
PIIA4599E
PIIA4814E
ConnectorTe r m i n a l s
Condition Signal
(+) (-)
M33 10 GroundPedal ad-
justing
switch ON
(FOR-
WARD or
BACK-
WARD op-
eration)
PIIA4816E
PIIA4813E

FRONT SEAT
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REMOVAL
When removing or installing the seat trim, handle it carefully to keep dirt out and avoid damage.
CAUTION:
• Before removing the front seat, turn the ignition switch off, disconnect both battery cables and wait
at least 3 minutes.
• When checking the power seat circuit for continuity using a circuit tester, do not confuse its connec-
tor with the side air bag module connector. Such an error may cause the air bag to deploy.
• Do not drop, tilt, or bump the side air bag module while installing the seat. Always handle it with
care.
• After front side air bag module inflates, front seatback assembly must be replaced.
• Front passenger seat is equipped with an Occupant Classification System sensor and control mod-
ule. Do not disassemble front passenger seat cushion assembly or remove the trim as this will affect
the Occupant Classification System calibration.
• Always replace passenger seat cushion as an assembly.
1. Slide the seat until the four body mounting bolts are visible and a tool can be inserted.
NOTE:
• If disassembling the seat after removal, set the front/rear cushion lifters to the top position.
2. Disconnect both battery cables and wait at least 3 minutes.
3. Disconnect the side air bag module harness connector.
4. Remove the four body mounting bolts.
5. Disconnect the power seat harness connectors and remove the seat from the vehicle.
NOTE:
When removing and installing the seat, use shop cloths to protect the vehicle from damage.
INSTALLATION
• Installation is in the reverse order of removal.
Disassembly and AssemblyINFOID:0000000003533211
SEATBACK TRIM AND PAD
WARNING:
Removal of front side air bag module should only be done to allow deployment of front side air bag
module prior to disposal of seatback assembly.
NOTE:
Only complete seatback assemblies can be replaced on vehicles equipped with side air bags.
NOTE:
Be sure to set the front/rear cushion lifter to the top position.
Driver Seat
1. Remove the headrest.
1. Headrest 2. Headrest holder with multi-position
lock 3. Seatback board
4. Armrest assembly 5. Lumbar switch bezel 6. Fold flat link bar
7. Outboard reclining arm outer cover 8. Outboard reclining arm inner cover 9. Inboard reclining arm inner cove
10. Latch cover 11. LH outer leg cover 12. Outboard reclining arm inner cover
13. Seat cushion inner cover 14. Passenger seat wiring harness 15. Inner front leg cover
16. Power seat frame assembly 17. NVH assembly 18. Seat cushion front finisher
19. Outer pedestal finisher 20. Seat cushion outer finisher 21. Seat cushion assembly
22. Power seat switch escutcheon 23. Slide switch knob 24. Recliner switch knob
25. Seatback assembly 26. Headrest holder 27. Seat slide/ recline switch
28. Power lumbar switch

SRS-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003532849
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 performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
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 har-
ness connectors.
Precaution for SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
INFOID:0000000003532850
• Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bags and seat belt
pre-tensioners to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.
• The air diagnosis sensor unit must always be installed with the arrow mark “⇐” pointing toward the front of
the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or rust
before installation and replace as required.
• The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.
• Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side
facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.
• Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
• After air bag inflates, the front instrument panel assembly should be replaced if damaged.
Occupant Classification System PrecautionINFOID:0000000003532851
Replace control unit and passenger front seat cushion as an assembly.

SRS-4
< SERVICE INFORMATION >
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS ConfigurationINFOID:0000000003532853
The air bag deploys if the air bag diagnosis sensor unit is activated while the ignition switch is in the ON or
START position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module, front passenger air bag module, front seat belt pre-tensioners
and seat belt buckle pre-tensioner assemblies are activated in a frontal collision but not in a side collision.
SRS configurations for some collision modes are as follows:
WHIA0215E
SRS configuration Frontal collision Left side collisionRight side colli-
sionRollover
Driver air bag module x — — —
Front passenger air bag module x — — —
Front LH seat belt pre-tensioner x — — x
Front LH seat belt buckle pre-tensioner assembly x — — x
Front RH seat belt pre-tensioner x — — x
Front RH seat belt buckle pre-tensioner assembly x — — x
Front LH side air bag module — x — —
Front RH side air bag module — — x —
LH side curtain air bag module — x — x
RH side curtain air bag module — — x x

TROUBLE DIAGNOSIS
SRS-19
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SRS
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HOW TO ERASE SELF-DIAGNOSIS RESULTS
• “SELF-DIAG [CURRENT]”
A current self-diagnosis result is displayed on the CONSULT-II
screen in real time.
After the malfunction is repaired completely, no malfunction is
detected on “SELF-DIAG [CURRENT]”.
• “SELF-DIAG [PAST]”
Return to the “SELF-DIAG [CURRENT]” CONSULT-II screen by
touching “BACK” key of CONSULT-II and select “SELF-DIAG
[PAST]” in SELECT DIAG MODE. Touch “ERASE” in “SELF-DIAG
[PAST]” mode.
NOTE:
If the memory of the malfunction in “SELF-DIAG [PAST]” is
not erased, the User mode will continue to show the system
malfunction by the operation of the warning lamp even if the
malfunction is repaired completely.
• “TROUBLE DIAG RECORD”
The memory of “TROUBLE DIAG RECORD” cannot be erased.
Self-Diagnosis Function (Without CONSULT-II)INFOID:0000000003532867
• The reading of these results is accomplished using one of two modes — “User mode” and “Diagnosis
mode”.
• After a malfunction is repaired, turn the ignition switch OFF for at least one second, then back ON. Diagnosis
mode returns to the User mode. At that time, the self-diagnostic result is cleared.
SRS804
SRS701
SRS702

SRS-20
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
HOW TO CHANGE SELF-DIAGNOSIS MODE
HOW TO ERASE SELF-DIAGNOSIS RESULTS
After a malfunction is repaired, turn the ignition switch OFF for at least one second, then back ON. Diagnosis
mode returns to the User mode. At that time, the self-diagnostic result is cleared.
SRS Operation CheckINFOID:0000000003532868
DIAGNOSTIC PROCEDURE 1
Checking SRS Operation Using “AIR BAG” Warning Lamp—User Mode
1. Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.
2. Compare the SRS air bag warning lamp blinking pattern with the
examples.
SHIA0183E
BF-1845D

TROUBLE DIAGNOSIS
SRS-27
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1. If no DTC is detected on “SELF-DIAG [CURRENT]”, repair of
SRS is completed. Go to step 2.
If any DTC is detected on “SELF-DIAG [CURRENT]”, the mal-
functioning part has not been repaired completely or another
malfunctioning part is being detected. Go to "DIAGNOSTIC
PROCEDURE 2" .
2. Touch “ERASE”.
NOTE:
Touch “ERASE” to clear the memory of the malfunction
(“SELF-DIAG [PAST]”).
If the memory of the malfunction in “SELF-DIAG [PAST]” is not
erased, the User mode shows the system malfunction by the
operation of the warning lamp even if the malfunction is repaired
completely.
3. Touch “BACK” key of CONSULT-II to “SELECT DIAG MODE”
screen. Touch “SELF-DIAG [PAST]”.
4. Check that no malfunction is detected on “SELF-DIAG [PAST]”.
5. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears in order to return to User mode from Diagnosis mode.
6. Turn ignition switch OFF then turn off and disconnect CON-
SULT-II.
7. Go to SRS-20, "
SRS Operation Check" .
DIAGNOSTIC PROCEDURE 4
Check SRS Repair History
1.CONSIDER POSSIBILITY THAT SELF-DIAGNOSTIC RESULT WAS NOT ERASED AFTER REPAIR
Check repair history of the SRS.
Have any previous repairs been made to the SRS?
Yes >> Self-diagnostic result “SELF-DIAG [PAST]” (previously stored in the memory) might not be erased
after repair. Go to "DIAGNOSTIC PROCEDURE 3" .
No >> Go to "DIAGNOSTIC PROCEDURE 2" .
DIAGNOSTIC PROCEDURE 5
SRS701
WHIA0151E
BCIA0031E
SRS702

SRS-28
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Check SRS Intermittent Malfunction Using CONSULT-II—Diagnosis Mode
Refer to GI-36, "CONSULT-II Start Procedure" .
1. If diagnostic codes are displayed on “SELF-DIAG [PAST]”, go to
step 4.
If no malfunction is detected on “SELF-DIAG [PAST]”, touch
“BACK” and go back to “SELECT DIAG MODE”.
2. Touch “TROUBLE DIAG RECORD”.
NOTE:
With “TROUBLE DIAG RECORD”, diagnosis results previ-
ously erased by a reset operation can be displayed.
3. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.
4. Touch “PRINT”.
5. Compare diagnostic codes to "CONSULT-II Diagnostic Code
Chart".
6. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears.
7. Turn ignition switch OFF, then turn off and disconnect CON-
SULT-II, and both battery cables.
8. Repair the system as outlined by the “Repair order” in “Intermit-
tent Malfunction Diagnostic Code Chart”, that corresponds to the
self-diagnostic result. For replacement procedure of component
parts, refer to the Removal and Installation procedure for the appropriate component.
9. Go to "DIAGNOSTIC PROCEDURE 3" , for final checking.
Trouble Diagnosis without CONSULT-IIINFOID:0000000003532870
DIAGNOSTIC PROCEDURE 6
Inspect SRS Malfunction Using "AIR BAG" Warning Lamp—Diagnosis Mode
NOTE:
WHIA0152E
SRS702
BCIA0031E
WHIA0153E

TROUBLE DIAGNOSIS
SRS-29
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SRS will not enter Diagnosis mode if no malfunction is detected in User mode.
1. Turn ignition switch ON.
2. After “AIR BAG” warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
3. Wait more than 3 seconds.
4. Repeat steps 1 to 3 two more times (3 times total).
5. Turn ignition switch ON.
SRS is now in Diagnosis mode.
"AIR BAG" warning lamp operates in Diagnosis mode as follows:
WARNING LAMP FLASH CODE CHART
SHIA0026E
WHIA0260E
WHIA0198E
WHIA0261E