ignition INFINITI QX56 2006 Factory Service Manual

SE-72
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
Door Mirror Remote Control Switch Ground Circuit InspectionEIS004YF
1. CHECK DOOR MIRROR REMOTE CONTROL SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door mirror remote control switch.
3. Check continuity between door mirror remote control switch con- nector D10 terminal 13 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK DOOR MIRROR REMOTE CONTROL SWITCH (CHANGEOVER SWITCH)
Check continuity between door mirror remote control switch termi-
nals as follows.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace door mirror remote control switch.
Seat Memory Switch Circuit InspectionEIS004YG
1. CHECK FUNCTION
With CONSULT-II
With “SET SW, MEMORY SW1, MEMORY SW2 ” on the DATA
MONITOR, operate the switch to check ON/OFF operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Seat memory switch circuit is OK.
NG >> GO TO 2. 13 - Ground
: Continuity should exist.
LIIA1825E
Terminals ConditionContinuity
3 13Changeover switch RIGHT position Yes
Other than above
No
2 Changeover switch LEFT position Yes
Other than above
No
LIIA2052E
Monitor item [OPERATION or
UNIT] Contents
MEMORY SW1 “ON/OFF ”ON/OFF status judged from the seat
memory switch 1 signal is displayed.
MEMORY SW2 “ON/OFF ”ON/OFF status judged from the seat
memory switch 2 signal is displayed.
SET SW “ON/OFF ”ON/OFF status judged from the setting
switch signal is displayed.
PIIA0309E

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2. CHECK SEAT MEMORY SWITCH
1. Turn ignition switch OFF.
2. Disconnect seat memory switch.
3. Operate the setting switch and seat memory switch.
4. Check continuity between seat memory switch terminals as fol- lows.
OK or NG
OK >> GO TO 3.
NG >> Replace seat memory switch.
3. CHECK HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit.
2. Check continuity between automatic drive positioner control unit connector M33 terminals 9, 24, 25 and seat memory switch con-
nector D5 terminals 1, 2, 3.
3. Check continuity between automatic drive positioner control unit connector M41 terminals 9, 24, 25 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK SEAT MEMORY SWITCH GROUND CIRCUIT
Check continuity between seat memory switch D5 terminal 4 and
ground.
OK or NG
OK >> Replace automatic drive positioner control unit.
NG >> Repair or replace harness.
Terminal Condition Continuity
1
4Memory switch 1: ON
Yes
Memory switch 1: OFF No
2 Memory switch 2: ON
Yes
Memory switch 2: OFF No
3 Set switch: ON
Yes
Set switch: OFF No
LIIA1020E
9 - 1: Continuity should exist.
24 - 3 : Continuity should exist.
25 - 2 : Continuity should exist.
9 - Ground : Continuity should not exist.
24 - Ground : Continuity should not exist.
25 - Ground : Continuity should not exist.
PIIA4576E
4 - Ground : Continuity should exist.
PIIA4821E

SE-74
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
Seat Memory Indicator Lamp Circuit InspectionEIS004YH
1. CHECK FUNCTION
With CONSULT-II
With “MEMORY SW INDCTR ” in ACTIVE TEST, check operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Seat memory switch indicator lamp circuit is OK.
NG >> GO TO 2.
2. CHECK SEAT MEMORY SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect seat memory switch.
3. Check voltage between seat memory switch connector D5 ter- minal 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK SEAT MEMORY INDICATOR CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit.
3. Check continuity between automatic drive positioner control unit connector M33 terminals 12, 13 and seat memory switch con-
nector D5 terminals 6, 7.
4. Check continuity between automatic drive positioner control unit connector M33 terminals 12, 13 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
Test item Description
MEMORY SW INDCTR The memory switch indicator is lit by receiving the
drive signal.
PIIA0319E
5 - Ground
: Battery voltage
PIIA4595E
12 - 6 : Continuity should exist.
13 - 7 : Continuity should exist.
12 - Ground : Continuity should not exist.
13 - Ground : Continuity should not exist.
LIIA1022E

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4. CHECK SEAT MEMORY SWITCH INDICATOR SIGNAL
1. Connect seat memory switch.
2. Turn ignition switch ON.
3. Check voltage between automatic drive positioner control unit connector M33 terminals 12, 13 and ground.
OK or NG
OK >> Replace automatic drive positioner control unit.
NG >> Replace seat memory switch.
Door Mirror Sensor Power Supply and Ground Circuit inspectionEIS004YI
1. CHECK DOOR MIRROR SENSOR CIRCUIT HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit and door mir- ror (LH and RH).
2. Check continuity between automatic drive positioner control unit connector M34 terminals 33, 41 and door mirror connector D4
(LH), D107 (RH) terminals 5, 6.
3. Check continuity between automatic drive positioner control unit connector M34 terminals 33, 41 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK MIRROR SENSOR POWER SUPPLY
1. Connect automatic drive positioner control unit and door mirror LH.
2. Turn ignition switch to ACC.
3. Check voltage between automatic drive positioner control unit connector M34 terminal 33 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace automatic drive positioner control unit. 12 - Ground
: Battery voltage
13 - Ground : Battery voltage
LIIA1134E
33 - 5 : Continuity should exist.
41 - 6 : Continuity should exist.
33 - Ground : Continuity should not exist.
41 - Ground : Continuity should not exist.
LIIA1023E
33 - Ground : Approx. 5V
LIIA1136E

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AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
3. CHECK MIRROR SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between automatic drive positioner control unit connector M34 terminal 41 and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace automatic drive positioner control unit.
A/T Device (Park Position Switch) Circuit InspectionEIS004YJ
1. CHECK FUNCTION
With CONSULT-II
Check that when the A/T selector lever is in P position, “DETENT
SW ” on the DATA MONITOR becomes OFF.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> A/T device (park position switch) circuit is OK.
NG >> GO TO 2.
2. CHECK A/T DEVICE (PARK POSITION SWITCH) HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/T device and driver seat control unit.
3. Check continuity between A/T device connector M203 terminal 6 and driver seat control unit connector P2 terminal 21.
4. Check continuity between A/T device connector M203 terminal 6 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness. 41 - Ground
: Continuity should exist.
LIIA1135E
Monitor item
[OPERATION or UNIT] Contents
DETENT SW “
ON/
OFF ”The A/T selector lever position
“P position (OFF)/other
than P position (ON) ” judged from the park position
switch signal is displayed.
PIIA0291E
6 - 21 : Continuity should exist.
6 - Ground : Continuity should not exist.
LIIA1024E

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3. CHECK PARK POSITION SWITCH
Check continuity between A/T device (park position switch) terminals
as follows.
OK or NG
OK >> A/T device is OK.
NG >> Replace A/T device.
Steering Wheel Tilt Switch Circuit InspectionEIS004YK
1. CHECK FUNCTION
With CONSULT-II
With “TILT SW-UP, TILT SW-DOWN ” on the DATA MONITOR, oper-
ate the ADP steering wheel tilt switch to check ON/OFF operation.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner control unit connector and ground.
OK or NG
OK >> ADP steering wheel tilt switch circuit is OK.
NG >> GO TO 2.
Terminals ConditionContinuity
56 P position
No
Other than P position Yes
LIIA1491E
Monitor item [OPERATION or
UNIT] Contents
TILT SW-UP “ON/OFF ”Operation (ON)/open (OFF) status
judged from the tilt switch (FR) signal is
displayed.
TILT SW-DOWN “ON/OFF ”Operation (ON)/open (OFF) status
judged from the tilt switch (RR) signal is
displayed.
PIIA0315E
Connector
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M33 1
Ground Tilt switch ON (UP operation) 0
Other than above
5
17 Tilt switch ON (DOWN opera-
tion)
0
Other than above 5
LIIA0491E

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Revision: November 2009 2006 QX56
Front Door Switch LH Circuit InspectionEIS004YL
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-37, "DATA MONITOR" .
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.
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
ConditionContinuity
2Ground With the front door switch LH pressed No
With the front door switch LH released Yes
WIIA0644E
47 - 2
: Continuity should exist.
47 - Ground : Continuity should not exist.
LIIA1027E

SE-80
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
UART Communication Line Circuit InspectionEIS004YM
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.
Connector Te r m i n a l s
Condition Signal
(+) (-)
P2 17 Ground Pedal
adjusting
switch ON
(FOR-
WARD or
BACK-
WARD
operation)
PIIA4599E
PIIA4814E
Connector
Te r m i n a l s
Condition Signal
(+) (-)
M33 10 Ground Pedal
adjusting
switch ON
(FOR-
WARD or
BACK-
WARD
operation)
PIIA4816E
PIIA4813E

SE-94
FRONT SEAT
Revision: November 20092006 QX56
REMOVAL
CAUTION:

When removing or installing the seat trim, handle it carefully to keep dirt out and avoid damage.

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 con-
nector 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
module. 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 AssemblyEIS004YT
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.
Be sure to set the front/rear cushion lifter to the top position.
Driver Seat
1. Remove the headrest.
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

PRECAUTIONSSRS-3
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SRS
Revision: November 2009 2006 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EHS0016A
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 for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” ServiceEHS0016B

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 PrecautionEHS0016C
Replace control unit and passenger front seat cushion as an assembly.