seats INFINITI QX56 2008 Factory Owner's Manual

SB-12
< ON-VEHICLE REPAIR >
SEAT BELTS
4. Check the shoulder seat belt guide and shoulder belt height adjuster for\
front seats. Ensure guide swivelsfreely and that belt lays flat and does not bind in guide. Ensure height adjuster operates properly and
holds securely.
5. Check retractor operation:
a. Fully extend the seat belt webbing and check for twists, tears or other damage.
b. Allow the seat belt to retract. Ensure that belt retu rns smoothly and completely into the retractor. If the
seat belt does not return smoothly, wipe the inside of the loops with a clean paper cloth, because dirt built
up in the loops of the upper anchors can c ause the seat belts to retract slowly.
c. Fasten the seat belt. Check the seat belt returns smoothly and completely to the retractor. If the belt does not return smoothly, the cause may be an accumulati on of dust or dirt. Use the “SEAT BELT TAPE SET”
and perform the following steps.
Inspect the front seat belt through-anchor:1. Pull the seat belt out to a length of 500 mm (19.69 in) or more.
2. Use a clip or other device to hold the seat belt at the center pillar belt opening.
3. Pass a thin wire through the through-anchor belt opening. Hold both ends of the wire and pull taut while moving it up and down several times along the belt opening surface to remove dirt.
4. Any dirt that cannot be removed with the wir e can be removed by cleaning the opening with a clean
cloth.
5. Apply tape at the point where the belt contacts the through-anchor belt opening.
NOTE:
Apply the tape so that there is no looseness or wrinkling.
6. Remove the clip holding the seat belt and check that the belt returns smoothly.
7. Repeat steps above as necessary to check the other seat belts.
SEAT BELT RETRACTOR ON-VEHICLE CHECK
Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)
NOTE:
All seat belt retractors are of the Emergency Locking Retractors (ELR) type. In an emergency (sudden stop)
the retractor will lock and prevent the belt from ext ending any further. All 3-point type seat belt retractors
except the driver's seat belt also have an Automati c Locking Retractors (ALR) mode. The ALR mode (also
called child restraint mode) is used when installing child seats. The ALR mode is activated when the seat belt
is fully extended. When the belt is then retracted partiall y, the ALR mode automatically locks the seat belt in a
specific position so the belt cannot be extended any furt her. To cancel the ALR mode, allow the seat belt to
fully wind back into the retractor.
Check the seat belt retractors using the following test(s ) to determine if a seat belt retractor and belt assembly
is operating properly.
ELR Function Stationary Check
Grasp the shoulder belt and pull forward quickly. The re tractor should lock and prevent the belt from extending
further.
ALR Function Stationary Check
1. Pull out entire length of seat belt from retractor until a click is heard.
2. Retract the belt partially. A clicking noise should be hear d as the belt retracts indicating that the retractor is
in the Automatic Locking Retractor (ALR) mode.
3. Grasp the seat belt and try to pull out the retractor. The belt must lock and not extend any further. If neces-
sary replace the seat belt retractor and belt assembly.
4. Allow the entire length of the belt to re tract to cancel the automatic locking mode.
ELR Function Moving Check
WARNING:
Perform the following test in a safe, open area clear of other vehicles and obstructions (for example, a
large, empty parking lot). Road surface must be p aved and dry. DO NOT perform the following test on
wet or gravel roads or on public streets and highw ays. This could result in an accident and serious
personal injury. The driver and passenger must be prepared to brace themselves in the event the
retractor does not lock.
1. Fasten drivers seat belt. Buckle a passenger in to the seat for the belt that is to be tested.
Revision: March 2010 2008 QX56

SE-1
BODY INTERIOR
C
DE
F
G H
I
K L
M
SECTION SE
A
B
SE
N
O P
CONTENTS
SEAT
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Work Flow ........................................................... ......3
INSPECTION AND ADJUSTMENT .....................5
Preliminary Check ............................................... ......5
FUNCTION DIAGNOSIS ...............................6
THIRD ROW POWER FOLDING SEAT ......... .....6
System Description ............................................. ......6
Component Parts Location ........................................7
Component Description .............................................7
COMPONENT DIAGNOSIS ..........................8
POWER SEAT .....................................................8
Wiring Diagram — Passenger Side — ................ ......8
HEATED SEAT ...................................................12
Description ..............................................................12
Wiring Diagram .......................................................13
THIRD SEAT ......................................................18
Power Supply and Ground Circuit Check for Third
Row Power Folding Seat Control Unit ................. ....
18
Third Row Power Folding Seat Switch ....................19
Third Row Power Folding Seat Motor .....................19
ECU DIAGNOSIS .........................................21
THIRD ROW POWER FOLDING SEAT CON-
TROL UNIT .........................................................
21
Reference Value ................................................. ....21
Wiring Diagram .......................................................23
DTC Index ...............................................................28
Fail Safe ..................................................................29
SYMPTOM DIAGNOSIS ..............................30
THIRD ROW POWER FOLDING SEAT ......... ....30
Symptom Table ................................................... ....30
NONE OF THE THIRD ROW POWER FOLD-
ING SEATS WILL OPERATE WITH ANY
SWITCH. ............................................................
31
None of the Third Row Power Folding Seats Will
Operate With Any Third Row Power Folding Seat
Switch .................................................................. ....
31
ONLY ONE THIRD ROW POWER FOLDING
SEAT WILL OPERATE. ....................................
32
Only One Third Row Power Folding Seat Will Op-
erate .................................................................... ....
32
THIRD ROW POWER FOLDING SEAT WILL
OPERATE IN ONLY ONE DIRECTION. ...........
34
Third Row Power Folding Seat Will Operate in
Only One Direction .............................................. ....
34
THIRD ROW POWER FOLDING SEAT WILL
STOP SHORT OF IT’S FULLY UP OR DOWN
POSITION. .........................................................
35
Third Row Power Folding Seat Stops Short of its
Fully Up or Down Position .......................................
35
THIRD ROW POWER FOLDING SEAT
MAKES EXCESSIVE NOISE WHILE MOV-
ING. ...................................................................
36
Third Row Power Folding Seat Makes Excessive
Noise While Moving ............................................. ....
36
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
37
Work Flow ................................................................37
Generic Squeak and Rattle Troubleshooting ...........39
Diagnostic Worksheet ..............................................41
PRECAUTION ..............................................43
PRECAUTIONS .................................................43
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
43
Revision: March 2010 2008 QX56

INSPECTION AND ADJUSTMENTSE-5
< BASIC INSPECTION >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
INSPECTION AND ADJUSTMENT
Preliminary CheckINFOID:0000000001735710
1.FOREIGN OBJECTS
Check the following:
• objects on or behind the seats that could cause binding
• objects under the seats that may be in terfering with the seat’s moving parts
Are there any foreign objects that could be causing interference with the seats?
YES >> Remove objects.
NO >> GO TO 2.
2.WIRING CONNECTIONS
1. Disconnect third row power folding seat c ontrol unit and seat motor harness connectors.
2. Check terminals for damage or loose connections.
3. Reconnect harness connectors.
Are any connectors damaged or loose?
YES >> Repair or replace damaged parts.
NO >> GO TO 3.
3.POWER AND GROUND
Check power supply and ground circuits for third row power folding seat control unit. Refer to SE-18, "
Power
Supply and Ground Circuit Check for Third Row Power Folding Seat Control Unit".
Is the inspection result normal?
YES >> Refer to SE-28, "DTC Index".
NO >> Repair or replace as necessary.
Revision: March 2010 2008 QX56

THIRD ROW POWER FOLDING SEATSE-7
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
Component Parts LocationINFOID:0000000001735712
Component DescriptionINFOID:0000000001735713
ALJIA0088ZZ
1. Third row power folding seat control unit B401, B402 2. A/T Assembly F9 3. Third row power folding seat switches
A: Third row power folding seat sw itch passenger side (front) B162
B: Third row power folding seat switch driver side (front) B164
C: Third row power folding seat switch passenger side (rear) B163
D: Third row power folding seat switch driver side (rear) B165
4. Third row power folding seat motors
A: RH (40%) seat B426
B: LH (60%) seat B403
Component Function
Third row power folding seat control unit • Receive inputs from third row power folding seat switches and A/T assembly (trans-
mission range switch)
• Drive third row powe r folding seat motors
• Performs self-diagnostics
A/T assembly Provide transmission range switch signal to third row power folding seat control unit
Third row power folding seat switches Provide fold up/fold down ground signals to third row power folding seat control unit
Third row power folding seat motors • Fold seats up and down
• Provide feedback signals to third row power folding seat control unit
Revision: March 2010
2008 QX56

POWER SEATSE-9
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
ALJIA0072GB
Revision: March 2010 2008 QX56

POWER SEATSE-11
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
ALJIA0074GB
Revision: March 2010 2008 QX56

HEATED SEATSE-13
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
Wiring DiagramINFOID:0000000001735717
AAJWA0043GB
Revision: March 2010 2008 QX56

HEATED SEATSE-15
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
AWJIA0085GB
Revision: March 2010 2008 QX56

HEATED SEATSE-17
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
AAJIA0062GB
Revision: March 2010 2008 QX56

THIRD SEATSE-19
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
Third Row Power Folding Seat SwitchINFOID:0000000001735719
1.CHECK THIRD ROW POWER FOLD ING SEAT SWITCH OPERATION
1. Turn ignition switch OFF.
2. Disconnect third row power folding seat switch.
3. Check continuity between third row power folding seat switch terminals 2, 3 and 4.
Do you have continuity?
YES >> Inspection End.
NO >> Replace third row power folding seat switch.
Third Row Power Folding Seat MotorINFOID:0000000001735720
1.CHECK MOTOR OPERATION
1. Turn ignition switch OFF.
2. Disconnect third row power folding seat motor connector B403 or B426.
3. Check operation by applying battery voltage to motor terminals 3 and 4.
CAUTION:
• Do not operate motor for more than 3 seconds.
• Be careful not to overheat the harness.
• Third row power folding seat control unit may have to
relearn fold up/down positions after testing.
Does the motor rotate in both directions?
YES >> GO TO 2.
NO >> Replace third row power seat motor. Refer to SE-60, "
Exploded View".
2.CHECK RESISTANCE IN MOTOR
Terminals Condition Continuity
2 4 Press switch button to fold up. Yes
3 4 Press switch button to fold down. Yes
ALJIA0089ZZ
LH (60%) seat
Terminal MotorSeat
3 (Battery positive) - 4 (Battery negative) Rotates counter-clockwise Up
4 (Battery positive) - 3 (Battery negative) Rotates clockwise Down
AWJIA0359ZZ
RH (40%) seat
Terminal MotorSeat
3 (Battery positive) - 4 (Battery negative) Rotates counter-clockwise Down
4 (Battery positive) - 3 (Battery negative) Rotates clockwise Up
Revision: March 2010 2008 QX56