2008 INFINITI QX56 ignition

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Page 3143 of 4083

INFINITI QX56 2008 Factory Service Manual THIRD ROW POWER FOLDING SEAT CONTROL UNITSE-21
< ECU DIAGNOSIS >
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ECU DIAGNOSIS
THIRD ROW POWER FOLD ING SEAT CONTROL UNIT
Reference ValueINFOID:0000000001735721
TERMINA

Page 3150 of 4083

INFINITI QX56 2008 Factory Service Manual SE-28
< ECU DIAGNOSIS >
THIRD ROW POWER FOLDING SEAT CONTROL UNIT
DTC Index
INFOID:0000000001735723
NOTE:
To initiate a chime code sequence cycle, turn the ignition switch ON and OFF 3 times within 5

Page 3151 of 4083

INFINITI QX56 2008 Factory Service Manual THIRD ROW POWER FOLDING SEAT CONTROL UNITSE-29
< ECU DIAGNOSIS >
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Fail SafeINFOID:0000000001735724
The third row power folding seat will not operate under the following

THIRD ROW POWER FOLDING SEAT CONTROL UNITSE-29
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Fail SafeINFOID:0000000001735724
The third row power folding seat will not operate under the following conditions:
• Power supply to the third row power folding seat control unit falls below 9.0V
• One of the third row power folding seat switches is stuck closed
• The A/T selector lever is not in PARK position and the ignition switch is ON
DTCMalfunction Service Procedure
11 LH seat has traveled past normal fold
down position 1. Perform Preliminary Check. Refer to
SE-5, "
Preliminary
Check".
2. Check third row power folding seat motor LH Hall signal and ground circuits. Refer to SE-35, "
Third Row Power
Folding Seat Stops Short of its Fully Up or Down Posi-
tion".
3. Replace third row power folding seat motor LH. Refer to SE-60, "
Exploded View".
12
LH seat has traveled past normal fold up
position
13 LH seat actuation cycle has taken too
long and timed out 1. Perform Preliminary Check. Refer to
SE-5, "
Preliminary
Check".
2. Check third row power foldin g seat motor LH motor cir-
cuits. Refer to SE-32, "
Only One Third Row Power Fold-
ing Seat Will Operate".
3. Replace third row power folding seat motor LH. Refer to SE-60, "
Exploded View".
14 Third row power folding seat control unit
NVRAM data for LH seat position has
been corrupted Replace third row power folding seat control unit. Refer to
SE-
63, "Power seat cross beam".
15 Power supply to third row power folding
seat control unit has been interrupted
during LH seat fold up/down cycle 1. Perform Preliminary Check. Refer to
SE-5, "
Preliminary
Check".
2. Replace third row power folding seat control unit. Refer to SE-63, "
Power seat cross beam".
21 RH seat has traveled past normal fold
down position 1. Perform Preliminary Check. Refer to
SE-5, "
Preliminary
Check".
2. Check third row power foldin g seat motor RH Hall signal
and ground circuits. Refer to SE-35, "
Third Row Power
Folding Seat Stops Short of its Fully Up or Down Posi-
tion".
3. Replace third row power folding seat motor RH. Refer to SE-60, "
Exploded View".
22
RH seat has traveled past normal fold up
position
23 RH seat actuation cycle has taken too
long and timed out 1. Perform Preliminary Check. Refer to
SE-5, "
Preliminary
Check".
2. Check third row power fold ing seat motor RH motor cir-
cuits. Refer to SE-32, "
Only One Third Row Power Fold-
ing Seat Will Operate".
3. Replace third row power folding seat motor RH. Refer to SE-60, "
Exploded View".
24 Third row power folding seat control unit
NVRAM data for RH seat position has
been corrupted Replace third row power folding seat control unit. Refer to
SE-
63, "Power seat cross beam".
25 Power supply to third row power folding
seat control unit has been interrupted
during RH seat fold up/down cycle 1. Perform Preliminary Check. Refer to
SE-5, "
Preliminary
Check".
2. Replace third row power folding seat control unit. Refer
to SE-63, "
Power seat cross beam".
33 System normal or END of chime codes —
Revision: March 2010 2008 QX56

Page 3153 of 4083

INFINITI QX56 2008 Factory Service Manual NONE OF THE THIRD ROW POWER FOLDING SEATS WILL OPERATE WITH
ANY SWITCH.
SE-31
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NONE OF THE THIRD ROW POWER FOLDING SEATS WILL OPERATE
WITH ANY SWI

Page 3154 of 4083

INFINITI QX56 2008 Factory Service Manual SE-32
< SYMPTOM DIAGNOSIS >
ONLY ONE THIRD ROW POWER FOLDING SEAT WILL OPERATE.
ONLY ONE THIRD ROW POWER FOLDING SEAT WILL OPERATE.
Only One Third Row Power Folding Seat Will OperateINFOID:00000000017

Page 3156 of 4083

INFINITI QX56 2008 Factory Service Manual SE-34
< SYMPTOM DIAGNOSIS >
THIRD ROW POWER FOLDING SEAT WILL OPERATE IN ONLY ONE DIREC-
TION.
THIRD ROW POWER FOLDING SEAT WILL OPERATE IN ONLY ONE DI-
RECTION.
Third Row Power Folding Seat Will Ope

Page 3157 of 4083

INFINITI QX56 2008 Factory Service Manual THIRD ROW POWER FOLDING SEAT WILL STOP SHORT OF IT’S FULLY UP
OR DOWN POSITION.
SE-35
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THIRD ROW POWER FOLDING SEAT WI LL STOP SHORT OF IT’S F

Page 3165 of 4083

INFINITI QX56 2008 Factory Service Manual PRECAUTIONSSE-43
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004886

PRECAUTIONSSE-43
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004886906
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:0000000004886907
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: March 2010 2008 QX56

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