2009 INFINITI QX56 seats

THIRD ROW POWER FOLDING SEATSE-7
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Component Parts LocationINFOID:0000000003775442
Component DescriptionINFOID:0000000003775443
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 (PNP
switch)
• Drive third row powe r folding seat motors
• Performs self-diagnostics
A/T assembly Provide PNP 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: December 20092009 QX56

POWER SEATSE-9
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ABJIA0118GB
Revision: December 20092009 QX56

POWER SEATSE-11
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ABJIA0084GB
Revision: December 20092009 QX56

HEATED SEATSE-13
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Wiring DiagramINFOID:0000000003775446
ABJWA0031GB
Revision: December 20092009 QX56

HEATED SEATSE-15
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ABJIA0116GB
Revision: December 20092009 QX56

HEATED SEATSE-17
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ABJIA0086GB
Revision: December 20092009 QX56

THIRD SEATSE-19
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THIRD SEAT
Power Supply and Ground Circu it Check for Third Row Power Folding Seat Control
Unit
INFOID:0000000003775447
1.CHECK FUSES AND FUSIBLE LINK
Check for blown fuses or fusible link.
Are any fuses or fusible links blown?
YES >> Install new fuse. Eliminate cause of malfunction if fuse blows again.
NO >> GO TO 2
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect third row power folding seat control unit connectors B401 and B402.
2. Check voltage between third row power folding seat control unit harness connectors B401, B402 terminals 1, 8, 13, 14 and
ground.
Are the inspection results normal?
YES >> GO TO 3
NO >> Check harness for open between third row power folding seat control unit and fuse or fusible link.
3.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Check continuity between third row power folding seat control unit harness connector B402 terminals 16, 18, 21 and ground.
Do all terminals have ground?
YES >> Inspection End.
NO >> Check harness for ground.
Unit Power source Fuse or Fusible Link Location
Third row power folding seat control unit Battery
F
Fuse and fusible link box
19 Fuse block (J/B)
Ignition switch ON or START 14
TerminalsIgnition switch position
(+) (–) OFF ON START
Connector Terminal
A: B401 1
Ground Battery
voltage
80 VBattery
voltage
B: B402 13
Battery
voltage
14 Battery
voltage
ALJIA0274ZZ
Te r m i n a l s
Continuity
(+)
(–)
Connector Terminal
B402 16
Ground Yes
18
21
ALJIA0275ZZ
Revision: December 20092009 QX56

THIRD SEATSE-21
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Check resistance between motor terminals 3 and 4.
Is the resistance reading of the motor normal?
YES >> Inspection End.
NO >> Replace third row power seat motor. Refer to SE-56,
"Exploded View".
3 - 4 : Approx. 0.5
Ω
AWJIA0360ZZ
Revision: December 20092009 QX56