INFINITI QX56 2006 Factory Service Manual

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

AUTOMATIC DRIVE POSITIONERSE-81
C
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F
G H
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K L
M A
B
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Revision: November 2009 2006 QX56
3. CHECK UART LINE HARNESS
1. Disconnect driver seat control unit and automatic drive posi- tioner control unit.
2. Check continuity between driver seat control unit connector P2 terminals 1, 17, and automatic drive positioner connector M33
terminals 10, 26.
3. Check continuity between driver seat control unit connector P2 terminals 1, 17 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK DRIVER SEAT CONTROL UNIT
Does the automatic drive positioner operate when the driver seat control unit is exchanged?
OK or NG
OK >> Replace driver seat control unit.
NG >> Replace automatic drive positioner control unit. 1 - 10
: Continuity should exist.
17 - 26 : Continuity should exist.
1 - Ground : Continuity should not exist.
17 - Ground : Continuity should not exist.
PIIA4598E

SE-82
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
Removal and InstallationEIS004YN
Refer to ACC-3, "ACCELERATOR CONTROL SYSTEM" and BR-6, "BRAKE PEDAL" .

POWER SEATSE-83
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G H
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K L
M A
B
SE
Revision: November 2009 2006 QX56
POWER SEATPFP:87016
Wiring Diagram — SEAT — for Passenger SeatEIS004YO
WIWA1406E

SE-84
HEATED SEAT
Revision: November 20092006 QX56
HEATED SEATPFP:87335
Description EIS004YP

When handling seat, be extremely careful not to scratch heating unit.

Front passenger seat cushion and seatbacks equipped with airbags cannot be disassembled. They are
replaced as assemblies only.

Do not use any organic solvent, such as thinner, benzene, alcohol, etc. to clean trim.
WIIA0031E

HEATED SEATSE-85
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F
G H
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K L
M A
B
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Revision: November 2009 2006 QX56
SchematicEIS004YQ
WIWA0586E

SE-86
HEATED SEAT
Revision: November 20092006 QX56
Wiring Diagram — HSEAT —EIS004YR
WIWA0587E

HEATED SEATSE-87
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F
G H
J
K L
M A
B
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Revision: November 2009 2006 QX56
WIWA0588E

SE-88
HEATED SEAT
Revision: November 20092006 QX56
WIWA0589E

HEATED SEATSE-89
C
DE
F
G H
J
K L
M A
B
SE
Revision: November 2009 2006 QX56
WIWA0590E