2009 INFINITI QX56 seat memory

AUTOMATIC DRIVE POSITIONER SYSTEMADP-25
< FUNCTION DIAGNOSIS >
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ENTRY ASSIST FUNCTION : System DiagramINFOID:0000000003775510
ENTRY ASSIST FUNCTION : System DescriptionINFOID:0000000003775511
OUTLINE
The seat and steering wheel are in the exiting position when either following condition (A or B) is satisfied, the
seat and steering wheel return from exiting position to the previous driving position.
NOTE:
 This function is set to OFF before delivery (initial setting).
 Further information for the system setting procedure. Refer to Owner’s Manual.
OPERATION PROCEDURE
1. A: Turn the ignition switch ON. B: Turn the ignition switch from OFF to ACC after closing the driver door.
2. Front seat LH and steering wheel will return from the exiting position to entry position.
OPERATION CONDITION
Satisfy all of the following items. The entry assist f unction is not performed if these items are not satisfied.
DETAIL FLOW
ALJIA0238GB
Item Request status
Seat, steering wheel The vehicle is not moved after performing the
exit assist function.
Switch inputs
 Power seat switch
 Pedal adjusting switch
 ADP steering switch
 Door mirror control switch
 Set switch
 Memory switch OFF
(Not operated)
A/T selector lever P position
Revision: December 20092009 QX56

ADP-26
< FUNCTION DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER SYSTEM
ENTRY ASSIST FUNCTION : Component Parts Location
INFOID:0000000004055688
Order Input Output Control unit condition 1 Door switch/Ignition
switch —
Driver seat control unit receives the signals of ignition switch signal
and front door switch from BCM via CAN communication.
2 — Motors (sliding, tilt) Driver seat control unit operates the sliding motor when the operating
conditions are satisfied. Driver seat control unit then requests the op-
eration of the tilt motor to the automatic drive positioner control unit
via UART communication. The automatic drive positioner control unit
operates the motor for a constant amount.
Sensors (sliding, tilt) — Sensors monitor the operating positions of seat and steering wheel
and then stops the operation of each motor when each part reaches
the recorded address.
ALJIA0347ZZ
1. A. Automatic drive positioner control
unit M33, M34
B. Pedal adjustin g motor assembly
E109, E110 2. A. Steering column
B. Key switch and ignition knob
switch M12
C. BCM M18, M19, M20 (view with
instrument panel removed) 3. A. Door mirror remo
te control switch
D10
B. Seat memory switch D5
4. Pedal adjusting switch M96 5 . A. Door mirrror LH D4, RH D107
B. Front door switch LH B 6. A. A/T selector lever
B. A/T shift selector (park position
switch) M203
7. A. Sliding motor LH B204 (driver seat
view), reclining motor LH B205, lift-
ing motor (front) B2 06, lifting motor
(rear) B207
B. Driver seat control unit B202,
B203
C. Power seat switch LH B208 8. A. ADP steering switch M16
B. Tilt sensor M85 and tilt motor M86
Revision: December 20092009 QX56

ADP-28
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (DRIVER SEAT C/U)
DIAGNOSIS SYSTEM (DRIVER SEAT C/U)
Diagnosis DescriptionINFOID:0000000003775514
The auto drive positioner system can be checked and diagnosed for component operation with CONSULT-III.
DIAGNOSTIC MODE
CONSULT-III FunctionINFOID:0000000003775515
SELF-DIAGNOSIS RESULTS
Refer to ADP-127, "DTC Index".
DATA MONITOR
Diagnostic mode
[AUTO DRIVE POS.] Description
WORK SUPPORT Changes the setting of each function.
SELF-DIAG RESULTS Performs self-diagnosis for the auto drive positioner system and displays the results.
DATA MONITOR Displays input signals transmitted from various switches and sensors to driver seat con-
trol unit in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST Drive each output device.
ECU PART NUMBER Displays part numbers of driver seat control unit parts.
Monitor Item Unit Main
Signals Selection
From
Menu Contents
SET SW “ON/OFF” ××ON/OFF status judged from the setting switch signal.
MEMORY SW1 “ON/OFF” ××ON/OFF status judged from the seat memory switch 1 sig-
nal.
MEMORY SW2 “ON/OFF” ××ON/OFF status judged from the seat memory switch 2 sig-
nal.
SLIDE SW–FR “ON/OFF” ××ON/OFF status judged from the sliding switch (forward) sig-
nal.
SLIDE SW–RR “ON/OFF” ××ON/OFF status judged from the sliding switch (backward)
signal.
RECLN SW–FR “ON/OFF” ××ON/OFF status judged from the reclining switch (forward)
signal.
RECLN SW–RR “ON/OFF” ××ON/OFF status judged from the reclining switch (backward)
signal.
LIFT FR SW–UP “ON/OFF” ××ON/OFF status judged from the lifting switch front (up) sig-
nal.
LIFT FR SW–DN “ON/OFF” ××ON/OFF status judged from the lifting switch front (down)
signal.
LIFT RR SW–UP “ON/OFF” ××ON/OFF status judged from the lifting switch rear (up) sig-
nal.
LIFT RR SW–DN “ON/OFF” ××ON/OFF status judged from the lifting switch rear (down)
signal.
MIR CON SW–UP “ON/OFF” ××ON/OFF status judged from the mirror switch (up) signal.
MIR CON SW–DN “ON/OFF” ××ON/OFF status judged from the mirror switch (down) signal.
MIR CON SW–RH “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (passenger side) signal.
MIR CON SW–LH “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (driver
side) signal.
Revision: December 20092009 QX56

ADP-30
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (DRIVER SEAT C/U)
WORK SUPPORT
MIRROR MOTOR LH Activates/deactivates the mirror motor (driver side).
MEMORY SW INDCTR Turns ON/O FF the memory indicator.
Test item Description
Work item Content Item
SEAT SLIDE VOLUME SET The amount of seat sliding for entry/exit assist can be selected
from 3 items. 40 mm
80 mm
150 mm
EXIT SEAT SLIDE SETTING Entry/exit assist (seat) can be selected:
ON (operated) – OFF (not operated) ON
OFF
EXIT TILT SETTING Entry/exit assist (tilt) can be selected:
ON (operated) – OFF (not operated) ON
OFF
Revision: December 20092009 QX56

ADP-44
< COMPONENT DIAGNOSIS >
B2128 UART COMMUNICATION LINE
B2128 UART COMMUNICATION LINE
DescriptionINFOID:0000000003775544
Driver seat control unit performs UART communication with the automatic drive positioner control unit using 2
communication lines, TX and RX line. Driver seat cont rol unit receives the operation signals of pedal adjusting
switch, door mirror remote control switch, set switch and memory switch and the position signals of adjustable
pedal sensor and door mirror sensor from the automatic drive positioner control unit and transmits the opera-
tion request signal.
DTC LogicINFOID:0000000003775545
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. STEP 1
Turn ignition switch ON.
>> GO TO 2
2. STEP 2
Operate pedal adjusting switch for more than 2 seconds.
>> GO TO 3
3. PROCEDURE 3
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES >> Perform diagnosis procedure. Refer to ADP-44, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000003775546
1. CHECK UART COMMUNICA TION LINE CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat contro l unit and automatic drive posi-
tioner control unit.
3. Check continuity between driver seat control unit harness con- nector and automatic drive positi oner control unit harness con-
nector.
4. Check continuity between driver seat control unit harness connector and ground.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause B2128 UART COMM The communication between driver seat control unit
and automatic drive positioner control unit is interrupt-
ed for a period of time.  UART communication line
(UART communication line is
open or shorted)
 Driver seat control unit
 Automatic drive positioner control unit
Driver seat control unit connector Te r m i n a lAutomatic drive positioner
control unit connector Terminal Continuity
B202 1
M33 10
Ye s
17 26
PIIA4598E
Revision: December 20092009 QX56

ADP-62
< COMPONENT DIAGNOSIS >
SEAT MEMORY SWITCH
SEAT MEMORY SWITCH
DescriptionINFOID:0000000003775577
The seat memory switch is installed on the front door LH trim. The operation signal is input to the automatic
drive positioner control unit when the memory switch is operated.
Component Function CheckINFOID:0000000003775578
1. CHECK FUNCTION
1. Select “MEMORY SW 1”, “MEMORY SW 2”, "SET SW" in “Data monitor” mode with CONSULT-III.
2. Check seat memory switch signal under the following conditions.
Is the indication normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-62, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775579
1. CHECK MEMORY SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and seat memory switch.
3. Check continuity between automat ic drive positioner control unit
harness connector and seat memory switch harness connector.
4. Check continuity between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2. CHECK MEMORY SW ITCH GROUND CIRCUIT
Monitor item Condition Status
MEMORY SW1 Memory switch 1 Push ON
Release OFF
MEMORY SW2 Memory switch 2 Push ON
Release OFF
SET SW Set switch Push ON
Release OFF
Automatic drive
positioner control unit connector Te r m i n a l
Seat memory
switch connector Terminal Continuity
M33 9
D5 1
Ye s
24 3
25 2
Automatic drive positioner control unit connector Terminal
GroundContinuity
M33 9
No
24
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PIIA4576E
Revision: December 20092009 QX56

SEAT MEMORY SWITCHADP-63
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Check continuity between seat memory switch harness connector
and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK SEAT MEMORY SWITCH
Refer to ADP-63, "Component Inspection"
.
Is the inspection result normal?
YES >> GO TO 4
NO >> Replace seat memory switch. Refer to ADP-167, "Removal and Installation"
.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace automatic drive posit ioner control unit. Refer to ADP-166, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Component InspectionINFOID:0000000003775580
1. CHECK SEAT MEMORY SWITCH
1. Turn ignition switch OFF.
2. Disconnect seat memory switch.
3. Check continuity between seat memory switch terminals.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace seat memory switch. Refer to ADP-167, "Removal and Installation"
.
Seat memory switch
connector Te r m i n a l
GroundContinuity
D5 4 Yes
PIIA4821E
Te r m i n a l Condition Continuity
Seat memory switch
4 1 Memory switch 1
Push Yes
Release No
2 Memory switch 2 Push Yes
Release No
3 Set switch Push Yes
Release No
LIIA1020E
Revision: December 20092009 QX56

SLIDING SENSORADP-75
< COMPONENT DIAGNOSIS >
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1. Disconnect driver seat control unit and sliding motor LH.
2. Check continuity between driver seat control unit harness con-
nector and sliding motor LH harness connector.
3. Check continuity between driver seat control unit harness con-
nector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK SEAT OPERATION
1. Connect driver seat control unit and sliding motor LH.
2. Check seat operation (except slidi ng operation) with memory function.
Is the inspection result normal?
YES >> Replace sliding motor LH. (Built in power seat frame assembly). Refer to SE-68, "Disassembly
and Assembly".
NO >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation"
.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Driver seat control
unit connector Te r m i n a l
Sliding motor
LH connector Terminal Continuity
B202 (A) 16
B204 (B) 3
Ye s
24 4
31 2
Driver seat control unit connector Te r m i n a l
GroundContinuity
B202 (A) 16
No
24
31
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Revision: December 20092009 QX56