INFINITI FX35 2005 Service Manual

SE-88
AUTOMATIC DRIVE POSITIONER
Revision: 2005 July 2005 FX
Memory Indicator Lamp Circuit CheckAIS002Y7
1. CHECK FUNCTION
With CONSULT-II
With “MEMORY SW INDCTR” in ACTIVE TEST, check operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Memory indicator lamp circuit is OK.
NG >> GO TO 2.
2. CHECK SEAT MEMORY SWITCH AND LUMBER SUPPORT SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect seat memory switch and lumber support switch connector.
3. Check voltage between seat memory switch and lumber support switch connector B158 terminal 11 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between fuse block (J/B) and
seat memory switch and lumber support switch.
3. CHECK HARNESS CONTINUITY
1. Disconnect driver seat control unit connector.
2. Check continuity between driver seat control unit connector B152 terminals 23 (Y/W), 36 (Y/G) and seat memory switch and
lumber support switch connector B158 terminals 23, 36.
3. Check continuity between driver seat control unit connector B152 terminals 23, 36 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between automatic drive positioned control unit and seat memory
switch and lumber support switch.
Test item Description
MEMORY SW
INDCTR The memory switch indicator is lit by receiving the drive signal.
PIIA0319E
11 (R/W) – Ground : Battery voltage
PIIA6705E
23 (Y/W) – 23 (Y/W) : Continuity should exist.
36 (Y/G) – 36 (Y/G) : Continuity should exist.
23 (Y/W) – Ground : Continuity should not exist.
36 (Y/G) – Ground : Continuity should not exist.
PIIA5077E

AUTOMATIC DRIVE POSITIONER SE-89
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Revision: 2005 July 2005 FX
4. CHECK SEAT MEMORY SWITCH INDICATOR SIGNAL
Check voltage between driver seat control unit connector B152 ter-
minals 23, 36 and ground.
OK or NG
OK >> Memory indicator lamp circuit is OK.
NG >> Replace seat memory switch and lumber support switch.
Uart Communication Line Circuit CheckAIS002Y8
1. CHECK UART LINE HERNESS
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit connector and automatic drive positioner control unit connector.
3. Check continuity between driver seat control unit connector B152 terminal 2, 8 and automatic drive positioner connector
M49 terminal 10, 26.
4. Check continuity between driver seat control unit connector B152 terminal 2, 8 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between driver seat control unit and automatic drive positioner.
2. CHECK UART LINE SIGNAL 1
1. Turn ignition switch ON.
2. Check signal between driver seat control unit connector ground, with oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Check the flowing.

When voltage signal dose not appear with a constant voltage (approx. 5V), replace driver seat
control unit.

When voltage signal dose not appear with a constant voltage (approx. 0V), replace automatic
drive positioner control unit.
23 (Y/W) – Ground : Battery voltage
36 (Y/G) – Ground : Battery voltage
PIIA5078E
2 (P) − 26 (W) : Continuity should exist.
8 (G/Y) − 10 (B) : Continuity should exist.
2 (P) − Ground : Continuity should not exist.
8 (G/Y) − Ground : Continuity should not exist.
PIIA5099E
Connector Te r m i n a l s
(Wire color) Condition Signal
(Reference value)
(+) (–)
B152 2 (P) Ground Seat
memory
switch 1 or
2 opera-
tion
PIIA5097EPIIA4814E

SE-90
AUTOMATIC DRIVE POSITIONER
Revision: 2005 July 2005 FX
3. CHECK UART LINE SIGNAL 2
Check signal between automatic driver positioner control unit connector ground, with oscilloscope.
OK or NG
OK >> GO TO 4.
NG >> Check the flowing.

When voltage signal dose not appear with a constant voltage (approx. 5V), replace automatic
driver seat control unit.

When voltage signal dose not appear with a constant voltage (approx. 0V), replace driver seat
control unit.
4. CHECK DRIVER SEAT CONTROL UNIT
Dose the automatic drive positioner operate, when the driver control unit exchanged?
Does seat memory function operate?
YES >> Replace automatic drive positioner control unit.
NG >> Replace driver seat control unit.
Lumber Support Circuit CheckAIS003C1
1. CHECK LUMBER SUPPORT SWITCH
1. Turn ignition switch OFF.
2. Disconnect seat memory switch and lumber support switch connector.
3. Check voltage between seat memory switch and lumber support switch connector B158 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between fuse block (J/B) and
seat memory switch and lumber support switch.
Connector Te r m i n a l s
(Wire color) Condition Signal
(Reference value)
(+) (–)
M49 10 (B) Ground Seat
memory
switch 1 or
2 opera-
tion
PIIA5098EPIIA4813E
1 (R) – Ground: : Battery voltage
PIIA6707E

AUTOMATIC DRIVE POSITIONER SE-91
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Revision: 2005 July 2005 FX
2. CHECK LUMBER SUPPORT SWITCH
Lumber support switch operate, check continuity seat memory switch and lumber support switch connector
B158 terminal 31, 32 and 1, 16B.
OK or NG
OK >> GO TO 3.
NG >> Replace power seat switch.
3. CHECK LUMBER SUPPORT MOTOR HARNESS
1. Disconnect lumber support motor connector.
2. Check continuity between seat memory switch and lumber sup- port switch connector B158 terminal 31, 32 and lumber support
motor connector B172 terminal 31, 32.
3. Check continuity between seat memory switch and lumber sup- port switch connector B158 terminal 31, 32 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between seat memory switch and lumber support switch and lumber support motor.
4. CHECK LUMBER SUPPORT SWITCH GROUND CIRCUIT
Check continuity between lumber support switch connector B158
terminal 16B and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between seat memory switch and lumber support switch and ground.
Con-
nector Terminal
Lumber support switch
condition Continuity
B158 31
1 BACKWARD Yes
16B Other than above No
32 1FORWARD Yes
16B Other than above No
PIIA6709E
31 (W) − 31 (W) : Continuity should exist.
32 (L) − 32 (L) : Continuity should exist.
31 (W) − Ground : Continuity should not exist.
32 (L) − Ground : Continuity should not exist.
PIIA6710E
16B (B) – Ground : Continuity should exist.
PIIA6708E

SE-92
POWER SEAT
Revision: 2005 July 2005 FX
POWER SEATPFP:87016
SchematicAIS003LF
TIWM0302E

POWER SEAT SE-93
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Revision: 2005 July 2005 FX
Wiring Diagram–SEAT– / For Driver SeatAIS002X1
TIWM0303E

SE-94
POWER SEAT
Revision: 2005 July 2005 FX
TIWM0304E

POWER SEAT SE-95
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Revision: 2005 July 2005 FX
Wiring Diagram–SEAT– / For Passenger SeatAIS002X2
TIWM0305E

SE-96
POWER SEAT
Revision: 2005 July 2005 FX
Trouble DiagnosisAIS003L4
A trouble diagnosis of a automatic drive positioner interlocking power seat is refer to SE-11, "AUTOMATIC
DRIVE POSITIONER" .

HEATED SEAT SE-97
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Revision: 2005 July 2005 FX
HEATED SEATPFP:87335
DescriptionAIS002X3

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

To replace heating unit, seat trim and pad should be separated.

Do not use any organic solvent, such as thinner, benzene, alcohol, etc. to clean trims.
SBT314