Page 4289 of 4647

SE-90
AUTOMATIC DRIVE POSITIONER
Revision: 2007 April2007 M35/M45
OK or NG
OK >> Replace driver seat control unit.
NG >> Replace automatic drive positioner control unit.
Check Lumbar Support Circuit NIS0026Y
1. CHECK LUMBAR SUPPORT SWITCH
1. Turn ignition switch OFF.
2. Disconnect lumbar support switch connector.
3. Check voltage between lumbar support switch connector and
ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between fuse block (J/B) and
lumbar support switch.
2. CHECK LUMBAR SUPPORT SWITCH
Check continuity lumbar support switch connector.
OK or NG
OK >> GO TO 3.
NG >> Replace lumbar support switch.
Terminals
Voltage (V)
(Approx.) (+)
(–)
Lumbar support
switch connectorTerminal
B212 55 Ground Battery voltage
PIIB6204E
Lumbar
support switchTerminalCondition of
lumbar support switchContinuity
B2125557FORWARD Yes
Other than above No
58BACKWARD Yes
Other than above No
5657FORWARD No
Other than above Yes
58BACKWARD No
Other than above Yes
PIIB6205E
Page 4290 of 4647
AUTOMATIC DRIVE POSITIONER
SE-91
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
3. CHECK LUMBAR SUPPORT MOTOR HARNESS
1. Disconnect lumbar support motor connector.
2. Check continuity between lumbar support switch connector and
lumbar support motor connector.
3. Check continuity between lumbar support switch connector and
ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK LUMBAR SUPPORT SWITCH GROUND CIRCUIT
Check continuity between lumbar support switch connector and
ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between lumbar support
switch and ground.
AB
Continuity
Lumbar support
switch connectorTerminalLumbar support
motor connectorTerminal
B21257
B21157
Ye s
58 58
A
GroundContinuity
Lumbar support switch
connectorTerminal
B21257
No
58
PIIB6206E
Lumbar support switch
connectorTerminal
GroundContinuity
B212 56 Yes
PIIB6207E
Page 4291 of 4647
SE-92
POWER SEAT(PASSENGER SIDE)
Revision: 2007 April2007 M35/M45
POWER SEAT(PASSENGER SIDE)PFP:87050
SchematicNIS0028P
TIWT2055E
Page 4292 of 4647
POWER SEAT(PASSENGER SIDE)
SE-93
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
Wiring Diagram — SEAT —NIS00270
TIWT2056E
Page 4293 of 4647
SE-94
POWER SEAT(PASSENGER SIDE)
Revision: 2007 April2007 M35/M45
TIWT2057E
Page 4294 of 4647
POWER SEAT(PASSENGER SIDE)
SE-95
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
TIWT2058E
Page 4295 of 4647

SE-96
POWER SEAT(REAR)
Revision: 2007 April2007 M35/M45
POWER SEAT(REAR)PFP:88010
Component Parts and Harness Connector LocationNIS00272
System DescriptionNIS00273
The rear power seat (LH / RH) retreats when the auto return cancel switch is turned on and each door is
opened.
When the rear power seat switch turned on, or auto return cancel switch is canceled, an auto return is discon-
tinued.
Power is all time supplied
through 50A fusible link [letter F, located in the fuse block (J/B)],
to rear LH seat control unit, rear RH seat control unit terminal 1.
REAR POWER SEAT LH AND RH OPERATION
When rear power seat switch is forward, ground is supplied
to rear seat control unit terminal 10,
through rear power seat switch terminal 2,
through rear power seat switch terminal 3,
through body grounds B5, B40, B131.
When rear seat control unit receives power seat switch forward signal, power is supplied
through rear seat control unit terminal 2,
to rear seat sliding motor terminal 3.
PIIB5889E
1.Fuse, fusible link and relay block
(J/B)2.a: Rear power seat switch LH B504
b: Automatic return cancel switch
B508
c: Rear power seat switch RH B5553.Rear seat control unit
B303, B304 (LH) B353, B354 (RH)
(View with the rear seatback
removed)
4.Rear seat sliding motor
B311 (LH), B361 (RH)
(View with the rear seat cushion
removed)5.Rear door switch
B53 (LH), B403 (RH)
Page 4296 of 4647

POWER SEAT(REAR)
SE-97
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
Then ground is supplied
through rear seat sliding motor terminals 5,
through body grounds B5, B40, B131.
When power and ground are supplied, rear power seat slide moves forward.
When rear power seat switch is backward, ground is supplied
to rear seat control unit terminal 15,
through rear power seat switch terminal 1,
through rear power seat switch terminal 3,
through body grounds B5, B40, B131.
When rear seat control unit receives power seat switch backward signal, power is supplied
to rear seat control unit terminal 7,
through rear seat sliding motor terminal 4.
Then ground is supplied
through rear seat sliding motor terminals 5,
through body grounds B5, B40, B131.
When power and ground are supplied, rear power seat slide moves backward.
REAR SEAT RETREAT FUNCTION
When rear door open, ground is supplied
to rear seat control unit terminal 16,
through rear door switch terminal 2,
When rear seat control unit receives automatic return cancel switch ON and rear door switch open signal,
power is supplied
through rear seat control unit terminal 7,
to rear seat sliding motor terminal 4.
Then ground is supplied
through rear seat sliding motor terminals 5,
through body grounds B5, B40, B131.
When power and ground are supplied, rear power seat slide moves backward.
When rear seat sliding motor is operated, ground is supplied
to rear seat control unit terminal 12,
through rear seat sliding motor terminal 1,
through rear seat sliding motor terminal 2,
through rear seat control unit terminal 19,
through rear seat control unit terminals 13,
through body grounds B5, B40, B131.
Then rear seat control unit receives rear power seat sliding sensor signal.
The rear power seat control unit controls the seat position of the system operation with the signal.