Page 1665 of 2234
720J1±01
B70987
LHD Models
RHD ModelsInstrument Panel J/B Assy
PWR SEAT H±fuse
Fuse Block Assy
PWR SEAT H±fuse
Instrument Panel J/B Assy
PWR SEAT H±fuse
Fuse Block Assy
PWR SEAT H±fuse
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
72±1
AVENSIS REPAIR MANUAL (RM1018E)
FRONT POWER SEAT CONTROL SYSTEM
LOCATION
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Page 1666 of 2234
B70314
Slide MotorLifter MotorSlide MotorFront Vertical Motor
Reclining Motor
Reclining Motor
Power Seat Switch Assy
(Lumbar Support)
Front Power Seat Switch RH
Lumbar Support Adjuster Motor
Front Power Seat Switch LH
72±2
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
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Page 1667 of 2234
720J2±01
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
72±3
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
SymptomSuspected AreaSee Page
Power seat does not operate
1. Front power seat switch
2. PWR SEAT H±fuse
3. Wire harness72±6
68±1
Only slide operation function does not operate
1. Front power seat switch
2. Slide motor
3. Wire harness
Only front vertical operation function does not operate
(Driver seat only)1. Front power seat switch
2. Front vertical motor
3. Wire harness
Only lifter operation function does not operate
(Driver seat only)1. Front power seat switch
2. Lifter motor
3. Wire harness
Only reclining operation function does not operate
1. Front power seat switch
2. Reclining motor
3. Wire harness
Only lumbar support operation function does not operate
(Driver seat only)1. Power seat switch assy (Lumbar support)
2. Lumbar support adjuster motor
3. Wire harness
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Page 1668 of 2234

720J3±01
B67823
Reclining Function
Lumbar Support
Function
Sliding Function
Front Vertical
Function
Lifter Function
72±4
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
ON±VEHICLE INSPECTION
1. CHECK POWER SEAT FUNCTION
(a) Check the basic function. (1) Check that each part functions properly (sliding,front vertical, lifter, reclining, lumbar support) when
operating the power seat switches.
2. CHECK POWER SEAT MOTOR ASSY (SLIDING, FRONT VERTICAL, LIFTER, RECLINING FUNCTIONS)
(a) Check the PTC operation inside the power seat motor.
NOTICE:
The inspection should be performed with the seat installed in the vehicl\
e.
Perform this inspection for every maximum position.
(1) Move the seat to any of the maximum positions by operating the power sea\
t switch and keep
the seat there for approx. 60 seconds.
(2) Try to operate the power seat past the maximum position using the power s\
eat switch and mea- sure the time until the electrical current is shut off (motor operation sound will stop, inspection
of current shut±off).
Standard: 4 to 90 seconds
(3) Turn the power seat switch off after the inspection of current shut±off and keep that condition
for approx. 60 seconds.
(4) Operate the power seat switch to move the seat to the opposite position and che\
ck that the motor operates.
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Page 1669 of 2234
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
72±5
AVENSIS REPAIR MANUAL (RM1018E)
3. CHECK LUMBAR SUPPORT ADJUSTER ASSY LH
(a) Inspect the PTC operation inside the lumber support motor.
NOTICE:
The inspection should be performed with the seat installed to the vehicl\
e.
(1) Move the lumbar support to either the foremost or rearmost position by opera\
ting the lumbar sup-port switch and keep it there for approx. 60 seconds.
(2) Try to move the lumbar support past the maximum position using the switch\
and measure the
time until the electrical current is shut off (motor operation sound will stop, inspection of current
shut±off).
Standard: 4 to 90 seconds
(3) Turn the lumbar support switch off after the inspection of current shut±off and keep that condition for approx. 60 seconds.
(4) Operate the lumbar support switch to move the lumbar support to the opposite po\
sition and check that the motor operates.
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Page 1670 of 2234
720J4±01
B60011
Reclining Switch
Slide Switch
Front Power Seat Switch
Lifter Switch
Front Vertical Switch
72±6
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. Driver side: INSPECT FRONT POWER SEAT SWITCH
(a) Inspect the resistance between the terminals when each switch is operated.
Standard:
Slide switch
Tester ConnectionSwitch PositionSpecified Condition
1 ± 9FRONT4 ± 6FRONT
4 ± 6OFFBelow 1 4 ± 9OFFBelow 1
1 ± 6REAR4 ± 9REAR
Front vertical switch
Tester ConnectionSwitch PositionSpecified Condition
1 ± 10UP4 ± 5UP
4 ± 5OFFBl 14 ± 10OFFBelow 1
151 ± 5DOWN410DOWN4 ± 10
Lifter switch
Tester ConnectionSwitch PositionSpecified Condition
171 ± 7UP48UP4 ± 8
4 ± 7OFFBelow 14 ± 8OFFBelow 1
1 ± 8DOWN4 ± 7DOWN
Reclining switch
Tester ConnectionSwitch PositionSpecified Condition
1 ± 3FRONT2 ± 4FRONT
2 ± 4OFFBelow 13 ± 4OFFBelow 1
1 ± 2REAR3 ± 4REAR
If the result is not as specified, replace the front power seat
switch.
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Page 1671 of 2234

B65447
Reclining Switch
Slide Switch
Front Power Seat Switch
B65442
Power Seat Switch Assy
(Lumbar Support)
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
72±7
AVENSIS REPAIR MANUAL (RM1018E)
2. Passenger side:
INSPECT FRONT POWER SEAT SWITCH
(a) Inspect the resistance between the terminals when each
switch is operated.
Standard:
Slide switch
Tester ConnectionSwitch ConditionSpecified Condition
1 ± 9FRONT4 ± 6FRONT
4 ± 6OFFBelow 1 4 ± 9OFFBelow 1
4 ± 9REAR1 ± 6REAR
Reclining switch
Tester ConnectionSwitch ConditionSpecified Condition
1 ± 3FRONT2 ± 4FRONT
2 ± 4OFFBelow 13 ± 4OFFBelow 1
1 ± 2REAR3 ± 4REAR
If the result is not as specified, replace the front power seat
switch.
3. Driver side seat:
INSPECT POWER SEAT SWITCH ASSY
(LUMBAR SUPPORT)
(a) Inspect the resistance between the terminals when the
switch is operated.
Standard:
Tester ConnectionSwitch ConditionSpecified Condition
1 ± 2HOLD3 ± 4HOLD
1 ± 2OFFBelow 1 4 ± 5OFFBelow 1
1 ± 3RELEASE4 ± 5RELEASE
If the result is not as specified, replace the power seat switch
assy.
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Page 1672 of 2234

B65859
Slide Motor
ClockwiseCounter±
clockwiseDriving Axis
B65859
Front Vertical
Motor
Clockwise
Counter±clockwise
Driving Axis
B65859
Lifter Motor
Clockwise
Counter±
clockwise
Driving Axis
72±8
±
SEAT FRONT POWER SEAT CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
4. INSPECT POWER SEAT MOTOR ASSY
(a) Inspect operation of the slide motor. (1) Check that the motor rotates smoothly when the
battery is connected to the motor connector termi-
nals.
Standard:
Tester ConnectionOperational Direction
Battery positive voltage 1
Battery negative voltage 2Clockwise
Battery positive voltage 2
Battery negative voltage 1Counterclockwise
If the result is not as specified, replace the motor assy.
(b) Driver side seat:
Inspect operation of the front vertical motor.
(1) Check that the motor rotates smoothly when thebattery is connected to the front vertical motor con-
nector terminals.
Standard:
Tester ConnectionOperational Direction
Battery positive voltage 1
Battery negative voltage 2Clockwise
Battery positive voltage 2
Battery negative voltage 1Counterclockwise
If the result is not as specified, replace the motor assy.
(c) Driver side seat:
Inspect operation of the lifter motor.
(1) Check that the motor rotates smoothly when thebattery is connected to the lifter motor connector
terminals.
Standard:
Tester ConnectionOperational Direction
Battery positive voltage 1
Battery negative voltage 2Clockwise
Battery positive voltage 2
Battery negative voltage 1Counterclockwise
If the result is not as specified, replace the motor assy.
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