2002 TOYOTA AVENSIS Repair Manual

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
± SEATFRONT POWER SEAT CONTROL SYSTEM
72±1
AVENSIS REPAIR MANUAL (RM1018E)
FRONT POWER SEAT CONTROL SYSTEM
LOCATION

B70314
Slide Motor
Lifter Motor
Slide MotorFront Vertical Motor Reclining MotorReclining Motor
Power Seat Switch Assy
(Lumbar Support) Front Power Seat Switch RHLumbar Support Adjuster Motor
Front Power Seat Switch LH
72±2
± SEATFRONT POWER SEAT CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)

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




720J3±01
B67823
Reclining Function
Lumbar Support
Function
Sliding Function Front Vertical
Function Lifter Function
72±4
± SEATFRONT 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 vehicle.

Perform this inspection for every maximum position.
(1) Move the seat to any of the maximum positions by operating the power seat switch and keep
the seat there for approx. 60 seconds.
(2) Try to operate the power seat past the maximum position using the power seat 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 check that the motor
operates.

± SEATFRONT 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 vehicle.
(1) Move the lumbar support to either the foremost or rearmost position by operating 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 position and
check that the motor operates.

720J4±01
B60011
Reclining Switch
Slide Switch
Front Power Seat Switch
Lifter Switch
Front Vertical Switch
72±6
± SEATFRONT 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 1
4 ± 10OFFBelow 1

151 ± 5DOWN410DOWN4 ± 10
Lifter switch
Tester ConnectionSwitch PositionSpecified Condition
171 ± 7UP48UP4 ± 8
4 ± 7OFFBelow 1
4 ± 8OFFBelow 1

1 ± 8DOWN4 ± 7DOWN
Reclining switch
Tester ConnectionSwitch PositionSpecified Condition
1 ± 3FRONT2 ± 4FRONT
2 ± 4OFFBelow 1
3 ± 4OFFBelow 1

1 ± 2REAR3 ± 4REAR
If the result is not as specified, replace the front power seat
switch.

B65447
Reclining Switch
Slide Switch Front Power Seat Switch
B65442
Power Seat Switch Assy
(Lumbar Support)
± SEATFRONT 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 1
3 ± 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.

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.