2001 TOYOTA AVALON Service Repair Manual

I04162
Wire Harness Side
I04161
RELEASE FORWARD
I04162
Wire Harness Side BE-108
- BODY ELECTRICALPOWER SEAT CONTROL SYSTEM (w/o Driving
Position Memory)
1712 Author
: Date
:
2001 AVALON (RM808U)
6. INSPECT DRIVER'S LUMBAR SUPPORT SWITCH
CIRCUIT
(a) Disconnect the switch connector and connect the seat
wire harness to the floor wire harness.
(b) Inspect the connector on the wire harness side.
Tester connectionConditionSpecified condition
3 - GroundConstantContinuity
4 - GroundConstantBattery positive voltage
If circuit is not as specified, inspect the circuits connected to oth-
er parts.
7. INSPECT PASSENGER'S LUMBAR SUPPORT
SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
FORWARD1 - 4
2 - 3Continuity
OFF1 - 3
2 - 3Continuity
RELEASE1 - 3
2 - 4Continuity
If continuity is not as specified, replace the switch.
8. INSPECT PASSENGER'S LUMBAR SUPPORT
SWITCH CIRCUIT
(a) Disconnect the switch connector and connect the seat
wire harness to the floor wire harness.
(b) Inspect the connector on the wire harness side.
Tester connectionConditionSpecified condition
2 - GroundConstantContinuity
1 - GroundConstantBattery positive voltage
If circuit is not as specified, inspect the circuits connected to oth-
er parts.

N21865
(a)
(b)
2
112
N21866
21
N21867
2
1
N21865
(a)
(b)
21
1
2
N22086
21
- BODY ELECTRICALPOWER SEAT CONTROL SYSTEM (w/o Driving
Position Memory)BE-109
1713 Author
: Date
:
2001 AVALON (RM808U)
9. INSPECT SLIDE MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
10. INSPECT SLIDE MOTOR PTC THERMISTOR OPERA-
TION
( ): Passenger side
(a) Connect the positive (+) lead from the battery to terminal
1 (2), the positive (+) lead from the ammeter to terminal
2 (1) and the negative (-) lead to the battery negative (-)
terminal, then move the seat cushion to the front position.
(b) Continue to apply voltage, check that current changes to
less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 (1) and the negative (-)
lead to terminal 1 (2), check that the seat cushion begins
to move backwards.
If operation is not as specified, replace the seat adjuster.
11. INSPECT FRONT VERTICAL MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
12. INSPECT FRONT VERTICAL MOTOR PTC THERM-
ISTOR OPERATION
( ): Passenger side
(a) Connect the positive (+) lead from the battery to terminal
1 (2), the positive (+) lead from the ammeter to terminal
2 (1) and the negative (-) lead to the battery negative (-)
terminal, then move the seat cushion to the highest posi-
tion.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.

N22087
21
N21865
(a)
1(b)
2
2
1
N22088
21
N22089
21
N21865
(a)
(b)
2
1
1 2 BE-1 10
- BODY ELECTRICALPOWER SEAT CONTROL SYSTEM (w/o Driving
Position Memory)
1714 Author
: Date
:
2001 AVALON (RM808U)
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 (1) and the negative (-)
lead to terminal 1 (2), check that the seat cushion begins
to descend.
If operation is not as specified, replace the seat adjuster.
13. INSPECT REAR VERTICAL MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
14. INSPECT REAR VERTICAL MOTOR PTC THERM-
ISTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 (1), the positive (+) lead from the ammeter to terminal
1 (2) and the negative (-) lead to the battery negative (-)
terminal, then move the seat cushion to the highest posi-
tion.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 1 (2) and the negative (-)
lead to terminal 2 (1), check that the seat cushion begins
to descend.
If operation is not as specified, replace the seat adjuster.
15. INSPECT RECLINING MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.

N21868
21
N21869
21
I13315
1
2
I13316
1
2
I13317
2 1
- BODY ELECTRICALPOWER SEAT CONTROL SYSTEM (w/o Driving
Position Memory)BE-1 11
1715 Author
: Date
:
2001 AVALON (RM808U)
16. INSPECT RECLINING MOTOR PTC THERMISTOR OP-
ERATION
(a) Connect the positive (+) lead from the battery to terminal
2, the positive (+) lead from the ammeter to terminal 1 and
the negative (-) lead to the battery negative (-) terminal,
then recline the seat back to the most forward position.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 1 and the negative (-)
lead to terminal 2, check that the seat back begins to fall
backward.
If operation is not as specified, replace the seat adjuster.
17. INSPECT LUMBAR SUPPORT MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2, check that the
lumbar support moves to release side.
(b) Reverse the polarity, check that the lumbar support
moves forward.
If operation is not as specified, replace the seat adjuster.
18. INSPECT LUMBAR SUPPORT MOTOR CIRCUIT
BREAKER OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (-) lead to terminal 1 on the lumbar
support motor connector and move the lumbar support to
front end position.

I13318
21
BE-1 12- BODY ELECTRICALPOWER SEAT CONTROL SYSTEM (w/o Driving
Position Memory)
1716 Author
: Date
:
2001 AVALON (RM808U)
(b) Continue to apply voltage, check that a circuit breaker op-
eration noise can be heard within 4 to 60 seconds.
(c) Reverse the polarity, check that the lumbar support be-
gins to move release side with in spproximately 60 se-
conds.
If operation is not as specified, replace the motor.

BE0IR-03
I12538
Instrument Panel Junction Block

PWR Seat Fuse

ECU-B Fuse
Reclining Motor Front Vertical Motor
Power Seat
Switch
Rear Vertical Motor
Reclining Motor
Power Seat SwitchRear Vertical Motor
Slide Motor
Front Vertical Motor BE-104
- BODY ELECTRICALPOWER SEAT CONTROL SYSTEM (w/o Driving
Position Memory)
1708 Author
: Date
:
2001 AVALON (RM808U)
POWER SEAT CONTROL SYSTEM (w/o Driving Position
Memory)
LOCATION

BE0HG-33
BE-80
- BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
1684 Author
: Date
:
ADJUSTMENT
HOW TO RESET POWER WINDOW MOTOR (LIMIT SWITCH)
NOTICE:
If the jam protection function is not functioning properly, perform the following procedures.
HINT:
It is necessary to reset the power window motor (in initial position for the limit switch) when separating the
window regulator from the power window motor or operating the window regulator with the door glass not
installed.
(a) Remove the power window motor.
HINT:
Place matchmarks on the power window motor and window regulator gear.
(b) Connect the power window motor and power window switch to the wire harness of the vehicle.
(c) Turn the ignition switch ON.
(d) Press the power window UP switch until the motor completes 6 to 10 rotations (4 seconds of rotation
or more).
(e) Assemble the power window motor and regulator.
HINT:

Install the motor when the regulator arm is below the middle point.

Align the matchmarks on the power window motor and window regulator gear when installing the pow-
er window motor.
(f) Assemble the power window regulator and door glass.
HINT:
Never rotate the motor downward until the completion of the window glass installation.
(g) Connect the power window switch to the wire harness and turn the ignition switch ON.
(h) Repeat UP and DOWN operation several times manually.
(i) Check AUTO UP " AUTO DOWN automatic operation is normal.
NOTICE:

The jam protection function does not operate immediately after performing reset.

If the jam protection function is triggered and the window lowers after the window has been fully
closed by AUTO UP operation (step i), reset the power window motor again.
(j) Check the power window function.

I12857
1
14
BE1DW-01
I12858
25
I14262
1 2
3 4 5 6
- BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE-73
1677 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
1. Using an ammeter:
INSPECT ONE TOUCH POWER WINDOW SYSTEM/
CURRENT OF CIRCUIT
(a) Disconnect the connector from the master switch.
(b) Connect the positive (+) lead from the ammeter to termi-
nal 1 on the wire harness side connector and the negative
(-) lead to negative (-) terminal of the battery.
(c) Connect the positive (+) lead from the battery to terminal
14 on the wire harness side connector.
(d) As the window goes down, check that the current flow is
approximately 7 A.
(e) Check that the current increases up to approximately
14.5 A or more when the window stops going down.
HINT:
The PTC opens some 4 - 90 seconds after the window stops
going down, so that check must be made before the PTC oper-
ates.
If the operation is as specified, replace the driver door ECU.
2. Using an ammeter with a current-measuring probe:
INSPECT ONE TOUCH POWER WINDOW SYSTEM/
CURRENT OF CIRCUIT
(a) Remove the driver door ECU with connectors connected.
(b) Attach a current-measuring probe to terminal 25 of the
wire harness.
(c) Turn the ignition switch ON and set the power window
switch in the down position.
(d) As the window goes down, check that the current flow is
approximately 7 A.
(e) Check that the current increases up to approximately
14.5 A or more when the window stops going down.
HINT:
The PTC opens some 4 - 90 seconds after the window stops
going down, so that check must be made before the PTC oper-
ates.
If operation is as specified, replace the driver door ECU.
3. INSPECT REAR POWER WINDOW SWITCH CONTI-
NUITY
Switch positionTester connectionSpecified condition
UP5 - 4, 2 - 6Continuity
OFF4 - 6, 2 - 6No continuity
DOWN2 - 5, 4 - 6Continuity
If continuity is not as specified, replace the switch.