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BE-107
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
BE242-01
INSPECTION
Front Side 1. INSPECT DRIVER'S SEAT SWITCH CONTINUITY
Reclining Slide switch:
FORWARD BACKWARD Tester connection Switch position Specified condition
5 - 10
FRONT Continuity
C ti it
8-9
UP
5-9
OFF Continuity
C ti it
Rear 8-9
Vertical 5-9
BACK Continuity
C ti it
Down 8 - 10
Front Rear Rear vertical switch:
Slide
Tester connection Switch position Specified condition
2 - 10
UP Continuity
C ti it
6-7
1 2
2-7
3 4 56 OFF Continuity
C ti it
7 8 9 10 1112 6-7
2-7
N18029
DOWN Continuity
C ti it
6 - 10
Reclining switch:
Tester connection Switch position Specified condition
4 - 10
FORWARD Continuity
C ti it
7-9
4-9
OFF Continuity
C ti it
7-9
4-9
BACKWARD Continuity
C ti it
7 - 10
If the continuity is not as specified, replace the switch.
2. INSPECT PASSENGER'S SEAT SWITCH CONTINUITY
Front Side Slide switch:
Tester connection Switch position Specified condition
Reclining
FORWARD 4-8
BACKWARD FRONT Continuity
C ti it
5-7
4-7
OFF Continuity
C ti it
4-8
4-7
REAR C ti it
Continuity
8-8
Reclining switch:
Rear Front Tester connection Switch position Specified condition
Slide
2-5
FORWARD Continuity
C ti it
3-4
2-4
OFF Continuity
C ti it
1 2 3 3-4
4 5 678 2-4
BACKWARD Continuity
C ti it
3-5
N18030
If the continuity is not as specified, replace the switch.
2002 4RUNNER (RM887U)
Author : Date : 1575
BE-108
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
3. INSPECT LUMBAR SUPPORT SWITCH CONTINUITY
Tester connection Switch position Specified condition
1-4
FORWARD Continuity
C ti it
2-3
4 3 2 1 1-2-3 OFF Continuity
1-3
RELEASE Continuity
C ti it
2-4
FORWARD RELEASE
If the continuity is not as specified, replace the switch.
N18066 I22008 I22557
4. INSPECT SEAT SLIDE MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (-) lead to terminal 1, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
2 1 If the operation is not as specified, replace the motor.
N07798
5. INSPECT DRIVER'S SEAT SLIDE MOTOR PTC
THERMISTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 , the positive (+) lead from the ammeter to terminal 1 ,
2 1
and the negative (-) lead to battery negative (-) terminal,
and move the seat front end position.
(b) Continue to apply voltage, check the current changes to
less than 1 ampere within 4 to 90 seconds.
I06014
(c) Disconnect the lead from the terminals.
2 1 (d) Approximately 60 seconds later, connect the positive (+)
lead from battery to terminal 1 and the negative (-) lead
to terminal 2, then check that the seat begins to move
backwards.
If operation is not as specified, replace the motor.
I06015
6. INSPECT PASSENGER'S SEAT SLIDE MOTOR PTC
2 1
THERMISTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2,
and the negative (-) lead to battery negative (-) terminal,
and move the seat to the front end position.
(b) Continue to apply voltage, check the current changes to
less than 1 ampere within 4 to 90 seconds.
N21866
2002 4RUNNER (RM887U)
Author : Date : 1576
BE-109
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
(c) Disconnect the lead from terminals.
2 1
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (-)
lead to terminal 1, then check that the seat begins to move
backwards.
If the operation is not as specified, replace the motor.
N21867
7. INSPECT REAR VERTICAL MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (-) lead to terminal 1, then check that
the motor turns clockwise.
(b) Reverse the polarity, then check that the motor turns
counterclockwise.
2 1 If the operation is not as specified, replace the motor.
N07798
8. INSPECT REAR VERTICAL MOTOR PTC THERM-
2 1
ISTOR OPERATION
(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 battery negative (-) terminal, and
move the rear edge of the seat cushion to the highest
position.
(b) Continue to apply voltage, check the current changes to
Z14971 less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
2 1 (d) Approximately 60 seconds later, connect the positive (+)
lead from battery to terminal 1 and the negative (-) lead
to terminal 2, then check that the seat cushion begins to
descend.
If the operation is not as specified, replace the motor.
Z07469
9. INSPECT DRIVER'S SEAT RECLINING MOTOR OP-
ERATION
2 1 (a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2, and check that
the motor turns clockwise.
I22507 Z14969 I22558
2002 4RUNNER (RM887U)
Author : Date : 1577
BE-1 10
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
2 1 If the operation is not as specified, replace the motor.
I22508 Z14969 I22559
10. INSPECT PASSENGER'S RECLINING MOTOR OP-
ERATION
2 1 (a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2, and check that
the motor turns clockwise.
I22509 Z14969 I22560
(b) Reverse the polarity, check that the motor turns counter-
clockwise.
2 1
If the operation is not as specified, replace the motor.
I22510 Z14969 I22561
11. INSPECT DRIVER'S SEAT RECLINING MOTOR PTC
2 1
THERMISTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2,
and the negative (-) lead to battery negative (-) terminal,
and recline the seat back to the most forward position.
(b) Continue to apply voltage, check the current changes to
less than 1 ampere within 4 to 90 seconds.
I06023 (c) Disconnect the lead from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
2 1
lead from the battery to terminal 2 and the negative (-)
lead to terminal 1, check that the seat back starts to fall
backwards.
If the operation is not as specified, replace the motor.
I06024
2002 4RUNNER (RM887U)
Author : Date : 1578
BE-1 11
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
2 1
12. INSPECT PASSENGER'S SEAT RECLINING MOTOR
PTC THERMISTOR OPERATION
(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 battery negative (-) terminal,
and recline the seat back to the most forward position.
(b) Continue to apply voltage, check the current changes to
less than 1 ampere within 4 to 90 seconds.
N21868
(c) Disconnect the lead from terminals.
2 1
(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 starts to fall
backwards.
If the operation is not as specified, replace the motor.
N21869
13. INSPECT LUMBAR SUPPORT MOTOR OPERATION
2 1 (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.
I22501
(b) Reverse the polarity, check that the lumbar support
2 1 moves forward.
If the operation is not as specified, replace the motor.
I22502
14. INSPECT LUMBER SUPPORT MOTOR CIRCUIT
BREAKER OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2, the positive (+) lead from the ammeter to terminal 1,
2 1
and the negative (-) lead to terminal 1 on the lumbar sup-
port motor connector and move the lumbar support to
front end position.
I22503
2002 4RUNNER (RM887U)
Author : Date : 1579
BE-1 12
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
(b) Continue to apply voltage, check that there is a circuit
1 breaker operation noise within 4 to 60 seconds.
2 (c) Reverse the polarity, check that the lumbar support be-
gins to move to the release side within approximately 60
seconds.
If the operation is not as specified, replace the motor.
I22504
2002 4RUNNER (RM887U)
Author : Date : 1580
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