Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Tundra 2000-2006 Approved 04-06 techinfo.toyota.com ileaf 06toyrm 06toypdf 06rmsrc 06tundra be pscsy insp
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BE-184
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
BE2KP-01
Tilt Lifter INSPECTION
Up
1. INSPECT POWER SEAT SWITCH CONTINUITY
Up
Slide switch:
Switch Position Tester Connection Specified Condition
FRONT 1 - 9, 4 - 6 Continuity
Down OFF 4-6-9 Continuity
Down Reclining
BACK 1 - 6, 4 - 9 Continuity
Front tilt switch:
Forward
Rear Switch Position Tester Connection Specified Condition
UP 1 - 10, 4 - 5 Continuity
OFF 4 - 5 - 10 Continuity
Front Back DOWN 1 - 5, 4 - 10 Continuity
Rear lifter switch:
Switch Position Tester Connection Specified Condition
UP 1 - 7, 4 - 8 Continuity
OFF 4-7-8 Continuity
I11912 DOWN 1 - 8, 4 - 7 Continuity
Reclining switch:
Switch Position Tester Connection Specified Condition
FORWARD 1 - 3, 2 - 4 Continuity
OFF 2-3-4 Continuity
REAR 1 - 2, 3 - 4 Continuity
If the continuity is not as specified, replace the switch.
2. INSPECT LUMBAR SUPPORT SWITCH CONTINUITY
Switch Position Tester Connection Specified Condition
FORWARD 1 - 4, 2 - 3 Continuity
OFF 1-2-3 Continuity
RELEASE 1 - 3, 2 - 4 Continuity
4 3 21
If the continuity is not as specified, replace the switch.
FORWARD RELEASE
I20957
(a) (b) 3. 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
2 1 2 1 motor turns clockwise.
(b) Reverse the polarity, and check that the motor turns coun-
terclockwise.
If operation is not as specified, replace the seat adjuster.
I07253
BE-185
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
4. INSPECT SLIDE MOTOR PTC THERMISTOR OPERA-
2 1
TION
(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 move the seat cushion to the rear position.
(b) Continue to apply voltage, and check that current
changes to less than 1 A within 4 to 90 seconds.
I11936
(c) Disconnect the leads from the 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 cushion begins to
move forward.
If operation is not as specified, replace the seat adjuster.
I11937
(a) (b)
5. INSPECT FRONT TILT MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2. Check that the
2 1 motor turns clockwise.
2 1
(b) Reverse the polarity, and check that the motor turns coun-
terclockwise.
If operation is not as specified, replace the seat adjuster.
I07254
1
6. INSPECT FRONT TILT MOTOR PTC THERMISTOR OP-
2
ERATION
(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 the battery negative (-) terminal.
Then move the seat cushion to the highest position.
(b) Continue to apply voltage, and check that the current
changes to less than 1 A within 4 to 90 seconds.
N22086
(c) Disconnect the leads from the 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. Check that the seat cushion begins to
descend.
If operation is not as specified, replace the seat adjuster.
N22087
BE-186
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
(a) (b) 7. INSPECT LIFTER MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (-) lead to terminal 2. Check that the
2 1 2 1 motor turns clockwise.
(b) Reverse the polarity, and check that the motor turns coun-
terclockwise.
If operation is not as specified, replace the seat adjuster.
I07255
8. INSPECT LIFTER MOTOR PTC THERMISTOR OPERA-
2 1
TION
(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 the battery negative (-) terminal.
Then move the seat cushion to the lowest position.
(b) Continue to apply voltage, and check that the current
changes to less than 1 A within 4 to 90 seconds.
I11940
(c) Disconnect the leads from the 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. Check that the seat cushion begins to
ascend.
If operation is not as specified, replace the seat adjuster.
I11941
(a) (b)
9. 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
2 1 2 1 motor turns clockwise.
(b) Reverse the polarity, and check that the motor turns coun-
terclockwise.
If operation is not as specified, replace the seat adjuster.
I07256
10. INSPECT RECLINING MOTOR PTC THERMISTOR OP-
2 1
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 seatback to the most forward position.
(b) Continue to apply voltage, and check that the current
changes to less than 1 A within 4 to 90 seconds.
N21868
BE-187
BODY ELECTRICAL - POWER SEAT CONTROL SYSTEM
(c) Disconnect the leads from the 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 seatback begins to fall
backward.
If operation is not as specified, replace the seat adjuster.
N21869
11. 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 the release side.
I04163
(b) Reverse the polarity, and check that the lumbar support
2 1 moves forward.
If operation is not as specified, replace the lumbar support ad-
juster.
I05473
12. INSPECT LUMBAR SUPPORT MOTOR CIRCUIT
2 1
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. Move the lumbar support to the
front end position.
I04165
(b) Continue to apply voltage, and check that a circuit break-
2 1
er operation noise can be heard within 4 to 60 seconds.
(c) Reverse the polarity, and check that the lumbar support
begins to move to the release side within approximately
60 seconds.
If operation is not as specified, replace the lumbar support ad-
juster.
I04166
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