| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001YWV005X |
| Title: SEAT: REAR POWER SEAT CONTROL SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Reclining Motor Circuit |
DESCRIPTION
The fold seat control ECU receives switch operation signals from the No. 1 and No. 2 fold seat switch and rear power seat switch, and activates the power seat motors.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK POWER SEAT MOTOR (RECLINING MOTOR VOLTAGE) |
|
(a) Disconnect the a1 and a3 or Y1 and Y3 connectors. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
LH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
a1-1 (FWD) - Body ground |
Ignition switch ON Rear power seat switch LH forward |
11 to 14 V |
|
a1-2 (BACK) - Body ground |
Ignition switch ON Rear power seat switch LH backward |
11 to 14 V |
|
a3-1 (FWD) - Body ground |
Ignition switch ON Rear power seat switch LH forward |
11 to 14 V |
|
a3-2 (BACK) - Body ground |
Ignition switch ON Rear power seat switch LH backward |
11 to 14 V |
RH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
Y1-1 (FWD) - Body ground |
Ignition switch ON Rear power seat switch RH forward |
11 to 14 V |
|
Y1-2 (BACK) - Body ground |
Ignition switch ON Rear power seat switch RH backward |
11 to 14 V |
|
Y3-1 (FWD) - Body ground |
Ignition switch ON Rear power seat switch RH forward |
11 to 14 V |
|
Y3-2 (BACK) - Body ground |
Ignition switch ON Rear power seat switch RH backward |
11 to 14 V |
|
|
2. |
INSPECT POWER SEAT MOTOR (RECLINING MOTOR) |
|
(a) Remove the power seat motors (reclining motor)
|
(b) Check the operation of the No. 1 reclining motor.
(1) Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals.
OK:
|
Measurement Condition |
Specified Condition |
|---|---|
|
Battery positive (+) → 1 Battery negative (-) → 2 |
Motor gear rotates clockwise |
|
Battery positive (+) → 2 Battery negative (-) → 1 |
Motor rear rotates counterclockwise |
|
(c) Check the operation of the No. 2 reclining motor. (1) Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals. OK:
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - RECLINING MOTOR) |
|
(a) Disconnect the O33 or P19 ECU connector. |
(b) Disconnect the a1 or Y1 motor connector.
(c) Disconnect the a3 or Y3 motor connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
LH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O33-1 (FLD+) - a3-1 (FWD) |
Always |
Below 1 Ω |
|
O33-1 (FLD+) - Body ground |
Always |
10 kΩ or higher |
|
O33-2 (RCL+) - a1-1 (FWD) |
Always |
Below 1 Ω |
|
O33-2 (RCL+) - Body ground |
Always |
10 kΩ or higher |
|
O33-5 (FLD-) - a3-2 (BACK) |
Always |
Below 1 Ω |
|
O33-5 (FLD-) - Body ground |
Always |
10 kΩ or higher |
|
O33-6 (RCL-) - a1-2 (BACK) |
Always |
Below 1 Ω |
|
O33-6 (RCL-) - Body ground |
Always |
10 kΩ or higher |
RH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P19-1 (FLD+) - Y3-1 (FWD) |
Always |
Below 1 Ω |
|
P19-1 (FLD+) - Body ground |
Always |
10 kΩ or higher |
|
P19-2 (RCL+) - Y1-1 (FWD) |
Always |
Below 1 Ω |
|
P19-2 (RCL+) - Body ground |
Always |
10 kΩ or higher |
|
P19-5 (FLD-) - Y3-2 (BACK) |
Always |
Below 1 Ω |
|
P19-5 (FLD-) - Body ground |
Always |
10 kΩ or higher |
|
P19-6 (RCL-) - Y1-2 (BACK) |
Always |
Below 1 Ω |
|
P19-6 (RCL-) - Body ground |
Always |
10 kΩ or higher |
|
|
|