| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001YWS005X |
| Title: SEAT: REAR POWER SEAT CONTROL SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Back Door Courtesy Switch Circuit |
DESCRIPTION
The fold seat control ECU receives signals from the back door courtesy switch and detects the state of the back door (open/close). If the ECU does not detect that the back door is open, the seat folding and return functions are not available.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
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1. |
READ VALUE USING TECHSTREAM (BACK DOOR COURTESY SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream ON.
(d) Enter the following menus: Body Electrical / Back Door P/W / Data List.
(e) According to the display on the Techstream, read the Data List.
Back Door P/W
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Back Door Courtesy Switch |
Back Door Courtesy Switch / ON or OFF |
ON: Back door opened OFF: Back door closed |
- |
OK:
When back door courtesy switch operation is performed, the results are the same as above.
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|
2. |
CHECK HARNESS AND CONNECTOR (BACK DOOR ECU - FOLD SEAT CONTROL ECU) |
(a) Disconnect the V2 ECU connector.
(b) Disconnect the O34 or P20 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
LH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
V2-17 (OCTY) - O34-5 (BDCY) |
Always |
Below 1 Ω |
|
V2-17 (OCTY) or O34-5 (BDCY) - Body ground |
Always |
10 kΩ or higher |
RH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
V2-17 (OCTY) - P20-5 (BDCY) |
Always |
Below 1 Ω |
|
V2-17 (OCTY) or P20-5 (BDCY) - Body ground |
Always |
10 kΩ or higher |
|
|
3. |
REPLACE BACK DOOR ECU |
(a) Temporarily replace the back door ECU with a new or normally functioning one
.
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|
4. |
CHECK POWER SEAT CONTROL SYSTEM (OPERATION) |
(a) Check the power folding function
.
OK:
Operate normally.
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