| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001YWM005X |
| Title: SEAT: REAR POWER SEAT CONTROL SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Indicator Circuit |
DESCRIPTION
The indicator lights is built into the fold seat switch. This indicator light receives power from the fold seat control ECU. It comes on or blinks when the system detects that an object is caught or when the seat operation conditions are not met.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CONFIRM INDICATOR CIRCUIT |
(a) Perform troubleshooting in accordance with the chart below.
Result
|
Result |
Proceed to |
|---|---|
|
No. 1 fold seat switch indicator circuit |
A |
|
No. 2 fold seat switch indicator circuit |
B |
|
|
2. |
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.
|
|
3. |
INSPECT NO. 1 FOLD SEAT SWITCH |
(a) Remove the No. 1 fold seat switch
.
(b) Apply battery voltage to the switch connector, and check that the fold seat switch assembly illuminates.
OK:
LH Side
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 2 (IND) Battery negative (-) → 4 (E) |
FOLD |
Illuminates |
|
RETURN |
Illuminates |
RH Side
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 2 (IND) Battery negative (-) → 5 (E) |
FOLD |
Illuminates |
|
RETURN |
Illuminates |
|
|
4. |
CHECK HARNESS AND CONNECTOR (BACK DOOR ECU - NO. 1 FOLD SEAT SWITCH) |
|
(a) Disconnect the V2 ECU connector. |
(b) Disconnect the O27 or O28 switch 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) - O27-4 (E) |
Always |
Below 1 Ω |
|
V2-17 (OCTY) - Body ground |
Always |
10 kΩ or higher |
RH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
V2-17 (OCTY) - O28-5 (E) |
Always |
Below 1 Ω |
|
V2-17 (OCTY) - Body ground |
Always |
10 kΩ or higher |
|
|
5. |
CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 1 FOLD SEAT SWITCH) |
|
(a) Disconnect the O34 or P20 ECU connector. |
(b) Disconnect the O27 or O28 switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
LH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O34-35 (IND1) - O27-2 (IND) |
Always |
Below 1 Ω |
|
O34-35 (IND1) - Body ground |
Always |
10 kΩ or higher |
RH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P20-35 (IND1) - O28-2 (IND) |
Always |
Below 1 Ω |
|
P20-35 (IND1) - Body ground |
Always |
10 kΩ or higher |
|
|
6. |
READ VALUE USING TECHSTREAM (REAR 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 / Main Body / Data List.
(e) According to the display on the Techstream, read the Data List.
Main Body
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
RL Door Courtesy SW |
Rear door courtesy light switch LH signal / ON or OFF |
ON: Rear door courtesy light switch LH ON OFF: Rear door courtesy light switch LH OFF |
- |
|
RR Door Courtesy SW |
Rear door courtesy light switch RH signal / ON or OFF |
ON: Rear door courtesy light switch RH ON OFF: Rear door courtesy light switch RH OFF |
- |
OK:
When rear door courtesy light switch operation is performed, the results are the same as above.
|
|
7. |
INSPECT NO. 2 FOLD SEAT SWITCH |
(a) Remove the No. 2 fold seat switch
.
(b) Apply battery voltage to the switch connector, and check that the fold seat switch assembly illuminates.
OK:
LH Side
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 2 (IND) Battery negative (-) → 4 (E) |
FOLD |
Illuminates |
|
RETURN |
Illuminates |
RH Side
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 2 (IND) Battery negative (-) → 5 (E) |
FOLD |
Illuminates |
|
RETURN |
Illuminates |
|
|
8. |
CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH - NO. 2 FOLD SEAT SWITCH) |
|
(a) Disconnect the O7 or P7 switch connector. |
(b) Disconnect the O26 or P12 switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
LH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O7-1 - O26-4 (E) |
Always |
Below 1 Ω |
|
O7-1 - Body ground |
Always |
10 kΩ or higher |
RH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P7-1 - P12-5 (E) |
Always |
Below 1 Ω |
|
P7-1 - Body ground |
Always |
10 kΩ or higher |
|
|
9. |
CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 2 FOLD SEAT SWITCH) |
|
(a) Disconnect the O34 or P20 ECU connector. |
(b) Disconnect the O26 or P12 switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
LH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O34-31 (IND3) - O26-2 (IND) |
Always |
Below 1 Ω |
|
O34-31 (IND3) - Body ground |
Always |
10 kΩ or higher |
RH Side
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P20-31 (IND3) - P12-2 (IND) |
Always |
Below 1 Ω |
|
P20-31 (IND3) - Body ground |
Always |
10 kΩ or higher |
|
|
|