DESCRIPTION
When a switch of the fold seat switch assembly or No. 1 fold seat switch assembly is pushed, the fold seat control ECU receives a switch operation signal and operates each motor.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. | CHECK REAR POWER SEAT CONTROL SYSTEM (for Third Row) |
(a) Check that the rear power seat control system (for Third Row) function operates normally.
Result | Proceed to |
---|---|
Lifter motor (RH) does not operate normally. | A |
Reclining motor (RH) does not operate normally. | B |
Lifter motor (LH) does not operate normally. | C |
Reclining motor (LH) does not operate normally. | D |
B | ![]() | GO TO STEP 5 |
C | ![]() | GO TO STEP 8 |
D | ![]() | GO TO STEP 11 |
|
2. | INSPECT NO. 2 SEAT CUSHION FRAME SUB-ASSEMBLY RH (LIFTER MOTOR) |
(a) Remove the No. 2 seat cushion frame sub-assembly RH.
Click here
(b) Inspect the No. 2 seat cushion frame sub-assembly RH. (Lifter Motor)
Click here
NG | ![]() | REPLACE NO. 2 SEAT CUSHION FRAME SUB-ASSEMBLY RH |
|
3. | CHECK FOLD SEAT CONTROL ECU (RH SEAT) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
x13-4 - Body ground | Fold switch (RH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
x13-3 - Body ground | Return switch (RH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
4. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (RH SEAT) - NO. 2 SEAT CUSHION FRAME SUB-ASSEMBLY RH) |
(a) Disconnect the x16 fold seat control ECU (RH seat) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
x16-4 (FLD+) - x13-4 | Always | Below 1 Ω |
x16-4 (FLD+) or x13-4 - Body ground | Always | 10 kΩ or higher |
x16-8 (FLD-) - x13-3 | Always | Below 1 Ω |
x16-8 (FLD-) or x13-3 - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (RH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
5. | INSPECT NO. 2 SEAT BACKFRAME SUB-ASSEMBLY RH (RECLINING MOTOR) |
(a) Remove the No. 2 seatback frame sub-assembly RH.
Click here
(b) Inspect the No. 2 seatback frame sub-assembly RH. (Reclining Motor)
Click here
NG | ![]() | REPLACE NO. 2 SEATBACK FRAME SUB-ASSEMBLY RH |
|
6. | CHECK FOLD SEAT CONTROL ECU (RH SEAT) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
x14-3 - Body ground | Fold switch (RH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
x14-4 - Body ground | Return switch (RH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
7. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (RH SEAT) - NO. 2 SEATBACK FRAME SUB-ASSEMBLY RH) |
(a) Disconnect the x16 fold seat control ECU (RH seat) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
x16-3 (RCL+) - x14-3 | Always | Below 1 Ω |
x16-3 (RCL+) or x14-3 - Body ground | Always | 10 kΩ or higher |
x16-7 (RCL-) - x14-4 | Always | Below 1 Ω |
x16-7 (RCL-) or x14-4 - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (RH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
8. | INSPECT NO. 2 SEAT CUSHION FRAME SUB-ASSEMBLY LH (LIFTER MOTOR) |
(a) Remove the No. 2 seat cushion frame sub-assembly LH.
Click here
(b) Inspect the No. 2 seat cushion frame sub-assembly LH. (Lifter Motor)
Click here
NG | ![]() | REPLACE NO. 2 SEAT CUSHION FRAME SUB-ASSEMBLY LH |
|
9. | CHECK FOLD SEAT CONTROL ECU (LH SEAT) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
y13-4 - Body ground | Fold switch (LH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
y13-3 - Body ground | Return switch (LH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
10. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (LH SEAT) - NO. 2 SEAT CUSHION FRAME SUB-ASSEMBLY LH) |
(a) Disconnect the y16 fold seat control ECU (LH seat) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
y16-4 (FLD+) - y13-4 | Always | Below 1 Ω |
y16-4 (FLD+) or y13-4 - Body ground | Always | 10 kΩ or higher |
y16-8 (FLD-) - y13-3 | Always | Below 1 Ω |
y16-8 (FLD-) or y13-3 - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (LH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
11. | INSPECT NO.2 SEATBACK FRAME SUB-ASSEMBLY LH (RECLINING MOTOR) |
(a) Remove the No. 2 seatback frame sub-assembly LH.
Click here
(b) Inspect the No. 2 seatback frame sub-assembly LH. (Reclining Motor)
Click here
NG | ![]() | REPLACE NO.2 SEATBACK FRAME SUB-ASSEMBLY LH |
|
12. | CHECK FOLD SEAT CONTROL ECU (LH SEAT) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
y14-3 - Body ground | Fold switch (LH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
y14-4 - Body ground | Return switch (LH) of fold seat switch assembly or No. 1 fold seat switch assembly pushed | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
13. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (LH SEAT) - NO. 2 SEATBACK FRAME SUB-ASSEMBLY LH) |
(a) Disconnect the y16 fold seat control ECU (LH seat) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
y16-3 (RCL+) - y14-3 | Always | Below 1 Ω |
y16-3 (RCL+) or y14-3 - Body ground | Always | 10 kΩ or higher |
y16-7 (RCL-) - y14-4 | Always | Below 1 Ω |
y16-7 (RCL-) or y14-4 - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (LH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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