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 the fold or return function.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When a fold seat control ECU (RH/LH seat) is replaced, it is necessary to perform initialization.
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 | |
---|---|---|
When fold seat switch assembly operated | Fold/Return functions of both rear No.2 power seats do not operate normally. | A |
Fold function of rear No. 2 power seat RH does not operate normally. | B | |
Return function of rear No. 2 power seat RH does not operate normally. | C | |
Fold function of rear No. 2 power seat LH does not operate normally. | D | |
Return function of rear No. 2 power seat LH does not operate normally. | E | |
When No. 1 fold seat switch assembly operated | Fold/Return functions of both rear No.2 power seats do not operate normally. | F |
Fold function of rear No. 2 power seat RH does not operate normally. | G | |
Return function of rear No. 2 power seat RH does not operate normally. | H | |
Fold function of rear No. 2 power seat LH does not operate normally. | I | |
Return function of rear No. 2 power seat LH does not operate normally. | J |
B | ![]() | GO TO STEP 4 |
C | ![]() | GO TO STEP 7 |
D | ![]() | GO TO STEP 10 |
E | ![]() | GO TO STEP 13 |
F | ![]() | GO TO STEP 16 |
G | ![]() | GO TO STEP 18 |
H | ![]() | GO TO STEP 21 |
I | ![]() | GO TO STEP 24 |
J | ![]() | GO TO STEP 27 |
|
2. | INSPECT FOLD SEAT SWITCH ASSEMBLY (GROUND) |
(a) Remove the fold seat switch assembly.
Click here
(b) Inspect the fold seat switch assembly. (Ground)
Click here
NG | ![]() | REPLACE FOLD SEAT SWITCH ASSEMBLY |
|
3. | CHECK HARNESS AND CONNECTOR (FOLD SEAT SWITCH ASSEMBLY - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
R54-7 (E) - Body ground | Always | Below 1 Ω |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
4. | INSPECT FOLD SEAT SWITCH ASSEMBLY (FOLD SWITCH (RH)) |
(a) Remove the fold seat switch assembly.
Click here
(b) Inspect the fold seat switch assembly. (Fold Switch (RH))
Click here
NG | ![]() | REPLACE FOLD SEAT SWITCH ASSEMBLY |
|
5. | 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 |
---|---|---|
R54-8 (FLDR) - Body ground | Always | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
6. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (RH SEAT) - FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the x15 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 |
---|---|---|
x15-26 (RCLF) - R54-8 (FLDR) | Always | Below 1 Ω |
x15-26 (RCLF) or R54-8 (FLDR) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (RH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
7. | INSPECT FOLD SEAT SWITCH ASSEMBLY (RETURN SWITCH (RH)) |
(a) Remove the fold seat switch assembly.
Click here
(b) Inspect the fold seat switch assembly. (Return Switch (RH))
Click here
NG | ![]() | REPLACE FOLD SEAT SWITCH ASSEMBLY |
|
8. | 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 |
---|---|---|
R54-3 (RTNR) - Body ground | Always | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
9. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (RH SEAT) - FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the x15 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 |
---|---|---|
x15-25 (RCLR) - R54-3 (RTNR) | Always | Below 1 Ω |
x15-25 (RCLR) or R54-3 (RTNR) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (RH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
10. | INSPECT FOLD SEAT SWITCH ASSEMBLY (FOLD SWITCH (LH)) |
(a) Remove the fold seat switch assembly.
Click here
(b) Inspect the fold seat switch assembly. (Fold Switch (LH))
Click here
NG | ![]() | REPLACE FOLD SEAT SWITCH ASSEMBLY |
|
11. | 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 |
---|---|---|
R54-6 (FLDL) - Body ground | Always | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
12. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (LH SEAT) - FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the y15 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 |
---|---|---|
y15-26 (RCLF) - R54-6 (FLDL) | Always | Below 1 Ω |
y15-26 (RCLF) or R54-6 (FLDL) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (LH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
13. | INSPECT FOLD SEAT SWITCH ASSEMBLY (RETURN SWITCH (LH)) |
(a) Remove the fold seat switch assembly.
Click here
(b) Inspect the fold seat switch assembly. (Return Switch (LH))
Click here
NG | ![]() | REPLACE FOLD SEAT SWITCH ASSEMBLY |
|
14. | 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 |
---|---|---|
R54-1 (RTNL) - Body ground | Always | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
15. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (LH SEAT) - FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the y15 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 |
---|---|---|
y15-25 (RCLR) - R54-1 (RTNL) | Always | Below 1 Ω |
y15-25 (RCLR) or R54-1 (RTNL) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (LH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
16. | INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY (GROUND) |
(a) Remove the No. 1 fold seat switch assembly.
Click here
(b) Inspect the No. 1 fold seat switch assembly. (Ground)
Click here
NG | ![]() | REPLACE NO. 1 FOLD SEAT SWITCH ASSEMBLY |
|
17. | CHECK HARNESS AND CONNECTOR (NO. 1 FOLD SEAT SWITCH ASSEMBLY - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
S88-7 (E) - Body ground | Always | Below 1 Ω |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
18. | INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY (FOLD SWITCH (RH)) |
(a) Remove the No. 1 fold seat switch assembly.
Click here
(b) Inspect the No. 1 fold seat switch assembly. (Fold Switch (RH))
Click here
NG | ![]() | REPLACE NO. 1 FOLD SEAT SWITCH ASSEMBLY |
|
19. | 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 |
---|---|---|
S88-6 (FOLD) - Body ground | Always | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
20. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (RH SEAT) - NO. 1 FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the x15 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 |
---|---|---|
x15-12 (FOLD) - S88-6 (FOLD) | Always | Below 1 Ω |
x15-12 (FOLD) or S88-6 (FOLD) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (RH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
21. | INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY (RETURN SWITCH (RH)) |
(a) Remove the No. 1 fold seat switch assembly.
Click here
(b) Inspect the No. 1 fold seat switch assembly. (Return Switch (RH))
Click here
NG | ![]() | REPLACE NO. 1 FOLD SEAT SWITCH ASSEMBLY |
|
22. | 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 |
---|---|---|
S88-1 (RTRN) - Body ground | Always | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
23. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (RH SEAT) - NO. 1 FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the x15 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 |
---|---|---|
x15-7 (RTRN) - S88-1 (RTRN) | Always | Below 1 Ω |
x15-7 (RTRN) or S88-1 (RTRN) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (RH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
24. | INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY (FOLD SWITCH (LH)) |
(a) Remove the No. 1 fold seat switch assembly.
Click here
(b) Inspect the No. 1 fold seat switch assembly. (Fold Switch (LH))
Click here
NG | ![]() | REPLACE NO. 1 FOLD SEAT SWITCH ASSEMBLY |
|
25. | 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 |
---|---|---|
S88-8 (FOLD) - Body ground | Engine switch off | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
26. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (LH SEAT) - NO. 1 FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the y15 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 |
---|---|---|
y15-12 (FOLD) - S88-8 (FOLD) | Always | Below 1 Ω |
y15-12 (FOLD) or S88-8 (FOLD) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE FOLD SEAT CONTROL ECU (LH SEAT) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
27. | INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY (RETURN SWITCH (LH)) |
(a) Remove the No. 1 fold seat switch assembly.
Click here
(b) Inspect the No. 1 fold seat switch assembly. (Return Switch (LH))
Click here
NG | ![]() | REPLACE NO. 1 FOLD SEAT SWITCH ASSEMBLY |
|
28. | 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 |
---|---|---|
S88-3 (RTRN) - Body ground | Always | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
29. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU (LH SEAT) - NO. 1 FOLD SEAT SWITCH ASSEMBLY) |
(a) Disconnect the y15 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 |
---|---|---|
y15-7 (RTRN) - S88-3 (RTRN) | Always | Below 1 Ω |
y15-7 (RTRN) or S88-3 (RTRN) - 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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