DESCRIPTION
Based on the engine switch signal, each fold seat control ECU determines the driving condition of the vehicle and enables or disables the fold and return functions.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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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 |
---|---|
Fold/Return functions of both rear No.2 power seats do not operate normally. | A |
Fold/Return functions of rear No. 2 power seat RH do not operate normally. | B |
Fold/Return functions of rear No. 2 power seat LH do not operate normally. | C |
B | ![]() | GO TO STEP 4 |
C | ![]() | GO TO STEP 6 |
|
2. | CHECK HARNESS AND CONNECTOR (IG POWER SOURCE) |
(a) Disconnect the x15 fold seat control ECU (RH Seat) connector. |
|
(b) Disconnect the y15 fold seat control ECU (LH seat) connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
x15-3 (IG) - Body ground | Engine switch off | Below 1 V |
Engine switch on (IG) | 11 to 14 V | |
y15-3 (IG) - Body ground | Engine switch off | Below 1 V |
Engine switch on (IG) | 11 to 14 V |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
3. | CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FOLD SEAT CONTROL ECU (RH/LH SEAT)) |
(a) Disconnect the 2B and 2D instrument panel junction block assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
2B-30 or x15-3 (IG) - Body ground | Always | 10 kΩ or higher |
2D-35 or y15-3 (IG) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
4. | INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Measure the voltage according to the value(s) in the table below.
*a | Component with harness connected (Instrument Panel Junction Block Assembly) | - | - |
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
2B-30 - Body ground | Engine switch off | Below 1 V |
Engine switch on (IG) | 11 to 14 V |
NG | ![]() | REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
5. | CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FOLD SEAT CONTROL ECU (RH SEAT)) |
(a) Disconnect the x15 fold seat control ECU (RH seat) connector.
(b) Disconnect the 2B instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
2B-30 - x15-3 (IG) | Always | Below 1 Ω |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
6. | INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Measure the voltage according to the value(s) in the table below.
*a | Component with harness connected (Instrument Panel Junction Block Assembly) | - | - |
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
2D-35 - Body ground | Engine switch off | Below 1 V |
Engine switch on (IG) | 11 to 14 V |
NG | ![]() | REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
7. | CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FOLD SEAT CONTROL ECU (LH SEAT)) |
(a) Disconnect the y15 fold seat control ECU (LH seat) connector.
(b) Disconnect the 2D instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
2D-35 - y15-3 (IG) | Always | Below 1 Ω |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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