DESCRIPTION
HINT:
The fold seat control ECU receives switch operation signals from the rear power seat switch and fold seat switch assembly operates the fold motor according to the received signal. While the fold motor is operating, its built-in Hall IC detects the position of the rear seatback and sends a fold motor position sensor signal to the fold seat control ECU. The fold seat control ECU uses the Hall IC to detect abnormalities, such as if the rear seatback is jammed.
WIRING DIAGRAM
PROCEDURE
1. | INSPECT REAR SEATBACK FRAME SUB-ASSEMBLY (FOLD MOTOR) |
(a) Remove the rear seatback frame sub-assembly.
(b) Inspect the rear seatback frame sub-assembly (fold motor).
NG | ![]() | REPLACE REAR SEATBACK FRAME SUB-ASSEMBLY |
|
2. | CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - FOLD MOTOR) |
(a) Disconnect the x3*1 or y3*2 and x4*1 or y4*2 fold seat control ECU (rear RH seat) connectors.
(b) Disconnect the x2*1 or y1*2 fold motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for Rear RH Seat
Tester Connection | Condition | Specified Condition |
---|---|---|
x3-11 (SV1) - x2-5 (HLV) | Always | Below 1 Ω |
x3-11 (SV1) or x2-5 (HLV) - Body ground | Always | 10 kΩ or higher |
x3-10 (SFLD) - x2-2 (HLS) | Always | Below 1 Ω |
x3-10 (SFLD) or x2-2 (HLS) - Body ground | Always | 10 kΩ or higher |
x3-8 (SG1) - x2-6 (HLG) | Always | Below 1 Ω |
x3-8 (SG1) or x2-6 (HLG) - Body ground | Always | 10 kΩ or higher |
x4-4 (FLD+) - x2-3 (FWD) | Always | Below 1 Ω |
x4-4 (FLD+) or x2-3 (FWD) - Body ground | Always | 10 kΩ or higher |
x4-8 (FLD-) - x2-4 (BACK) | Always | Below 1 Ω |
x4-8 (FLD-) or x2-4 (BACK) - Body ground | Always | 10 kΩ or higher |
for Rear LH Seat
Tester Connection | Condition | Specified Condition |
---|---|---|
y3-11 (SV1) - y1-5 (HLV) | Always | Below 1 Ω |
y3-11 (SV1) or y1-5 (HLV) - Body ground | Always | 10 kΩ or higher |
y3-10 (SFLD) - y1-2 (HLS) | Always | Below 1 Ω |
y3-10 (SFLD) or y1-2 (HLS) - Body ground | Always | 10 kΩ or higher |
y3-8 (SG1) - y1-6 (HLG) | Always | Below 1 Ω |
y3-8 (SG1) or y1-6 (HLG) - Body ground | Always | 10 kΩ or higher |
y4-4 (FLD+) - y1-3 (FWD) | Always | Below 1 Ω |
y4-4 (FLD+) or y1-3 (FWD) - Body ground | Always | 10 kΩ or higher |
y4-8 (FLD-) - y1-4 (BACK) | Always | Below 1 Ω |
y4-8 (FLD-) or y1-4 (BACK) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | CHECK REAR SEATBACK FRAME SUB-ASSEMBLY (POSITION SENSOR) |
(a) Temporarily replace the rear seatback frame sub-assembly with a new or known good one.
(b) Check the operation of the rear power seat.
Click here
OK | ![]() | END (REAR SEATBACK FRAME SUB-ASSEMBLY WAS DEFECTIVE) |
NG | ![]() | REPLACE FOLD SEAT CONTROL ECU |
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