- When the system detects that an object is caught.
- When the seat operation conditions are not met.
| Last Modified: 11-29-2007 | 1.6 U | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001YWJ005X |
| Title: SEAT: REAR POWER SEAT CONTROL SYSTEM: TERMINALS OF ECU (2008 Sequoia) | ||
TERMINALS OF ECU
1. CHECK FOLD SEAT CONTROL ECU LH
(a) Disconnect the O33 and O34 ECU connectors.
(b) Measure the voltage and resistance of the wire harness side connectors.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
O33-4 (+B) - O33-8 (GND) |
P - W-B |
Power source (Battery) |
Always |
11 to 14 V |
|
O33-8 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
O33-9 (GND2) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
O33-10 (+B2) - O33-9 (GND2) |
V - W-B |
Power source (Battery) |
Always |
11 to 14 V |
|
O34-3 (IG) - O33-8 (GND) |
R - W-B |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
|
Ignition switch off |
Below 1 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the O33 and O34 ECU connectors.
(d) Measure the voltage and resistance of the connectors.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
O33-1 (FLD+) - O33-8 (GND) |
B - W-B |
No. 2 reclining motor operation signal |
Ignition switch ON Rear power seat switch LH forward |
11 to 14 V |
|
O33-2 (RCL+) - O33-8 (GND) |
SB - W-B |
No. 1 reclining motor operation signal |
Ignition switch ON Rear power seat switch LH forward |
11 to 14 V |
|
O33-5 (FLD-) - O33-8 (GND) |
W - W-B |
No. 2 reclining motor operation signal |
Ignition switch ON Rear power seat switch LH backward |
11 to 14 V |
|
O33-6 (RCL-) - O33-8 (GND) |
R - W-B |
No. 1 reclining motor operation signal |
Ignition switch ON Rear power seat switch LH backward |
11 to 14 V |
|
O34-4 (R CL) - O33-8 (GND) |
G - W-B |
Rear door courtesy switch signal |
Rear door courtesy switch LH OFF |
11 to 14 V |
|
Rear door courtesy switch LH ON |
Below 1 V |
|||
|
O34-5 (BDCY) - O33-8 (GND) |
V - W-B |
Back door courtesy switch signal |
Back door courtesy switch OFF |
11 to 14 V |
|
Back door courtesy switch ON |
Below 1 V |
|||
|
O34-10 (FLD2) - O33-8 (GND) |
O - W-B |
No. 2 fold switch signal (Folding) |
Rear LH door open No. 2 fold seat switch LH OFF |
11 to 14 V |
|
Rear LH door open No. 2 fold seat switch LH folding |
Below 1 V |
|||
|
O34-12 (RCLF) - O33-8 (GND) |
LG - W-B |
Reclining forward switch signal |
Always |
11 to 14 V |
|
Rear power seat switch LH forward |
Below 1 V |
|||
|
O34-13 (RCLR) - O33-8 (GND) |
SB - W-B |
Reclining backward switch signal |
Always |
11 to 14 V |
|
Rear power seat switch LH backward |
Below 1 V |
|||
|
O34-14 (RTN2) - O33-8 (GND) |
BR - W-B |
No. 2 return switch signal (Return) |
Rear LH door open No. 2 fold seat switch LH OFF |
11 to 14 V |
|
Rear LH door open No. 2 fold seat switch LH return |
Below 1 V |
|||
|
O34-15 (RTRN) - O33-8 (GND) |
B - W-B |
No. 1 return switch signal (Return) |
Back door open No. 1 fold seat switch LH OFF |
11 to 14 V |
|
Back door open No. 1 fold seat switch LH return |
Below 1 V |
|||
|
O34-16 (FOLD) - O33-8 (GND) |
P - W-B |
No. 1 fold switch signal (Folding) |
Back door open No. 1 fold seat switch LH OFF |
11 to 14 V |
|
Back door open No. 1 fold seat switch LH folding |
Below 1 V |
|||
|
O34-22 (SRCL) - O34-36 (SG2) |
G - V |
Reclining position sensor signal |
Motor is operating |
Below 1 V ←→ 11 to 14 V Pulse generation |
|
O34-25 (SV2) - O34-36 (SG2) |
L - V |
Position sensor power supply |
Back door open |
11 to 14 V |
|
O34-31 (IND3) - O33-8 (GND) |
W - W-B |
No. 2 fold seat switch indicator signal |
Rear LH door open No. 2 fold seat switch LH ON: |
Below 1 V ←→ 11 to 14 V Pulse generation |
|
When the indicator is illuminated |
9 to 13 V |
|||
|
O34-32 (P) - O33-8 (GND) |
GR - W-B |
Park/Neutral position switch signal |
Ignition switch ON Park/Neutral position switch P position |
11 to 14 V |
|
Ignition switch ON Park/Neutral position switch not in P position |
Below 1 V |
|||
|
O34-35 (IND1) - O33-8 (GND) |
Y - W-B |
No. 1 fold seat switch indicator signal |
Back door open No. 1 fold seat switch LH ON:
|
Below 1 V ←→ 11 to 14 V Pulse generation |
|
When the indicator is illuminated |
9 to 13 V |
|||
|
O34-36 (SG2) - Body ground |
V - Body ground |
Position sensor ground |
Always |
Below 1 Ω |
If the result is not as specified, the ECU may have a malfunction.
2. CHECK FOLD SEAT CONTROL ECU RH
(a) Disconnect the P19 and P20 ECU connectors.
(b) Measure the voltage and resistance of the wire harness side connectors.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
P19-4 (+B) - P19-8 (GND) |
LG - W-B |
Power source (Battery) |
Always |
11 to 14 V |
|
P19-8 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
P19-9 (GND2) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
P19-10 (+B2) - P19-9 (GND2) |
B - W-B |
Power source (Battery) |
Always |
11 to 14 V |
|
P20-3 (IG) - P19-8 (GND) |
P - W-B |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
|
Ignition switch off |
Below 1 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the P19 and P20 ECU connectors.
(d) Measure the voltage and resistance of the connectors.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
P19-1 (FLD+) - P19-8 (GND) |
G - W-B |
No. 2 reclining motor operation signal |
Ignition switch ON Rear power seat switch RH forward |
11 to 14 V |
|
P19-2 (RCL+) - P19-8 (GND) |
O - W-B |
No. 1 reclining motor operation signal |
Ignition switch ON Rear power seat switch RH forward |
11 to 14 V |
|
P19-5 (FLD-) - P19-8 (GND) |
R - W-B |
No. 2 reclining motor operation signal |
Ignition switch ON Rear power seat switch RH backward |
11 to 14 V |
|
P19-6 (RCL-) - P19-8 (GND) |
W - W-B |
No. 1 reclining motor operation signal |
Ignition switch ON Rear power seat switch RH backward |
11 to 14 V |
|
P20-4 (R CL) - P19-8 (GND) |
G - W-B |
Rear door courtesy switch signal |
Rear door courtesy switch RH OFF |
11 to 14 V |
|
Rear door courtesy switch RH ON |
Below 1 V |
|||
|
P20-5 (BDCY) - P19-8 (GND) |
G - W-B |
Back door courtesy switch signal |
Back door courtesy switch OFF |
11 to 14 V |
|
Back door courtesy switch ON |
Below 1 V |
|||
|
P20-10 (FLD2) - P19-8 (GND) |
O - W-B |
No. 2 fold switch signal (Folding) |
Rear RH door open No. 2 fold seat switch RH OFF |
11 to 14 V |
|
Rear RH door open No. 2 fold seat switch RH folding |
Below 1 V |
|||
|
P20-12 (RCLF) - P19-8 (GND) |
LG - W-B |
Reclining forward switch signal |
Always |
11 to 14 V |
|
Rear power seat switch RH forward |
Below 1 V |
|||
|
P20-13 (RCLR) - P19-8 (GND) |
SB - W-B |
Reclining backward switch signal |
Always |
11 to 14 V |
|
Rear power seat switch RH backward |
Below 1 V |
|||
|
P20-14 (RTN2) - P19-8 (GND) |
SB - W-B |
No. 2 return switch signal (Return) |
Rear RH door Open No. 2 fold seat switch RH OFF |
11 to 14 V |
|
Rear RH door Open No. 2 fold seat switch RH return |
Below 1 V |
|||
|
P20-15 (RTRN) - P19-8 (GND) |
B - W-B |
No. 1 return switch signal (Return) |
Back door open No. 1 fold seat switch RH OFF |
11 to 14 V |
|
Back door open No. 1 fold seat switch RH return |
Below 1 V |
|||
|
P20-16 (FOLD) - P19-8 (GND) |
P - W-B |
No. 1 fold switch signal (Folding) |
Back door open No. 1 fold seat switch RH OFF |
11 to 14 V |
|
Back door open No. 1 fold seat switch RH folding |
Below 1 V |
|||
|
P20-22 (SRCL) - P20-36 (SG2) |
G - V |
Reclining position sensor signal |
Motor is operating |
Below 1 V ←→ 11 to 14 V Pulse generation |
|
P20-25 (SV2) - P20-36 (SG2) |
L - V |
Position sensor power supply |
Back door open |
11 to 14 V |
|
P20-31 (IND3) - P19-8 (GND) |
W - W-B |
No. 2 fold seat switch indicator signal |
Rear RH door open No. 2 fold seat switch RH ON:
|
Below 1 V ←→ 11 to 14 V Pulse generation |
|
When the indicator is illuminated |
9 to 13 V |
|||
|
P20-32 (P) - P19-8 (GND) |
GR - W-B |
Park/Neutral position switch signal |
Ignition switch ON Park/Neutral position switch P position |
11 to 14 V |
|
Ignition switch ON Park/Neutral position switch not in P position |
Below 1 V |
|||
|
P20-35 (IND1) - P19-8 (GND) |
L - W-B |
No. 1 fold seat switch indicator signal |
Back door open No. 1 fold seat switch RH ON:
|
Below 1 V ←→ 11 to 14 V Pulse generation |
|
When the indicator is illuminated |
9 to 13 V |
|||
|
P20-36 (SG2) - Body ground |
V - Body ground |
Position sensor ground |
Always |
Below 1 Ω |
If the result is not as specified, the ECU may have a malfunction.
|
|