| Last Modified: 11-27-2007 | 1.6 U | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000003FZH000X |
| Title: SEAT: REAR POWER SEAT CONTROL SYSTEM (for Rear No. 2 Seat with Manual Folding-up Function): TERMINALS OF ECU (2008 LX570) | ||
TERMINALS OF ECU
1. CHECK FOLD SEAT CONTROL ECU LH
(a) Disconnect the i13 ECU connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
i13-6 (+B) - i13-8 (GND) |
R - W-B |
Power source |
Always |
11 to 14 V |
|
i13-8 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
i13-7 (ECUB) - i13-8 (GND) |
R - W-B |
Power source |
Always |
11 to 14 V |
|
i13-3 (IG) - i13-8 (GND) |
G - W-B |
Engine switch signal |
Engine switch on (IG) |
11 to 14 V |
|
Engine 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 i13 ECU connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
i13-1 (FACT) - i13-8 (GND) |
B - W-B |
Floor release motor LH operation signal |
Floor release motor LH operating |
9 to 14 V |
|
i13-2 (RACT) - i13-8 (GND) |
L - W-B |
No. 1 back release motor LH operation signal |
No. 1 back release motor LH operating |
9 to 14 V |
|
No. 2 back release motor LH operation signal |
No. 2 back release motor LH operating |
|||
|
i13-9 (BDCY) - i13-8 (GND) |
W - W-B |
Back door courtesy switch signal |
Back door open |
Below 1 V |
|
Back door closed |
9 to 14 V |
|||
|
i13-12 (TBL) - i13-8 (GND) |
Y - W-B |
Fold seat switch LH signal (Table switch) |
Back door open Fold seat switch LH (Table switch) off |
9 to 14 V |
|
Back door open Fold seat switch LH (Table switch) on |
Below 1 V |
|||
|
i13-11 (FOLD) - i13-8 (GND) |
G - W-B |
Fold seat switch LH signal (Fold switch) |
Back door open Fold seat switch LH (Fold switch) off |
9 to 14 V |
|
Back door open Fold seat switch LH (Fold switch) on |
Below 1 V |
|||
|
i13-10 (P) - i13-8 (GND) |
G - W-B |
Park/neutral position switch signal |
Engine switch on (IG) Park/neutral position switch in P position |
9 to 14 V |
|
Engine switch on (IG) Park/neutral position switch not in P position |
Below 1 V |
|||
|
i13-5 (LCKB) - i13-8 (GND) |
L - W-B |
No. 1 seatback lock switch LH signal |
No. 1 seatback lock switch LH off |
9 to 14 V |
|
No. 1 seatback lock switch LH on |
Below 1 V |
|||
|
No. 2 seatback lock switch LH signal |
No. 2 seatback lock switch LH off |
9 to 14 V |
||
|
No. 2 seatback lock switch LH on |
Below 1 V |
|||
|
i13-4 (ERAB) - i13-8 (GND) |
BR - W-B |
Seatback area switch LH signal |
Seatback area switch LH off |
9 to 14 V |
|
Seatback area switch LH on |
Below 1 V |
If the result is not as specified, the fold seat control ECU may have a malfunction.
2. CHECK FOLD SEAT CONTROL ECU RH
(a) Disconnect the i5 ECU connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
i5-6 (+B) - i5-8 (GND) |
L - W-B |
Power source |
Always |
11 to 14 V |
|
i5-8 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
i5-7 (ECUB) - i5-8 (GND) |
R - W-B |
Power source |
Always |
11 to 14 V |
|
i5-3 (IG) - i5-8 (GND) |
G - W-B |
Engine switch signal |
Engine switch on (IG) |
11 to 14 V |
|
Engine 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 i5 ECU connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
i5-1 (FACT) - i5-8 (GND) |
B - W-B |
Floor release motor RH operation signal |
Floor release motor RH operating |
9 to 14 V |
|
i5-2 (RACT) - i5-8 (GND) |
L - W-B |
No. 1 back release motor RH operation signal |
No. 1 back release motor RH operating |
9 to 14 V |
|
No. 2 back release motor RH operation signal |
No. 2 back release motor RH operating |
|||
|
i5-9 (BDCY) - i5-8 (GND) |
W - W-B |
Back door courtesy switch signal |
Back door open |
Below 1 V |
|
Back door closed |
9 to 14 V |
|||
|
i5-12 (TBL) - i5-8 (GND) |
Y - W-B |
Fold seat switch RH signal (Table switch) |
Back door open Fold seat switch RH (Table switch) off |
9 to 14 V |
|
Back door open Fold seat switch RH (Table switch) on |
Below 1 V |
|||
|
i5-11 (FOLD) - i5-8 (GND) |
G - W-B |
Fold seat switch RH signal (Fold switch) |
Back door open Fold seat switch RH (Fold switch) off |
9 to 14 V |
|
Back door open Fold seat switch RH (Fold switch) on |
Below 1 V |
|||
|
i5-10 (P) - i5-8 (GND) |
G - W-B |
Park/neutral position switch signal |
Engine switch on (IG) Park/neutral position switch in P position |
9 to 14 V |
|
Engine switch on (IG) Park/neutral position switch not in P position |
Below 1 V |
|||
|
i5-5 (LCKB) - i5-8 (GND) |
L - W-B |
No. 1 seatback lock switch RH signal |
No. 1 seatback lock switch RH off |
9 to 14 V |
|
No. 1 seatback lock switch RH on |
Below 1 V |
|||
|
No. 2 seatback lock switch RH signal |
No. 2 seatback lock switch RH off |
9 to 14 V |
||
|
No. 2 seatback lock switch RH on |
Below 1 V |
|||
|
i5-4 (ERAB) - i5-8 (GND) |
BR - W-B |
Seatback area switch RH signal |
Seatback area switch RH off |
9 to 14 V |
|
Seatback area switch RH on |
Below 1 V |
If the result is not as specified, the fold seat control ECU may have a malfunction.
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