| Last Modified: 11-27-2007 | 1.6 U | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000T5E00SX |
| Title: SEAT: FRONT POWER SEAT CONTROL SYSTEM: TERMINALS OF ECU (2008 LX570) | ||
TERMINALS OF ECU
1. CHECK POSITION CONTROL ECU AND SWITCH
(a) Disconnect the c14 and c15 switch connectors.
(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 |
|---|---|---|---|---|
|
c14-1 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
c14-5 (+B) - c14-1 (GND) |
L - W-B |
Power source |
Always |
11 to 14 V |
|
c15-4 (IG) - c14-1 (GND) |
G - W-B |
Engine switch signal |
Engine switch off |
Below 1 V |
|
Engine switch on (IG) |
11 to 14 V |
|||
|
c15-8 (SYSB) - c14-1 (GND) |
R - W-B |
System power source |
Always |
11 to 14 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the c14 and c15 switch connectors.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
c14-2 (SLD+) - c14-1 (GND) |
B - W-B |
Sliding motor signal (forward) |
Slide switch off |
Below 1 V |
|
Slide switch front on |
11 to 14 V |
|||
|
c14-3 (SLD-) - c14-1 (GND) |
P - W-B |
Sliding motor signal (rearward) |
Slide switch off |
Below 1 V |
|
Slide switch rear on |
11 to 14 V |
|||
|
c14-6 (FRV+) - c14-1 (GND) |
R - W-B |
Front vertical motor signal (upward) |
Front vertical switch off |
Below 1 V |
|
Front vertical switch up on |
11 to 14 V |
|||
|
c14-4 (FRV-) - c14-1 (GND) |
LG - W-B |
Front vertical motor signal (downward) |
Front vertical switch off |
Below 1 V |
|
Front vertical switch down on |
11 to 14 V |
|||
|
c14-7 (LFT+) - c14-1 (GND) |
G - W-B |
Lifter motor signal (upward) |
Lifter switch off |
Below 1 V |
|
Lifter switch up on |
11 to 14 V |
|||
|
c14-9 (LFT-) - c14-1 (GND) |
W - W-B |
Lifter motor signal (downward) |
Lifter switch off |
Below 1 V |
|
Lifter switch down on |
11 to 14 V |
|||
|
c14-8 (RCL+) - c14-1 (GND) |
GR - W-B |
Reclining motor signal (forward) |
Reclining switch off |
Below 1 V |
|
Reclining switch front on |
11 to 14 V |
|||
|
c14-10 (RCL-) - c14-1 (GND) |
Y - W-B |
Reclining motor signal (rearward) |
Reclining switch off |
Below 1 V |
|
Reclining switch rear on |
11 to 14 V |
If the result is not as specified, the position control ECU and switch may have a malfunction.
2. CHECK OUTER MIRROR CONTROL ECU
(a) Disconnect the I17 and I18 ECU connectors.
(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 |
|---|---|---|---|---|
|
I18-10 (MSWE) - I17-9 (GND) |
BR - W-B |
Ground for seat memory switch |
Always |
Below 1 Ω |
|
I17-9 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
I17-3 (B) - I17-9 (GND) |
R - W-B |
Battery (ECU power source) |
Always |
11 to 14 V |
|
I17-4 (ACC) - I17-9 (GND) |
GR - W-B |
Engine switch (ACC) power source supply |
Engine switch off |
Below 1 V |
|
Engine switch on (ACC) |
11 to 14 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the I17 and I18 ECU connectors.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I18-6 (M3) - I18-10 (MSWE) |
R - BR |
Seat memory switch 3 signal for seat memory switch |
Seat memory switch 3 on |
11 to 14 V |
|
Seat memory switch 3 off |
Below 1 V |
|||
|
I18-7 (M2) - I18-10 (MSWE) |
W - BR |
Seat memory switch 2 signal for seat memory switch |
Seat memory switch 2 on |
11 to 14 V |
|
Seat memory switch 2 off |
Below 1 V |
|||
|
I18-8 (M1) - I18-10 (MSWE) |
G - BR |
Seat memory switch 1 signal for seat memory switch |
Seat memory switch 1 on |
11 to 14 V |
|
Seat memory switch 1 off |
Below 1 V |
|||
|
I18-9 (MM) - I18-10 (MSWE) |
B - BR |
Seat memory SET switch signal for seat memory switch |
Seat memory SET switch on |
11 to 14 V |
|
Seat memory SET switch off |
Below 1 V |
If the result is not as specified, the outer mirror control ECU may have a malfunction.
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