| Last Modified: 11-27-2007 | 1.6 U | |
| Service Category: Vehicle Exterior | Section: Window/Glass | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM0000027QN00EX |
| Title: WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: TERMINALS OF ECU (2008 LX570) | ||
TERMINALS OF ECU
1. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
(a) Disconnect the I12 motor connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I12-2 (B) - I12-1 (GND) |
L - W-B |
Battery power supply |
Always |
11 to 14 V |
|
I12-1 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the I12 motor connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I12-10 (UP) - I12-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), multiplex network master switch off → up |
11 to 14 V → Below 1 V |
|
I12-10 (UP) - I12-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
I12-7 (DOWN) - I12-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), multiplex network master switch off → down |
11 to 14 V → Below 1 V |
|
I12-7 (DOWN) - I12-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the motor may be malfunctioning.
2. CHECK FRONT POWER WINDOW REGULATOR MOTOR RH
(a) Disconnect the I4 motor connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I4-2 (B) - I4-1 (GND) |
L - W-B |
Battery power supply |
Always |
11 to 14 V |
|
I4-1 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the I4 motor connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I4-10 (UP) - I4-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), power window regulator switch off → up |
11 to 14 V → Below 1 V |
|
I4-10 (UP) - I4-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
I4-7 (DOWN) - I4-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), power window regulator switch off → down |
11 to 14 V → Below 1 V |
|
I4-7 (DOWN) - I4-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the motor may be malfunctioning.
3. CHECK REAR POWER WINDOW REGULATOR MOTOR LH
(a) Disconnect the J11 motor connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J11-2 (B) - J11-1 (GND) |
L - W-B |
Battery power supply |
Always |
11 to 14 V |
|
J11-1 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the J11 motor connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J11-10 (UP) - J11-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), power window regulator switch off → up |
11 to 14 V → Below 1 V |
|
J11-10 (UP) - J11-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
J11-7 (DOWN) - J11-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), power window regulator switch off → down |
11 to 14 V → Below 1 V |
|
J11-7 (DOWN) - J11-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the motor may be malfunctioning.
4. CHECK REAR POWER WINDOW REGULATOR MOTOR RH
(a) Disconnect the J4 motor connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J4-2 (B) - J4-1 (GND) |
L - W-B |
Battery power supply |
Always |
11 to 14 V |
|
J4-1 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the J4 motor connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J4-10 (UP) - J4-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), power window regulator switch off → up |
11 to 14 V → Below 1 V |
|
J4-10 (UP) - J4-1 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
J4-7 (DOWN) - J4-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), power window regulator switch off → down |
11 to 14 V → Below 1 V |
|
J4-7 (DOWN) - J4-1 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the motor may be malfunctioning.
5. CHECK MULTIPLEX NETWORK MASTER SWITCH
(a) Disconnect the I11 master switch connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I11-11 (B) - I11-12 (GND) |
L - W-B |
Battery power supply |
Always |
11 to 14 V |
|
I11-12 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the I11 master switch connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I11-20 (UP) - I11-12 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), multiplex network master switch off → up |
11 to 14 V → Below 1 V |
|
I11-20 (UP) - I11-12 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
I11-15 (DOWN) - I11-12 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), multiplex network master switch off → down |
11 to 14 V → Below 1 V |
|
I11-15 (DOWN) - I11-12 (GND) |
B - W-B |
Power window down operation |
Engine switch ON (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the master switch may be malfunctioning.
6. CHECK POWER WINDOW REGULATOR SWITCH
(a) Disconnect the I3 switch connector.
(b) Measure the resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I3-5 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the I3 switch connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
I3-2 (UP) - I3-5 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), power window regulator switch off → up |
11 to 14 V → Below 1 V |
|
I3-10 (DOWN) - I3-5 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), power window regulator switch off → down |
11 to 14 V → Below 1 V |
|
I3-4 (AUTO) - I3-5 (GND) |
R - W-B |
Power window up operation |
Engine switch on (IG), and door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
I3-4 (AUTO) - I3-5 (GND) |
R - W-B |
Power window down operation |
Engine switch on (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the switch may be malfunctioning.
7. CHECK REAR POWER WINDOW REGULATOR SWITCH LH
(a) Disconnect the J10 switch connector.
(b) Measure the resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J10-5 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the J10 switch connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J10-2 (UP) - J10-5 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), power window regulator switch off → up |
11 to 14 V → Below 1 V |
|
J10-10 (DOWN) - J10-5 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), power window regulator switch off → down |
11 to 14 V → Below 1 V |
|
J10-4 (AUTO) - J10-5 (GND) |
R - W-B |
Power window up operation |
Engine switch on (IG), door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
J10-4 (AUTO) - J10-5 (GND) |
R - W-B |
Power window down operation |
Engine switch on (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the switch may be malfunctioning.
8. CHECK REAR POWER WINDOW REGULATOR SWITCH RH
(a) Disconnect the J3 switch connector.
(b) Measure the resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J3-5 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the J3 switch connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
J3-2 (UP) - J3-5 (GND) |
L - W-B |
Power window up operation |
Engine switch on (IG), power window regulator switch off → up |
11 to 14 V → Below 1 V |
|
J3-10 (DOWN) - J3-5 (GND) |
B - W-B |
Power window down operation |
Engine switch on (IG), power window regulator switch off → down |
11 to 14 V → Below 1 V |
|
J3-4 (AUTO) - J3-5 (GND) |
R - W-B |
Power window up operation |
Engine switch on (IG), door glass fully open → power window auto up operation → door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
J3-4 (AUTO) - J3-5 (GND) |
R - W-B |
Power window down operation |
Engine switch on (IG), door glass fully closed → power window auto down operation → door glass fully open |
11 to 14 V → Below 1 V → 11 to 14 V |
If the result is not as specified, the switch may be malfunctioning.
9. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
(a) Disconnect the 2A, 2C, E1, E2 and E3 ECU connectors.
(b) Measure the resistance and voltage according to value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
E3-1 (GND3) - 2D-62 (GND2) |
BR - W-B |
Ground |
Always |
Below 1 Ω |
|
2D-62 (GND2) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
2A-1 (IG) - Body ground |
B - Body ground |
IG power supply |
Always |
11 to 14 V |
|
E2-1 (AM2) - Body ground |
W - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
E1-6 (AM1) - Body ground |
W - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
E1-24 (DCTY) - Body ground |
L - Body ground |
Driver side door courtesy light switch input |
Driver side door open |
Below 1 Ω |
|
Driver side door closed |
10 kΩ or higher |
|||
|
E2-21 (PCTY) - Body ground |
Y - Body ground |
Front passenger side door courtesy light switch input |
Front passenger side door open |
Below 1 Ω |
|
Front passenger side door closed |
10 kΩ or higher |
|||
|
E2-7 (RCTY) - Body ground |
G - Body ground |
Rear RH side door courtesy light switch input |
Rear RH side door open |
Below 1 Ω |
|
Rear RH side door closed |
10 kΩ or higher |
|||
|
2C-2 (LCTY) - Body ground |
W - Body ground |
Rear LH side door courtesy light switch input |
Rear LH side door open |
Below 1 Ω |
|
Rear LH side door closed |
10 kΩ or higher |
If the result is not as specified, the wire harness side may have a malfunction.
|
|