| Last Modified: 11-27-2007 | 1.6 U | |
| Service Category: Vehicle Interior | Section: Supplemental Restraint Systems | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000VVI00TX |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: TERMINALS OF ECU (2008 LX570) | ||
TERMINALS OF ECU
1. CHECK SEAT BELT CONTROL ECU
(a) Disconnect the E41 and E42 seat belt control 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 |
|---|---|---|---|---|
|
E42-8 (IG1) - Body ground |
G - Body ground |
Seat belt control ECU power source line |
Engine switch on (IG) |
11 to 14 V |
|
Engine switch off |
Below 1 V |
|||
|
E41-7 (+B) - Body ground |
R - W-B |
Seat belt control ECU power source line |
Always |
11 to 14 V |
|
E41-8 (PGND) - Body ground |
W-B - Body ground |
Seat belt control ECU ground line |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the E41 and E42 seat belt control 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 |
|---|---|---|---|---|
|
E41-2 (MOR+) - E41-8 (PGND) |
L - W-B |
Passenger side seat belt motor power source line |
Engine switch on (IG) |
4 to 8.5 V |
|
E41-3 (MOL+) - E41-8 (PGND) |
GR - W-B |
Driver side seat belt motor power source line |
Engine switch on (IG) |
4 to 8.5 V |
|
E41-1 (MOR-) - Body ground |
B - Body ground |
Passenger side seat belt motor ground line |
Engine switch on (IG) |
4 to 8.5 V |
|
E41-4 (MOL-) - Body ground |
W - Body ground |
Driver side seat belt motor ground line |
Engine switch on (IG) |
4 to 8.5 V |
If the result is not as specified, the seat belt control ECU may have a malfunction.
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