| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Supplemental Restraint Systems | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000VVO00XX |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Power Source Circuit |
DESCRIPTION
This circuit supplies power to the seat belt control ECU when the engine switch is on (IG).
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Start the engine before inspection. Check the IG1 NO. 1 relay or battery if the starting system does not start.
PROCEDURE
|
1. |
INSPECT FUSE (ECU-IG No. 1, PSB) |
(a) Remove the ECU-IG No. 1 and PSB fuses from the cowl side junction block LH.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
ECU-IG No. 1 fuse |
Always |
Below 1 Ω |
|
PSB fuse |
|
|
2. |
CHECK HARNESS AND CONNECTOR (SEAT BELT CONTROL ECU - BATTERY AND BODY GROUND) |
|
(a) Disconnect the E41 and E42 seat belt control ECU connectors. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E42-8 (IG1) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
Engine switch off |
Below 1 V |
|
|
E41-7 (+B) - Body ground |
Always |
11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E41-8 (PGND) - Body ground |
Always |
Below 1 Ω |
|
|
|