Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
CHECK 4WD ECU ASSEMBLY
(a) Measure the voltage and resistance of the connector.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| G131-6 (CANH) - G131-5 (CANL) | G - W | HIGH-level CAN bus wire - LOW-level CAN bus wire | Cable disconnected from negative (-) battery terminal | 54 to 69 Ω |
| G131-4 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| G131-3 (IG1) - G131-4 (GND) | BE - W-B | Power source voltage | Engine switch on (IG) | 11 to 14 V |
| G131-2 (SLC+) - G131-1 (SLC-) | W - B | 4WD linear solenoid signal | D position, engine idling | Pulse generation (See waveform 1) |
If the result is not as specified, the 4WD ECU assembly may have a malfunction.
(b) Using an oscilloscope, check the waveform 1.
Waveform 1 (Reference)| Item | Content |
|---|---|
| Terminal No. (Symbol) | G131-2 (SLC+) - G131-1 (SLC-) |
| Tester Range | 2 V/DIV., 1 msec./DIV. |
| Condition | D position, engine idling |
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Components
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BSM (Blind Spot Monitor)
The Blind Spot Monitor is a system
that uses rear side radar sensors
installed on the inner side of the
rear bumper on the left and right
side to assist the driver in confirming
safety when changing lanes.
WARNING
■Cautions regarding the use of the
function
The driver is solely responsibl
Installation
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