Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
CHECK VEHICLE APPROACHING SPEAKER CONTROLLER
(a) Disconnect the G42 vehicle approaching speaker controller connector.
(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 |
|---|---|---|---|---|
| G42-1 (IG) - Body ground | LA-B - Body ground | IG power supply | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| G42-6 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Connect the G42 vehicle approaching speaker controller connector.
(d) Measure the check for pulses according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| G42-7 (SP+) - G42-8 (SP-) | B - W | Vehicle approaching speaker output | Vehicle approaching speaker operating | A waveform synchronized with the sound is output. (See Waveform 1) |
| G42-3 (CANH) - G42-6 (GND) | B - W-B | CAN communication line | Power switch on (IG) | Pulse generation |
| G42-4 (CANL) - G42-6 (GND) | W - W-B | CAN communication line | Power switch on (IG) | Pulse generation |
(1) Waveform 1
| Item | Condition |
|---|---|
| Tester Connection | G42-7 (SP+) - G42-8 (SP-) |
| Tool Setting | 1 V/DIV., 500 ms./DIV. |
| Condition | Vehicle approaching speaker operating |
