Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| G128-1 (+B) - G128-20 (E) | BR - W-B | Power source (+B) | Always | 11 to 14 V |
| G128-3 (SIG-) - G128-20 (E) | B - W-B | Ground | Always | Below 1 V |
| G128-4 (IND1) - G128-20 (E) | LG - W-B | Manual (SOS) switch red indicator illumination signal | For 2 seconds after turning the engine switch on (IG) | 1 to 8.5 V |
| Engine switch off | Below 1 V | |||
| G128-5 (MCVD) - G128-20 (E) | B - W-B | Telephone microphone assembly power supply | Engine switch on (ACC) | 4 to 6 V |
| Engine switch off | Below 1 V | |||
| G128-6 (MCI+) - G128-20 (E) | W - W-B | Receive microphone voice signal | Voice being input to telephone microphone assembly | A waveform synchronized with microphone voice signal is input |
| G128-7 (MCI-) - G128-20 (E) | R - W-B | Receive microphone voice signal | Always | Below 1 V |
| G128-13 (GSW) - G128-20 (E) | Y - W-B | Collision detection signal | Engine switch on (IG) | Pulse generation (Refer to waveform1) |
| G128-19 (IG2) - G128-20 (E) | P - W-B | Power source (IG) | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| G128-20 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| G128-21 (SIG1) - G128-3 (SIG-) | R - G | Manual (SOS) switch button condition signal | Manual (SOS) switch not pressed | 1.3 to 1.9 V |
| Manual (SOS) switch pressed | 0.5 to 0.8 V | |||
| G128-22 (IND2) - G128-20 (E) | G - W-B | Manual (SOS) switch green indicator illumination signal | For 2 seconds after turning the engine switch on (IG) | 1 to 8.5 V |
| Engine switch off | Below 1 V | |||
| G128-23 (SGND) - G128-20 (E) | Shielded - W-B | Shield ground | Always | Below 1 Ω |
| G128-25 (CANP) | R | CAN communication signal | - | - |
| G128-26 (CANN) | W | CAN communication signal | - | - |
CHECK DCM (TELEMATICS TRANSCEIVER)
(a) Oscilloscope waveform:
(1) Waveform 1
| Item | Condition |
|---|---|
| Tester connection | G128-13 (GSW) - G128-20 (E) |
| Tool setting | 5.0 V/DIV., 20 ms/DIV. |
| Vehicle condition | Engine switch on (IG) |
CHECK RADIO RECEIVER ASSEMBLY
w/o Navigation System: Click here .gif)
w/ Navigation System: Click here
READ NEXT:
Unable To Connect To Call Center
DESCRIPTION This may occur when the intensity of telephone radio frequency was very weak, or the safety connect system has a malfunction and a DTC is set. PROCEDURE 1. CHECK COMMUNICATION SERVIC
Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY NOTICE:
SEE MORE:
Parts Location
PARTS LOCATION ILLUSTRATION *A w/o AVS - - *1 FRONT AXLE HUB SUB-ASSEMBLY RH - FRONT SPEED SENSOR ROTOR RH *2 FRONT SPEED SENSOR RH *3 FRONT AXLE HUB SUB-ASSEMBLY LH - FRONT SPEED SENSOR ROTOR LH *4 FRONT SPEED SENSOR LH *5 REAR AXLE HUB AND BEARING ASSEMBLY RH -
Throttle Actuator "A" Control Motor Circuit Current Below Threshold (P210018,P210019)
DESCRIPTION The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears. The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body with motor assembly. The throttle position sensor provides feedback
