Lexus ES: System Description
SYSTEM DESCRIPTION
GENERAL
(a) This system has a rear television camera assembly mounted on the luggage compartment door to display an image of the area behind the vehicle on the multi-display. The multi-display also shows a composite view consisting of the area behind the vehicle and parking guide lines to assist the driver in parking the vehicle by monitoring the area behind the vehicle.
(b) This system consists of the following components:
(1) Rear television camera assembly
(2) Multi-display assembly
(3) Steering sensor
(4) Hybrid vehicle control ECU
(5) Main body ECU (multiplex network body ECU)
(6) Blind spot monitor sensor*1
(7) Clearance warning ECU assembly*2
(8) BKUP LP relay*3
- *1: w/ Blind Spot Monitor System
- *2: w/ Parking Support Alert System
- *3: for 8 inch display
(c) This system is equipped with a self-diagnosis system, which is operated on a designated window that appears on the multi-display.
FUNCTION OF COMPONENTS
(a) The rear television camera assembly controls the system by using information from the following components.
| Item | Function |
|---|---|
| Rear Television Camera Assembly |
|
| Multi-display Assembly |
|
| Steering Sensor | Detects the angle of the steering wheel and transmits the resulting signals to the rear television camera assembly via CAN communication. |
| Hybrid Vehicle Control ECU | Transmits the vehicle information signal to the rear television camera assembly via CAN communication. |
| Main Body ECU (Multiplex Network Body ECU) | Transmits the luggage compartment door courtesy switch signal and vehicle information signal to the rear television camera assembly via CAN communication. |
| Blind Spot Monitor Sensor*1 | Transmits the RCTA information signal to the rear television camera assembly via CAN communication. |
| Clearance Warning ECU Assembly*2 |
|
| BKUP LP Relay*3 | Transmits the reverse signal to the multi-display assembly. |
- *1: w/ Blind Spot Monitor System
- *2: w/ Parking Support Alert System
- *3: w/o Parking Support Alert System
- *4: for 12.3 inch display
OPERATION EXPLANATION
(a) Operation description of the park assist monitor system
(1) The multi-display assembly receives the reverse signal when the power switch is on (IG) and the shift lever is moved to R. After receiving the reverse signal, the multi-display switches to the parking assist monitor system.
DISPLAY MODE
(a) Rear view screen
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| *a | Guide Line Display Mode Switching Button | *b | Estimated Course Line Display Mode |
| *c | Parking Assist Guide Line Display Mode | *d | Distance Guide Line Display Mode |
| *e | Display Mode Switching Button | *f | Guide Line Display Mode Switching Button Pressed |
HINT:
The screen changes to the wide rear view screen when the display mode switching button is selected.
(1) While the parking assist monitor is displayed on the multi-display, pressing the guide line display mode switching button switches the parking assist monitor display mode.
Parking Assist Monitor Display Mode| Parking Assist Monitor Display Mode | Distance Guide Lines (Red) | Estimated Course Lines (Yellow) | Distance Guide Line (Yellow) | Vehicle Width Extension Guide Line (Blue) | Distance Guide Line (Blue) | Parking Assist Guide Lines (Blue) | Vehicle Center Line (Blue) |
|---|---|---|---|---|---|---|---|
| Estimated course line display mode | Displayed | Displayed | Displayed | Displayed | Displayed | Not displayed | Displayed |
| Parking assist guide line display mode | Displayed | Not displayed | Not displayed | Displayed | Not displayed | Displayed | Displayed |
| Distance guide line display mode | Displayed | Not displayed | Not displayed | Not displayed | Not displayed | Not displayed | Not displayed |
(b) Wide rear view screen
.png)
| *a | Guide Line Display Mode Switching Button | *b | Estimated Course Line Display Mode |
| *c | Parking Assist Guide Line Display Mode | *d | Distance Guide Line Display Mode |
| *e | Display Mode Switching Button | *f | Guide Line Display Mode Switching Button Pressed |
HINT:
The screen changes to the rear view screen when the display mode switching button is selected.
(1) While the parking assist monitor is displayed on the multi-display, pressing the guide line display mode switching button switches the parking assist monitor display mode.
Parking Assist Monitor Display Mode| Parking Assist Monitor Display Mode | Distance Guide Lines (Red) | Estimated Course Lines (Yellow) | Distance Guide Line (Yellow) | Vehicle Width Extension Guide Line (Blue) | Distance Guide Line (Blue) | Parking Assist Guide Lines (Blue) | Vehicle Center Line (Blue) |
|---|---|---|---|---|---|---|---|
| Estimated course line display mode | Displayed | Displayed | Displayed | Displayed | Displayed | Not displayed | Displayed |
| Parking assist guide line display mode | Displayed | Not displayed | Not displayed | Displayed | Not displayed | Displayed | Displayed |
| Distance guide line display mode | Displayed | Not displayed | Not displayed | Not displayed | Not displayed | Not displayed | Not displayed |
DIAGNOSTIC FUNCTION OUTLINE
(a) This parking assist monitor system has a diagnostic function displayed on the multi-display. This function enables calibration (adjustment and verification) of the parking assist monitor system.
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(b) The following items for the parking assist monitor system can be checked using the Techstream.
| Item | Proceed to |
|---|---|
| DTC | |
| Data List / Active Test | |
READ NEXT:
System Diagram
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Radio Receiver Assembly Multi-display Assembly Camera information signal GVIF Radio Receiver Assembly Rear Tel
Terminals Of Ecu
TERMINALS OF ECU REAR TELEVISION CAMERA ASSEMBLY (a) Disconnect the T1 rear television camera assembly connector. (b) Measure the voltage on the wire harness side connector according to the value(s)
Lost Communication with ECM / PCM "A" (U0100,U0126,U0140,U0163,U0233,U1110)
DESCRIPTION These DTCs are stored if there is a malfunction in the CAN communication system connected to the rear television camera assembly. HINT: If CAN communication system DTCs are stored, they ma
SEE MORE:
Calibration
CALIBRATION NOTICE: When any of the following parts have been replaced, perform adjustment shown in the following table. If not, the parking support alert system may not operate correctly. ADJUST PARKING SUPPORT ALERT SYSTEM The necessary procedures (adjustment, calibration, initialization or regist
DCM Data Signal Circuit between Navigation ECU and DCM
DESCRIPTION This circuit is used to send and receive signals between the DCM (Telematics Transceiver), radio receiver assembly and navigation ECU. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) (a) Disconnect the G128 DCM (T
