Lexus ES: System Diagram
SYSTEM DIAGRAM
(a) The CAN communication system is composed of 5 buses.
.png) | CAN Main Bus Line | .png) | Terminating Resistor |
.png) | CAN Branch Line | * | Gateway Function Equipped ECU |
.png) | Bus Monitoring Direction | - | - |
| Connected to | Code | ECU/Sensor Name | CAN DTC Storage | Note |
|---|---|---|---|---|
| - | CGW | Central Gateway ECU (Network Gateway ECU) | - | - |
| - | DLC3 | DLC3 | - | - |
| Bus 1 | F-CAM | Forward Recognition Camera | Available | - |
| F-MR | Millimeter Wave Radar Sensor Assembly | Available | - | |
| BSM | Blind Spot Monitor Sensor RH | Available | w/ Blind Spot Monitor System | |
| R-CA | Rear Television Camera Assembly | Available | - | |
| CS | Clearance Warning ECU Assembly | Available | w/ Parking Support Brake System | |
| PAC | Parking Assist ECU | Available | w/ Panoramic View Monitor System | |
| CAN J/C NO. 1 | No. 1 CAN Junction Connector | - | - | |
| CAN J/C NO. 6 | No. 6 CAN Junction Connector | - | - | |
| ST | No. 1 CAN Junction Terminal | - | - | |
| Bus 2 | ENG | ECM | Available | - |
| J/C NO. 2 | No. 2 Junction Connector | - | - | |
| CAN J/C NO. 4 | No. 4 CAN Junction Connector | - | - | |
| Bus 3 | AV | Radio Receiver Assembly | Available | - |
| DCM | DCM (Telematics Transceiver) | Available | w/ Telematics Transceiver | |
| ANC | Stereo Component Equalizer Assembly | Available | w/ Active Noise Control System | |
| YGW | Option Connector (Bus Buffer ECU) | - | w/ CAN Compatible Optional Devices | |
| CAN J/C NO. 4 | No. 4 CAN Junction Connector | - | - | |
| Bus 4 | TPMS | Tire Pressure Warning ECU and Receiver | Available | - |
| OCS | Occupant Detection ECU | Available | - | |
| SUS | Absorber Control ECU | Available | w/ AVS System | |
| BRK | Brake Actuator Assembly | Available | - | |
| EPS | Rack and Pinion Power Steering Gear Assembly | Available | - | |
| STR | Steering Sensor | - | - | |
| SRS | Airbag ECU Assembly | Available | - | |
| CAN J/C NO. 2 | No. 2 CAN Junction Connector | - | - | |
| CAN J/C NO. 4 | No. 4 CAN Junction Connector | - | - | |
| CAN J/C NO. 7 | No. 7 CAN Junction Connector | - | - | |
| Bus 5 | LITS | Headlight ECU Sub-assembly RH | Available | - |
| MIR-R | Outer Mirror Control ECU Assembly RH | Available | w/ Seat Position Memory System | |
| DST | Position Control ECU Assembly LH | - | w/ Seat Position Memory System | |
| MIR-L | Outer Mirror Control ECU Assembly LH | Available | w/ Seat Position Memory System | |
| A/C | Air Conditioning Amplifier Assembly | Available | - | |
| MB | Main Body ECU (Multiplex Network Body ECU) | Available | Connected to LIN communication system | |
| HUD | Meter Mirror Sub-assembly | Available | w/ Headup Display System | |
| SMT | Certification ECU (Smart Key ECU Assembly) | Available | - | |
| LITM | Headlight ECU Sub-assembly LH | Available | - | |
| T&T | Multiplex Tilt and Telescopic ECU | Available | w/ Power Tilt and Power Telescopic System | |
| MET | Combination Meter Assembly | Available | - | |
| BKD | Luggage Closer Motor Assembly | Available | w/ Power Trunk Lid System | |
| CAN J/C NO. 5 | No. 5 CAN Junction Connector | - | - | |
| CAN J/C NO. 8 | No. 8 CAN Junction Connector | - | - | |
| J/C NO. 1 | No. 1 Junction Connector | - | - |
READ NEXT:
Parts Location
PARTS LOCATION ILLUSTRATION *1 HEADLIGHT ECU SUB-ASSEMBLY RH *2 BRAKE ACTUATOR ASSEMBLY *3 FORWARD RECOGNITION CAMERA *4 ECM *5 RACK AND PINION POWER STEERING GEAR ASSEMBLY
Parts Location
PARTS LOCATION ILLUSTRATION *1 HEADLIGHT ECU SUB-ASSEMBLY RH *2 BRAKE ACTUATOR ASSEMBLY *3 FORWARD RECOGNITION CAMERA *4 ECM *5 RACK AND PINION POWER STEERING GEAR ASSEMBLY
Precaution
PRECAUTION NOTICE FOR INITIALIZATION NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System See Proce
SEE MORE:
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be dis
Skid Control ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Skid Control ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Skid Control (ABS/VSC/TRAC)" is indicated on the "Communication Bus Check" screen of the Techstream.
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Communication
