Lexus ES: System Diagram
SYSTEM DIAGRAM

Communication Table
Sender | Receiver | Signal | Line |
Radio Receiver Assembly | Multi-display Assembly | Camera information signal | GVIF |
Radio Receiver Assembly | Rear Television Camera Assembly | Setting information signal | CAN |
Steering Sensor | Rear Television Camera Assembly | Steering angle signal | CAN |
ECM | Rear Television Camera Assembly | -
Vehicle information signal
-
Reverse signal
| CAN |
Main Body ECU (Multiplex Network Body ECU) | Rear Television Camera Assembly | -
Luggage compartment door courtesy switch signal
-
Vehicle information signal
| CAN |
Blind Spot Monitor Sensor*1 | Rear Television Camera Assembly | RCTA information signal | CAN |
Clearance Warning ECU Assembly*2 | Rear Television Camera Assembly | Sonar information signal | CAN |
-
*1: w/ Blind Spot Monitor System
-
*2: w/ Parking Support Alert System
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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)
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
DESCRIPTION This DTC is stored when the rear television camera assembly judges that it has an internal CAN malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area U1000
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DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Symptom Trouble Area Resistance between terminals 18 (CA4H) and 17 (
TERMINALS OF ECU PARKING ASSIST ECU (a) Disconnect the N44 parking assist ECU 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 N44-1 (+B) - N44-4 (GND1
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