System Description [11/2023 - ]

CXPI COMMUNICATION SYSTEM DESCRIPTION

The multiplex communication system [CXPI] is used for communication systems between body system components. When communication fails due to an open circuit, etc. on the communication line, the function that outputs a DTC related to the circuit according to the control master ECU and the fail-safe function that maintains minimum performance and protects the system activate. (The following shows the communication system and connected ECUs.)

HINT:

Each component has a fail-safe function which activates to maintain the minimum performance of the system and protect the system.
In the following table, "◦" indicates that the function applies, and "-" indicates that it does not.

Component	Master Control	CXPI Communication DTC Output Function
Main body ECU (multiplex network body ECU)	◦	Output function enabled
Power distribution box assembly	-	Output function disabled
Windshield wiper relay assembly	-	Output function disabled

LOAD OPERATION OUTPUT

Controls the load on and off based on multiplex communication signals.

Load	Power Distribution Box Assembly	Supports Operation Signal Communication
Rear window defogger	•	Supported
Taillight	•	Supported
Rear fog light*1	•	Supported
Back-up light	•	Supported
Outer rear view mirror	•	Supported
Instrument panel light	•	Supported
Mirror heater	•	Not supported
Passenger seat buckle switch*2	•	Supported
Occupant detection sensor*2	•	Supported
Rear RH seat belt buckle switch*3	•	Supported
Rear center seat belt buckle switch*3	•	Supported
Rear LH seat belt buckle switch*3	•	Supported
Front fog light*4	•	Supported

*1: w/ Rear Fog Light
*2: w/o Occupant Classification System
*3: w/ Rear Seat Belt Warning Light
*4: w/ Front Fog Light