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.)
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 |
| Headlight unit assembly LH* | - | Output function disabled |
| Headlight unit assembly RH* | - | Output function disabled |
*: for LED Type Turn Signal Light
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 |
| Rear fog light | ● | Supported |
| Back-up light | ● | Not supported |
| Dome cut relay | ● | Supported |
| Mirror heater*1 | ● | Supported |
| Taillight | ● | Supported |
| Seat heater*2 | ● | Not supported |
| Front fog light*3 | ● | Supported |
| Rear center seat belt buckle switch | ● | Supported |
| Rear RH seat belt buckle switch | ● | Supported |
| Rear LH seat belt buckle switch | ● | Supported |
| +BA relay | ● | Supported |
*1: w/ Mirror Heater
*2: w/ Seat Heater
*3: w/ Front Fog Light