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.)
Tech Tips
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 |
| No. 1 semiconductor power integration ECU | - | Output function disabled |
| No. 2 semiconductor power integration ECU (w/ PTC Heater) | - | Output function disabled |
| No. 3 semiconductor power integration ECU | - | Output function disabled |
LOAD OPERATION OUTPUT
Controls the load on and off based on multiplex communication signals.
| Load | No. 1 semiconductor power integration ECU | No. 2 semiconductor power integration ECU* | No. 3 semiconductor power integration ECU | Supports operation signal communication |
|---|---|---|---|---|
| Headlight ECU sub-assembly LH | ● | - | - | Not supported |
| Headlight ECU sub-assembly RH | ● | - | - | Not supported |
| Air conditioning water pump | ● | - | - | Supported |
| PTC heater*1 | - | ● | - | Supported |
| Stop light | - | - | ● | Not supported |
| Rear taillight | - | - | ● | Supported |
| Rear fog light*2 | - | - | ● | Supported |
| Back-up light | - | - | ● | Not supported |
*1: w/ PTC Heater
*2: w/ Rear Fog Light