Description of On-Board Diagnostics

FAIL-SAFE FUNCTION




a. When communication fails in any of the CAN bus lines (communication lines) due to a short circuit or any other causes, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning.
b. This function operates for each system when communication is impossible.

HINT:
- Rx: Reception from each ECU (sensor).
- Tx: Transmission to each ECU (sensor).