Power supply changeover control (Operation description)
| Flow of power supply changeover control | |
|---|---|
| 1 | Under the power OFF status, operate the engine switch without depressing the brake pedal < CVT vehicle > or the clutch pedal < M/T vehicle >. |
| 2 | By the operation of engine switch, OSS-ECU sends KOS-ECU the certification request via CAN, and at the same time, supplies the electric steering lock unit power to the electric steering lock. |
| 3 | In accordance with the certification request from OSS-ECU, KOS-ECU performs the certification communication with the keyless operation key. |
| 4 | KOS-ECU sends the key certification result to OSS-ECU via CAN. OSS-ECU compares its certification result with the KOS-ECU certification result, and goes to < 5 > when the results agree with each other. |
| 5 | OSS-ECU performs the certification communication with the electric steering lock via LIN (local LIN). The electric steering lock compares the certification result with that of OSS-ECU, and unlocks the steering lock when the results agree with each other. |
| 6 | After the certification communication with the electric steering lock, OSS-ECU sends the ACC output to ETACS-ECU. Then, ETACS-ECU drives the internal ACC relay to turn the power to ACC. |
| 7 | With the power supply set to ACC, when the engine switch is operated again without depressing the brake pedal < CVT vehicle > or clutch pedal < M/T vehicle >, OSS-ECU sends the IG1 output. Then, the current is supplied to the IG1 relay in ETACS-ECU, thus driving the IG1 relay and turning the power ON. (At this time, OSS-ECU also communicates with ECM to certify the engine start.) |
| 8 | With the power supply set to ON, when the engine switch is operated again without depressing the brake pedal < CVT vehicle > or clutch pedal < M/T vehicle >, the power of the CVT vehicle is turned OFF when the selector lever is in the P position, or the power is turned to ACC when in other than the P position. In the case with the M/T vehicle, the power is turned OFF. When the vehicle speed information, which is received via CAN, cannot be received or when the vehicle speed is 3 km/h or more, any standard engine switch operations will not be accepted. However, the power can be turned to ACC by the emergency stop operation*.
NOTE:
*: The emergency stop operation refers to the operation to press and hold the engine switch for 3 seconds or longer, or to repeatedly press the engine switch 3 times or more within 1 second. After the emergency stop operation, OSS-ECU will not accept the engine switch operation for 2 seconds.
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