The wireless access module switches the power mode to OFF, ACC, ON, or START according to the conditions when operating the engine start/stop button. The wireless access module controls the accessory voltage, ignition voltage 1, ignition voltage 2, and starter drive voltage by controlling the relay according to each power mode. The wireless access module monitors the ACC power supply circuit status via the feedback circuit. If the wireless access module detects a malfunction in the ACC feedback signal circuit, the DTC is set.
Any of the following are met:
When the engine start/stop button is pressed:
When the power mode is ON: