Auto Idle Stop Control Signal: Notes

The PCM monitors signals from control units, sensors and switches to determine if the vehicle can execute/continue an auto idle stop or if it can restart the engine. When the PCM determines that the auto idle stop can executed, it stops the fuel injection and stops the engine. When it determines an engine restart, it operates the starter and resumes fuel injection to start the engine. If the PCM receives a malfunction signal from a control unit or the conditions are not met, the auto idle stop is not executed.