P0578 MAZDA – Cruise Control Multi Function Input ‘A’ Circuit Stuck

P0578 MAZDA Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Cruise control system inoperative

P0578 MAZDA Possible Causes

Faulty Cruise Control Function Switch,Cruise Control Function Switch harness is open or shorted,Cruise Control Function Switch circuit poor electrical connection

P0578 MAZDA Description

The Engine Control Module (ECM) monitors the Cruise Control Multi-Function Input ‘A’. The ECM sets the OBDII code when the Cruise Control Multi-Function Input ‘A’ is not to factory specifications.