Cranking Holding Function Circuit: Description
The cranking holding control system provides current to the starter when the ECM detects the engine switch start signal (STSW). When the ECM judges that the engine has started , the system cuts current to the starter. When the ECM receives the STSW signal, the ACC (Accessory) relay is turned off to, prevents flickering of the combination meter, clock and audio system. Also, the STAR output signal travels through the ST cut relay and the park/neutral position switch assembly to the ST relay, causing the starter to activate.
When the engine is cranking, the starter operation signal is received by the STA terminal of the ECM.