Function Sequence For Start Begin

When ignition switch is turned to the START position, the ECM receives the start signal (ignition switch status signal) from BCM and actuates the starter relay. Furthermore the starter relay actuates the starter front-end relay. It take is to prevent a drop in the battery voltage below a defined voltage value during the starting procedure of the engine. this is realized through limitation of the starter current some of the time. Note here during the starting procedure. Before and after the start the starter-plus line must be free of tension otherwise the voltage dip limiter is defective.