Circuit description

If the trunk entry unlock function does not work, a request code might not be transmitted from the trunk. If the entry function works properly on other doors, the electrical key transmitter sub-assembly and the door control receiver are functioning properly. It can therefore be assumed that something is wrong with the transmission of a request code (communication between the collation ECM (smart key ECM assembly) and the electrical key antenna (trunk exterior antenna)), that the switch located outside the trunk is faulty, or that interference from external radio waves is present.