Electronic Idle Speed Control (ELR)
1. Electronic idle speed control (ELR)The engine speed sensor (L3) at the starter ring gear detects the engine speed (144 pulses per revolution) and sends it in the form of an alternating voltage to the EDS control unit. The EDS control unit processes the idle speed signal and compares the actual reading with the specification.
In this way the idle speed is held constant by the electromagnetic actuator independently of engine load. At a coolant temperature below 60° C, the idle speed specification is increased according to a preset reference map.
Block Diagram, Idle Speed Control (ELR):
