Diesel Data: Automotive Repair

Cranking Signal: Description and Operation


Start Signal And Inhibitor Switch Circuit:




AUTOMATIC TRANSMISSION


Ignition Switch-ST Circuit:




MANUAL TRANSMISSION


The ignition switch supplies "On" and "Start" information to the ECU to position the idle speed control components. The ignition switch "ON" signal is provided to the ECU through the control relay. Refer to the images for the "START" signal.