B Series Truck 2WD L4-2184cc 2.2L 2200 2-bbl (1990)
Voltage Signal: Description and Operation
Electrical Load Signals
Electrical load signals (component "ON") are sent to the ECU from the headlight and blower motor switches. When these loads are present, the ECU
activates the idle speed control (ISC) valve as needed to maintain correct idle speed.
