Early Fuel Evaporation System: Operation
Coolant temperature sensor is activated when ignition switch is in "ON" position. If engine coolant temperature is less than a specified value, ECM will supply current to EFE heater relay coils.
Coolant temperature sensor is activated when ignition switch is in "ON" position. If engine coolant temperature is less than a specified value, ECM will supply current to EFE heater relay coils.