Routine 224 - Shift Indicator Light (SIL) & Audible Chimes "On"

The 3.8L SC is equipped with a Shift indicator light and audible chime that warns the customer when the engine oil or coolant overheats while the vehicle is operated at high Speeds (above 100 MPH) for extended periods of time. The Shift indicator light and chime will also warn the customer when the engine has reached too high an RPM for that gear.

The EEC-IV processor will reduce vehicle Speed by limiting Fuel to the engine when one of these overheat conditions has been reached. The customer may then notice a loss of power and/or a slight vibration. The Shift indicator light will illuminate and the audible chime will produce a steady tone, alerting the customer to upshift at this time. Full power will be restored and the Shift indicator light and chimes will turn off when the vehicle returns to normal operating temperatures.