Reduced Engine Power Indicator

The reduced engine power indicator is controlled by the following components:
^ The powertrain control module (PCM)
^ The instrument cluster

The PCM sends a Class 2 message through circuit 1036 to the instrument cluster in order to turn on the indicator when problems with the engine have been detected.

The instrument cluster turns on the reduced engine power indicator under the following conditions:
^ Class 2 communication has been lost between the instrument cluster and the PCM.
^ The 3 second bulb test is occurring.