Up-Shift Telltale (Manual Transmission Only)

The up-shift telltale is a LED display that is located in the Instrument Panel Cluster (IPC). The up-shift telltale display is operated by the IPC with software control. The up-shift telltale display turns ON when the IPC receives Class 2 information from the Vehicle Control Module (VCM) or the Powertrain Control Module (PCM) that requests the up-shift telltale to turn ON. The up-shift indicator in the instrument cluster turns on in order to indicate the optimum shift points for maximum fuel economy. Shift the transmission to the next higher gear range, if the conditions permit, when the lamp turns on. Control of the up-shift indicator is a function of the PCM/ VCM. The following conditions are monitored:
^ The engine speed
^ The load
^ The throttle position

These conditions determine if the PCM/ VCM will turn the lamp on. If the lamp is erratic or inoperative, verify the integrity of the circuit. Replace the PCM/VCM if no resolution is found.