Instrument Cluster Description and Operation: Tachometer
The instrument panel cluster (IPC) displays the engine speed as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the engine speed.
The instrument panel cluster (IPC) displays the engine speed as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the engine speed.