System Operation: Tachometer

The PCM uses the CKP sensor to measure the engine RPM. The IPC uses the engine RPM data message from the PCM to control the tachometer.

The base and optional IPC tachometers appear differently but function the same. The base IPC uses an analog gauge. The optional IPC uses a digital display that provides a 6, 000 RPM bar graph or a simulated 7, 000 RPM analog gauge display depending on the selected display mode.