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TACHOMETER CONTROL CONSTRUCTION/OPERATION

BHE092255430T14

## System Wiring Diagram

1 | Instrument cluster
2 | Microcomputer
3 | Tachometer
4 | CAN control circuit
5 | PCM

## Operation

• The engine speed signal sent from the PCM via the CAN system is input to the microcomputer in the instrument cluster. The microcomputer calculates the current engine speed based on the engine speed signal, and sends an output signal to the tachometer.