1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner to the diagnostic socket. Check that there are no faults in the instrument panel	Move on to Step 2	Errors present	Continue following the instructions provided by the diagnostic equipment
2	ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check connections between instrument panel, Body Computer and engine management control unit See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Move on to Step 3	Wiring defective	Repair/replace the wiring.
3	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the Examiner equipment connected to the diagnostic socket, check the operation of the display in active diagnosis	End of diagnosis	Rev counter not working due to stepper motor failure	Replace the Instrument Panel Op. 5560B10 CONTROL PANEL - R+R

With the engine running, the rev counter does not work or works irregularly.