199003085 - P0606 Control Unit faulty (Microprocessor)

This error is detected if the control unit recognizes a malfunction in the circuit through an internal logic evaluation.

		Test results
0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Select the following system on the diagnostic equipment: Bosch diesel injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9).Cancel the errors present and turn the ignition key OFF.Wait for the engine management control unit to switch off (min. 20 secs.). The main relay is switched off. If the engine is very hot, the fans remain on after the ignition is switched off. In this case, the control unit switches off automatically 10 secs after the fans are switched off.	Move on to Step 1
1	ERRORS CHECK	All OK	Problems encountered	Operation
	Drive the vehicle in different driving conditions (engine speed and engine load) for a long stretch.Listen out for any unusual noises and other system irregularities.At the end of the road test, check that none of the following errors is present using the diagnostic equipment:- P0335 with "Signal invalid" detail- P0606- P1618	End of diagnosis	The engine is not running smoothly	Proceed as instructed in the    See table D003 ENGINE NOT RUNNING SMOOTHLY / (IRREGULAR OPERATION)
			The engine is losing power	Proceed as instructed in the    See table D004 ENGINE NOT RUNNING SMOOTHLY
			The engine does not produce maximum performance	Proceed as instructed in the    See table D005 ENGINE DOES NOT PRODUCE BEST PERFORMANCE
			The engine response is poor	Proceed as instructed in the    See table D016 POOR ENGINE RESPONSE
			There is engine knock	Proceed as instructed in the    See table S003 ENGINE KNOCKING
			Error P0335 is present	Proceed as instructed in the    See Test 1060GI CHECK ENGINE SPEED
			Error P0606 is present	Proceed as instructed in the    See Test 1060GK CHECK CONTROL UNIT SOFTWARE AND HARDWARE
			Error P1618 is present	Proceed as instructed in the    See Test 1060GL CHECK OPERATION OF MAIN ENGINE CONTROL UNIT RELAY