312002991 - P0604 Control unit faulty (RAM)

The error is detected after checking individual data (written values different from read values), after checking the address or after a writing test on the engine RAM

		Test results
1	ERROR CHECK	All OK	Problems encountered	Operation
	Check whether any of the following errors are present using the diagnostic equipment:- P1301- U0426- U1700	Move on to Step 3	Error P1301 is present	Move on to Step 2
			Error U0426 is present	Memorise the CODE. If it is not possible, replace the engine control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R
			Error U1700 is present	Continue as instructed in the    See table U1700 CAN network (NCM - NBC)
2	IMA CLASSIFICATION	All OK	Problems encountered	Operation
	In the Configurations section on the diagnostic tester, re-run the IMA classification and ensure it is successful	End of diagnosis	The classification is unsuccessful	Replace the engine management control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R
3	CONTROL UNIT REPLACEMENT	All OK	Problems encountered	Operation
	Replace the engine management control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R	End of diagnosis	-	-