23 · Diagnostics

Control unit error

Fault diagnosisControl unit error

CONTROL UNIT ERROR

The diagnostic equipment signals the following error: "C1550 - Control Unit Error"

This error is signalled if the control unit detects an internal error during its continuous check on the components

2	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Delete the errors using the diagnostic equipment. Carry out a road test See Test 3340OA A.B.S. SYSTEM ACTUATION CHECK to ensure that the control unit checks whether there are any errors still present. Return to the workshop and check that the fault is no longer present using the diagnostic equipment.	End of diagnosis

CHECK ON CORRECT OPERATION

All OK

Problems encountered

Operation

Delete the errors using the diagnostic equipment.

Carry out a road test

to ensure that the control unit checks whether there are any errors still present.

Return to the workshop and check that the fault is no longer present using the diagnostic equipment.

End of diagnosis

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