22 · Diagnostics

Variant coding error

Fault diagnosisVariant coding error

VARIANT CODING ERROR

The diagnostic equipment signals the following error: C1881 Variant error: the control unit is not suitable for the engine type

This error is signalled if the ABS control unit is not compatible with the engine management control unit

1	ENGINE MANAGEMENT CONTROL UNIT COMPATIBILITY CHECK	All OK	Problems met	Operation
		Results of the tests
1.8 16v 1.6 16v 2.4 20v 1.2 16v 1.4 16v ESP	Check that the design number for the engine management controlunit is compatible with the part number for the Model-Version-Series in question	Continue to Step 2	The design number is not compatible	Replace engine management control unit Op. 1056B82
1.9 JTD 8v ESP	Check that the design number for the engine management controlunit is compatible with the part number for the Model-Version-Series in question	Continue to Step 2	The design number is not compatible	Replace engine management control unit Op. 1060G80
2	ABS CONTROL UNIT COMPATIBILITY CHECK	All OK	Problems met	Operation
	Check that the design number of the ABS control unit is compatible with the spares number for the Model-Version-Series in question	Continue to Step 3	The design number is not compatible	Replace the ABS electro-hydraulic control unit with one that is compatible Op. 3340A12
3	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Delete the errors using the diagnostic equipment. Turn the key OFF and then ON to see whether the error is still present	End of diagnosis

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