P0503 Vehicle speed incoherence

			Test results
1	COMPONENT CONCERNED	CHECK USING DIAGNOSIS EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	ABS control unit	Connect the diagnosis equipment to the ABS control unit and check the consistency of the individual wheel speeds by selecting the following parameters: - RH front wheel speed - LH front wheel speed	Go to Step 2	Front speed sensor broken	Replace the front speed sensor Op. 3340A30
2	COMPONENT CONCERNED	CHECK USING DIAGNOSIS EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	ABS control unit	Connect the diagnosis equipment to the ABS control unit and check the consistency of the individual wheel speeds by selecting the following parameters: - RH rear wheel speed - LH rear wheel speed	End of diagnosis	Speed sensor faulty	Replace the front speed sensor Op. 3340A44