No.1 ABS HU/CM DOES NOT RESPOND TO M-MDS[MULTIPLEX COMMUNICATION SYSTEM (AJ (3.0L Duratec))]

id0903g7819200

STEP	INSPECTION		ACTION
1	INSPECT ABS HU/CM CONNECTOR Turn the ignition switch off. Disconnect the ABS HU/CM connector. Inspect the ABS HU/CM connector for damage. Is the ABS HU/CM connector normal?	Yes	Go to the next step.
		No	Replace the wiring harness. Perform the network test.
2	INSPECT CIRCUIT BETWEEN DLC-2 AND ABS HU/CM FOR OPEN CIRCUIT Measure the resistance between ABS HU/CM terminal F (harness-side) and DLC-2 terminal D. Is the resistance less than 5 ohms?	Yes	Go to the next step.
		No	Replace the wiring harness. Perform the network test.
3	INSPECT ABS HU/CM OPERATION Disconnect all the ABS connectors. Inspection: •  Corrosion •  Terminal separation Connect all the ABS HU/CM connectors and verify that their positions are correct. Operate the system and inspect for any malfunction. Is there any malfunction?	Yes	Replace the ABS HU/CM. Perform the network test.
		No	The system operates normally. The malfunction may result from loose connectors or corrosion. Clear the DTC. Repeat the self-test.