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ECH-126 < DTC/CIRCUIT DIAGNOSIS > [HRA2DDT] U0111 LIN COMMUNICATION U0111 LIN COMMUNICATION DTC Logic INFOID:0000000010786461 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON and wait at least 3 seconds. 2. Check DTC. Is DTC detected? YES >> Proceed to ECH-126, "Diagnosis Procedure" NO >> INSPECTION END Diagnosis Procedure INFOID:0000000010786462 1. CHECK LIN COMMUNICATION CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector and alternator harness connector. 3. Check the continuity between ECM harness connector and alternator harness connector. 4. Also check harness for short to power and short to ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2. CHECK ALTERNATOR Check alternator. Refer to Is the inspection result normal? YES >> GO TO 3. NO >> Replace alternator. Refer to CHG-28, "HRA2DDT : Removal and Installation" . 3. CHECK DTC 1. Erase DTC. 2. Perform DTC confirmation procedure again. Refer to Is DTC detected again? YES >> Replace ECM. NO >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause U0111 Lost communication with battery energy ECM detects LIN communication error. • Harness and connectors (LIN communication circuit is • Alternator + − Continuity ECM Alternator Connector Terminal Connector Terminal F18 123 F54 2 Existed |