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U0298 DC/DC CONVERTER ECH-129 < DTC/CIRCUIT DIAGNOSIS > [HRA2DDT] C D E F G H I J K L M A ECH N P O Is the inspection result normal? YES >> GO TO 3. NO >> GO TO 2. 2. CHECK VOLTAGE STABILIZER SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect DC/DC converter harness connector. 3. Disconnect ECM harness connector. 4. Check the continuity between DC/DC converter harness connector and ECM harness connector. 5. Also check harness for short to ground and short to power. Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace error-detected parts. 3. CHECK INTERMITTENT INCIDENT Perform intermittent incident. Refer to GI-41, "Intermittent Incident" . Is the inspection result normal? YES >> Replace DC/DC converter. Refer to ECH-314, "Removal and Installation" NO >> Repair or replace error-detected parts. 4. CHECK INTERMITTENT INCIDENT Perform intermittent incident. Refer to GI-41, "Intermittent Incident" . Is the inspection result normal? YES >> Replace ECM. Refer to ECH-313, "Removal and Installation" . NO >> Repair or replace error-detected parts. + – Continuity DC/DC converter ECM Connector Terminal Connector Terminal M22 9 F17 56 Existed |