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EC-894 < COMPONENT DIAGNOSIS > [MR18DE] P1128 THROTTLE CONTROL MOTOR P1128 THROTTLE CONTROL MOTOR Description INFOID:0000000001161867 The throttle control motor is operated by the ECM and it opens and closes the throttle valve. DTC Logic INFOID:0000000001161868 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON and wait at least 2 seconds. 2. Start engine and let it idle for 5 seconds. 3. Check DTC. Is DTC detected? YES >> Go to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000001161869 1. CHECK GROUND CONNECTION 1. Turn ignition switch OFF. 2. Check ground connection E15. Refer to Ground Inspection in . Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace ground connection. 2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Disconnect electric throttle control actuator harness connector. 2. Disconnect ECM harness connector. 3. Check the continuity between electric throttle control actuator harness connector and ECM harness con- DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1128 Throttle control motor ECM detects short in both circuits between • Harness or connectors (Throttle control motor circuit is shorted.) • Electric throttle control actuator (Throttle control motor) Electric throttle control actuator ECM Continuity Connector Terminal Connector Terminal F7 5 F10 1 Not existed 4 Existed 6 1 Existed 4 Not existed |