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C1143 STEERING ANGLE SENSOR STC-21 < DTC/CIRCUIT DIAGNOSIS > C D E F H I J K L M A B STC N O P DTC/CIRCUIT DIAGNOSIS C1143 STEERING ANGLE SENSOR DTC Logic INFOID:0000000009177138 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. >> GO TO 2. 2. DTC REPRODUCTION PROCEDURE With CONSULT 1. Turn the ignition switch OFF to ON. 2. Perform “EPS” self-diagnosis. YES >> Proceed to diagnosis procedure. Refer to NO >> Inspection End. Diagnosis Procedure INFOID:0000000009177139 1. CHECK STEERING ANGLE SENSOR CIRCUIT Check steering angle sensor circuit. Refer to . Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace malfunctioning component. 2. CHECK TERMINALS AND HARNESS CONNECTORS Check the power steering control module pin terminals for damage or loose connection with harness connec- tor. YES >> Power steering control module is malfunctioning. Replace power steering oil pump assembly. ST-59, "Disassembly and Assembly" . NO >> Repair or replace malfunctioning component. DTC Display item Malfunction detected condition Possible cause C1143 ST ANG SEN CIRCUIT When a malfunction is detected in steering angle • Harness or connector ule |