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STC-126 < COMPONENT DIAGNOSIS > [WITH 4WAS] C1930 4WAS FRONT CONTROL UNIT C1930 4WAS FRONT CONTROL UNIT Description INFOID:0000000000958888 • It transmits the value calculated by 4WAS main control unit to 4WAS front control unit with 4WAS communi- cation line (line for 4WAS system only). 4WAS front control unit controls 4WAS front actuator according to DTC Logic INFOID:0000000000958889 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. RECHECK DTC With CONSULT-III 1. Turn the ignition switch OFF to ON. 2. Perform 4WAS main control unit self-diagnosis. Is DTC “C1930” detected? YES >> Proceed to diagnosis procedure. Refer to STC-126, "Diagnosis Procedure" . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000000958890 1. PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT) With CONSULT-III Perform 4WAS main control unit self-diagnosis. Is any DTC other than “C1930” detected? YES >> Check the error system. NO >> Perform 4WAS front control unit self-diagnosis. DTC Items (CONSULT-III screen terms) Diagnostic item is detected when... Possible cause C1930 4WAS FRONT ECU An error is detected on 4WAS front control unit side. 4WAS front control unit |