C1A40

C1A40 SYSTEM SWITCH CIRCUIT





DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine and wait for approximately 10 minutes or more.
2. Perform "All DTC Reading" with CONSULT-III.
3. Check if the "C1A40" is detected as the current malfunction in "Self Diagnostic Result" of "ICC/ADAS".
Is "C1A40" detected as the current malfunction?
YES - SEE Diagnosis Procedure.
NO - Intermittent Incident.




Diagnosis Procedure
1.CHECK SELF-DIAGNOSIS RESULTS
Check if "U1000" is detected other than "C1A40" in "Self Diagnostic Result" of "ICC/ADAS".
Is "U1000" detected?
YES - Perform the CAN communication system inspection. Repair or replace the malfunctioning parts. Cruise Control.
NO - GO TO 2.
2.CHECK DATA MONITOR
Check that "IBA SW" operate normally in "DATA MONITOR" of "ICC/ADAS".
Is the inspection result normal?
YES - Intermittent Incident.
NO - GO TO 3.
3.CHECK HARNESS BETWEEN ADAS CONTROL UNIT AND IBA OFF SWITCH
1. Disconnect ADAS control unit connector.
2. Check for continuity between the ADAS control unit harness connector and IBA OFF switch harness connector.





3. Check for continuity between ADAS control unit and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair the harnesses or connectors.
4.CHECK IBA OFF SWITCH GROUND CIRCUIT
Check for continuity between IBA OFF switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair the harnesses or connectors.
5.CHECK IBA OFF SWITCH
1. Turn the ignition switch OFF.
2. Disconnect the IBA OFF switch connector.
3. Check the IBA OFF switch. SEE Component Inspection (IBA OFF Switch).
Is the inspection result normal?
YES - Replace the ADAS control unit. Service and Repair.
NO - Replace the IBA OFF switch.




Component Inspection (IBA OFF Switch)
1.CHECK IBA OFF SWITCH
Check for continuity of IBA OFF switch.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace the IBA OFF switch.