LDW & LDP

WARNING SYSTEMS SWITCH CIRCUIT





Component Function Check
1.CHECK WARNING SYSTEMS SWITCH INPUT SIGNAL
1. Turn the ignition switch ON.
2. Select the DATA MONITOR item "WARN SYS SW" of "ICC/ADAS" with CONSULT-III.
3. With operating the warning systems switch, check the monitor status.





Is the inspection result normal?
YES - Warning systems switch circuit is normal.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT
1. Turn the ignition switch ON.
2. Check voltage between ADAS control unit harness connector and ground.





Is the inspection result normal?
YES - Replace the ADAS control unit. ADAS Control Unit.
NO - GO TO 2.
2.CHECK WARNING SYSTEMS SWITCH
1. Turn ignition switch OFF.
2. Remove warning systems switch.
3. Check warning systems switch. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 3.
NO - Replace the warning systems switch. LDW & LDP.
3.CHECK WARNING SYSTEMS SWITCH GROUND CIRCUIT
Check continuity between twin switch harness connector terminal and the ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair harness or connector.
4.CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR OPEN
1. Disconnect the ADAS control unit connector.
2. Check continuity between the ADAS control unit harness connector and twin switch harness connector.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair the harnesses or connectors.
5.CHECK WARNING SYSTEMS SWITCH SIGNAL INPUT CIRCUIT FOR SHORT
Check continuity between the ADAS control unit harness connector and ground.





Is the inspection result normal?
YES - Replace the ADAS control unit. ADAS Control Unit.
NO - Repair the harnesses or connectors.




Component Inspection
1.CHECK WARNING SYSTEMS SWITCH
Check continuity of warning systems switch.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace warning systems switch.