Driver Assistance System (DTC/Circuit Diagnosis)

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. Refer to Removal and Installation .

NO

GO TO 2.

1. Turn ignition switch OFF.
2. Remove warning system switch. Refer to Removal and Installation .
3. Check warning system switch. Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 3.

NO

Replace the warning system switch. Refer to Removal and Installation .

Check continuity between warning system switch harness connector terminal and the ground.

Is the inspection result normal?

YES

GO TO 4.

NO

Repair harness or connector.

1. Disconnect the ADAS control unit connector.
2. Check continuity between the ADAS control unit harness connector and warning system switch harness connector.

   ADAS control unit		Warning system switch		Continuity
   Connector	Terminal	Connector	Terminal
   B104	18	M126	6	Yes

Is the inspection result normal?

YES

GO TO 5.

NO

Repair the harnesses or connectors.

Check continuity between the ADAS control unit harness connector and ground.

Is the inspection result normal?

YES

Replace the ADAS control unit. Refer to Removal and Installation .

NO

Repair the harnesses or connectors.