Component Function Check

Component Function Check

1. CHECK DRIVER ASSISTANCE BUZZER

   CONSULT

   1. Select “ADAS buzzer 2” in “Active Test” mode of “ICC/ADAS 2”.

   2. Check that the function operates normally.

   Is the inspection result normal?

   YES >>

   Inspection End.

   NO >>

   Refer to Diagnosis Procedure.

Diagnosis Procedure

Diagnosis Procedure

1. CHECK DRIVER ASSISTANCE BUZZER POWER SUPPLY CIRCUIT

   1. Turn ignition switch OFF.

   2. Disconnect the driver assistance buzzer harness connector.

   3. Turn ignition switch ON.

   4. Check voltage between the driver assistance buzzer harness connector and ground.

      Terminal			Voltage (Approx.)
      (+)		(−)
      Driver assistance buzzer		Ground
      Connector	Terminal
      M149	1		Battery voltage

   Is the inspection result normal?

   YES >>

   GO TO 2.

   NO >>

   Repair the driver assistance buzzer power supply circuit.

2. CHECK DRIVER ASSISTANCE BUZZER CONTROL CIRCUIT

   1. Turn ignition switch OFF.

   2. Disconnect the ADAS control unit 2 harness connector.

   3. Check continuity between the ADAS control unit 2 harness connector and driver assistance buzzer harness connector.

      ADAS control unit 2		Driver assistance buzzer		Continuity
      Connector	Terminal	Connector	Terminal
      M148	1	M149	1	Yes

   4. Check continuity between the ADAS control unit 2 harness connector and ground.

      ADAS control unit 2		Ground	Continuity
      Connector	Terminal
      M148	13		No

   Is the inspection result normal?

   YES >>

   Replace the driver assistance buzzer. Refer to Removal and Installation.

   NO >>

   Repair the harness or connector.