Diagnosis Procedure (With Front and Rear Sonar System)

SONAR BUZZER CIRCUIT INSPECTION


Description

When the A/T selector lever is not it park or neutral, a stationary object will be detected by the sonar sensors causing the front or rear sonar buzzer to sound a tone. As the vehicle moves closer to the object, the rate of the tone will increase. When the object is very close to the vehicle, the tone will sound continuously.




SONAR BUZZER CIRCUIT INSPECTION


Diagnosis Procedure (With Front and Rear Sonar System)

Regarding Wiring Diagram information, Sonar Control Unit For Front and Rear Sonar System.
1.CHECK BUZZERS
Component Inspection.
Is the inspection result normal?
YES - GO TO 2.
NO - Replace buzzer. Service and Repair.
2.CHECK BUZZER CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect sonar control unit connectors and sonar buzzer connectors.





3. Check continuity between sonar control unit harness connectors
(A, B) and sonar buzzer harness connectors (C).










4. Check continuity between sonar control unit harness connectors
(A, B) and ground.





Are the inspection results normal?
YES - Inspection End.
NO - Repair harness or connector.