Sonar Cancel Switch Circuit

SONAR CANCEL SWITCH CIRCUIT





Description
The sonar control unit turns the sonar system activation OFF when inputting the cancel switch signal.




Component Function Check
1.SONAR CONTROL UNIT DATA MONITOR INSPECTION
Check "CANCEL SW" with "DATA MONITOR" of "SONAR".

Cancel Switch
Vehicle condition Indication
While pressing the sonar
cancel switch : On
Other than above : Off

- INSPECTION END




Diagnosis Procedure
1.CHECK HARNESS CANCEL SWITCH SIGNAL CIRCUIT
1. Disconnect sonar control unit connector and cancel switch connector.
2. Check continuity between sonar control unit harness connector and cancel switch harness connector.





3. Check continuity between sonar control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK VOLTAGE SONAR CONTROL UNIT
1. Connect sonar control unit connector.
2. Turn ignition switch ON.
3. Check voltage between sonar control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Replace sonar control unit. Service and Repair.
3.CHECK CANCEL SWITCH
1. Turn ignition switch OFF.
2. Check sonar cancel switch function. SEE Component Function Check.
Is the inspection result normal?
YES - GO TO 4.
NO - Replace sonar cancel switch. Removal And Installation.
4.CHECK HARNESS CANCEL SWITCH GROUND CIRCUIT
1. Turn ignition switch ON.
2. Check continuity between cancel switch harness connector and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Repair harness or connector.