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CLEARANCE SONAR SYSTEM > Clearance Sonar Main Switch Circuit

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DESCRIPTION

The clearance sonar main switch is installed on the integration control and panel assembly.
When the clearance sonar main switch in turned ON, an ON signal is sent to the clearance warning ECU through the BEAN line. The clearance sonar system operates according to this signal.

WIRING DIAGRAM

INSPECTION PROCEDURE

1.CHECK MULTIPLEX COMMUNICATION SYSTEM

Refer to how to proceed with troubleshooting (Click here).
If the multiplex communication system is operating normally, proceed to the next step.

NEXT

2.READ VALUE OF INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Turn the intelligent tester main switch ON.

Turn the clearance sonar main switch ON.

Select the item below in the Data List, and read its value displayed on the intelligent tester to check the clearance sonar main switch.

Result:

Clearance warning ECU:
Item	Measurement / Range (Display)	Normal Condition	Diagnostic Note
Main Switch	Clearance sonar main switch / OFF or ON	OFF: Clearance sonar main switch OFF ON: Clearance sonar main switch ON	-

REPLACE CLEARANCE WARNING ECU

NG

3.READ VALUE OF INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Turn the intelligent tester main switch ON.

Turn the clearance sonar main switch ON.

Select the item below in the Data List, and read its value displayed on the intelligent tester to check the clearance sonar main switch.

Result:

Integration control and panel assembly:
Item	Measurement / Range (Display)	Normal Condition	Diagnostic Note
Sonar Main Switch	Clearance sonar main switch / OFF or ON	OFF: Clearance sonar main switch OFF ON: Clearance sonar main switch ON	-

REPLACE CLEARANCE WARNING ECU

REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY