CLEARANCE SONAR SYSTEM > No. 1 Clearance Warning Buzzer Circuit

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WIRING DIAGRAM


E110339E01


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester main switch ON.

  1. Turn the clearance sonar main switch ON.

  1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the buzzer operates.

    Clearance warning ECU: 
    Item
    		Vehicle Condition / Test Details
    		Diagnostic Note
    Front Buzzer
    		Front buzzer (Clearance warning buzzer) / STOP or OPERATE
    		-

    OK:
    No. 1 clearance warning buzzer sounds.



OK
REPLACE CLEARANCE WARNING ECU
NG


2.CHECK WIRE HARNESS (NO. 1 CLEARANCE WARNING BUZZER - CLEARANCE WARNING ECU)
E107570E02

  1. Disconnect the A40 ECU connector.

  1. Disconnect the L32 buzzer connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A40-9 (CBZ) - L32-2
    		Always
    		Below 1 Ω
    A40-9 (CBZ) - Body ground
    		Always
    		1 MΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK NO. 1 CLEARANCE WARNING BUZZER (TERMINAL VOLTAGE)


    E108074E03

  1. Disconnect the L32 buzzer connector.

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L32-1 - Body ground
    		Engine switch on (IG)
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR (NO. 1 CLEARANCE WARNING BUZZER - BATTERY)
OK

REPLACE NO. 1 CLEARANCE WARNING BUZZER