Lexus ES manuals

Lexus ES: BSM Buzzer Malfunction (C2A5D)

DESCRIPTION

This DTC is stored when the rear television camera assembly receives an RCTA buzzer circuit malfunction signal from the blind spot monitor sensor RH.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C2A5D

BSM Buzzer Malfunction

The RCTA buzzer circuit is abnormal.

Blind spot monitor system

CAUTION / NOTICE / HINT

NOTICE:

  • When "!" is displayed on the multi-display assembly after the cable is disconnected from the negative (-) battery terminal, correct the steering angle neutral point.

    Click here

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the panoramic view monitor system may be needed.

    Click here

PROCEDURE

1.

READ VALUE USING TECHSTREAM (BLIND SPOT MONITOR SENSOR LH STATUS)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Blind Spot Monitor Slave / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Blind Spot Monitor Slave > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Buzzer Connection

Status of the buzzer connection

Valid or Invalid

Valid: Buzzer connection is valid

Invalid: Buzzer connection is invalid

-

Slave Side RCTA Function

Switches the RCTA function on and off

OFF or ON

OFF: RCTA function off

ON: RCTA function on

-

Body Electrical > Blind Spot Monitor Slave > Data List

Tester Display

Buzzer Connection

Slave Side RCTA Function

Result

Proceed to

"Valid" and "ON" is displayed for all items.

A

"Invalid" or "OFF" is displayed.

B

B

GO TO BLIND SPOT MONITOR SYSTEM

A

2.

CHECK DTC OUTPUT

(a) Clear the DTCs.

Chassis > Rear Camera > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Chassis > Rear Camera > Trouble Codes

Result

Proceed to

DTC C2A5D is output

A

DTC C2A5D is not output

B

B

REPLACE REAR TELEVISION CAMERA ASSEMBLY

A

3.

CHECK DTC OUTPUT (BLIND SPOT MONITOR SYSTEM (C1ABE))

(a) Check for DTCs.

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

Result

Proceed to

DTC C1ABE is output

A

DTC C1ABE is not output

B

A

GO TO DIAGNOSTIC TROUBLE CODE CHART (C1ABE)

B

GO TO BLIND SPOT MONITOR SYSTEM (PROBLEM SYMPTOMS TABLE)

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