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 (-) auxiliary battery terminal, correct the steering angle neutral point.
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-
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.
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PROCEDURE
| 1. | READ VALUE USING TECHSTREAM (BLIND SPOT MONITOR SENSOR LH STATUS) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power 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 | - |
| 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 | .gif) | GO TO BLIND SPOT MONITOR SYSTEM |
|
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| 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 |
|
| 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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