Honda Civic manuals

Subaru Legacy Service Manual: Dtc b28a4 eyesight communication(eps)

Detected when the power steering control module (EPS CM) detects the malfunction of stereo camera.

DTC DETECTING CONDITION:

Defective CAN system

Defective EPS CM

Defective stereo camera

TROUBLE SYMPTOM:

All functions of EyeSight system do not operate.

EyeSight warning light illuminates.

STEPCHECKYESNO

1.CHECK LAN SYSTEM.

Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE

Is the DTC displayed in the LAN system-

Perform the diagnosis according to DTC.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B28A4 EyeSight COMMUNICATION(EPS)

2.CHECK EPS CM.

Perform the diagnosis for the power steering system. Basic Diagnostic Procedure > PROCEDURE

Is DTC displayed-

Perform the diagnosis according to DTC.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B28A4 EyeSight COMMUNICATION(EPS)

3.CHECK CONNECTOR.

Check the EPS CM connector and the stereo camera connector.

Is the connector OK-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B28A4 EyeSight COMMUNICATION(EPS)

Repair or replace the connector.

4.CHECK STEREO CAMERA.

Read the DTC. Diagnostic Code(s) Display

Is another DTC displayed-

Perform the diagnosis according to DTC.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B28A4 EyeSight COMMUNICATION(EPS)

5.CHECK STEREO CAMERA.

1) Clear the memory. Clear Memory Mode

2) Read the DTC. Diagnostic Code(s) Display

Is the same DTC displayed-

Replace the stereo camera. Stereo Camera > REMOVAL

Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE:

In this case, temporary poor contact of connector, or temporary open or short circuit of harness may be the cause.

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Other materials:

Caution
• Prior to starting work, pay special attention to the following:1. Always wear work clothes, a work cap, and protective shoes. Additionally, wear a helmet, protective goggles, etc. if necessary.2. Protect the vehicle using a seat cover, fender cover, etc.3. Prepare the service tools, clean cl ...

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