DTC B28A5: Engine Torque Limiter Control Prohibit

DTC detecting condition:

Detected when abnormal data is transmitted from stereo camera to engine control module (ECM) and the engine control module (ECM) prohibits the AT rapid start prevention control,
or when the engine control module (ECM) prohibits the AT rapid start prevention control.
Defective CAN system
Defective engine control module (ECM)
Defective stereo camera
Defective combination meter
Incorrect assembly of combination meter (When the combination meter that is not for EyeSight is installed.)

Trouble symptom:

All functions of EyeSight system do not operate.

CAUTION:

Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to EYESIGHT (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION

CHECK COMBINATION METER .
Check the part number of the combination meter.

Is the combination meter genuine?

Yes : Go to 2.

No : Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER
CHECK LAN SYSTEM .
Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE

Is the check result OK?

Yes : Go to 3.

No : Repair or replace the faulty portion according to the inspection result.
CHECK ECM .
Perform the diagnosis for the engine. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE

Is the check result OK?

Yes : Go to 4.

No : Repair or replace the faulty portion according to the inspection result.
CHECK CONNECTOR .
Check the ECM connector and the stereo camera connector.

Is the check result OK?

Yes : Go to 5.

No : Repair or replace the faulty portion according to the inspection result.
CHECK STEREO CAMERA .
Read the DTC of [EyeSight] using the Subaru Select Monitor. Ref. to EYESIGHT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

Is any DTC other than DTC B28A5 displayed? (Current code)

Yes : Perform the diagnosis of DTCs other than B28A5. Ref. to EYESIGHT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

No : Go to 6.
CHECK STEREO CAMERA .
1. Using the Subaru Select Monitor, perform the clear memory of [EyeSight]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY
2. Read the DTC of [EyeSight] using the Subaru Select Monitor. Ref. to EYESIGHT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)
Is DTC B28A5 displayed? (Current code)

Yes : Replace the stereo camera. Ref. to EYESIGHT>STEREO CAMERA

No : Currently, it is normal. Finish the diagnosis.