DTC B2801: TCM Abnormal

DTC detecting condition:

Transmission detects EyeSight not received.
Defective transmission
ATF temperature is high. (In this case, DTCs related to transmission are not detected.)

Trouble symptom:

All functions of EyeSight system do not operate.
High beam assist does not operate.

CAUTION:

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

CHECK DTC .
Read the DTC of [EyeSight] using the Subaru Select Monitor. Ref. to EYESIGHT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

Is DTC U0101 displayed? (Current code)

Yes : Perform the diagnosis of DTC U0101. Ref. to EYESIGHT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0101 LOST COMMUNICATION WITH TCM

No : Go to 2.
CHECK DTC .
Read the DTC of [Transmission] using the Subaru Select Monitor. Ref. to TRANSMISSION (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

Is DTC for [Transmission] displayed? (Current code)

Yes : Check the transmission. Ref. to TRANSMISSION (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE

No : Check the AT OIL TEMP light display. Ref. to TRANSMISSION (DIAGNOSTICS)>WARNING LIGHT ILLUMINATION PATTERN>AT OIL TEMP WARNING LIGHT DISPLAY