DTC U1D0B: CONTINUINGLY Invalid Authentication Data Received From Brake System Control Module Ch-Bus

DTC detecting condition:

Authentication communication between the electric brake booster control module and the control module in which the DTC was detected failed consecutively.

Trouble symptom:

The warning light of the control module in which the DTC was detected illuminates.

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

CHECK DTC .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor, perform the clear memory of the control module in which the DTC was detected. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
3. Using the Subaru Select Monitor, read the DTC of the control module in which it was detected. Ref. to COMMON (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
When DTC U1D00 is displayed, go to A. (Current code)

When DTC U1D07 is displayed, go to B. (Current code)

When DTC U1D08 is displayed, go to C. (Current code)

When DTC U1D09 is displayed, go to D. (Current code)

When DTC U1D0A is displayed, go to E. (Current code)

When DTC U1D0B is displayed, go to F. (Current code)

When DTC U1D0C is displayed, go to G. (Current code)

When DTC U1D0F is displayed, go to H. (Current code)

If no DTC is displayed, go to I.

Perform the diagnosis of the following "references" for displayed DTCs.