Diagnostic Procedure with ECU Cancel Code: 21: Trouble symptom

Cruise control cannot be set. (Cancelled immediately.)
Cruise control cannot be released.
NOTE: Refer to DTC B28B8 for diagnostic procedure. Ref. to EyeSight (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B28B8 EyeSight SWITCH 1 ABNORMAL .