Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | 
 Are any of the DTCs present?  | --  | Go to Step 2  | Go to Step 3  | 
2  | 
 Are any of the DTCs present?  | --  | Go to Step 4  | System OK  | 
3  | Perform the Functional Check for the appropriate system. Does the system function properly?  | --  | System OK  | Go to Step 4  | 
4  | Refer to Self-Diagnostics for diagnosis. Does the system function properly?  | --  | System OK  | --  |