Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | Did you perform the Lighting Systems Diagnostic System Check?  | --  | Go to Step 2  | |
2  | Inspect CKT 640 (ORN) for an open between S340 and the inoperative vanity mirror. Refer to Testing for Continuity in Wiring Systems. Is CKT 640 OK?  | --  | Go to Step 3  | Go to Step 5  | 
3  | Inspect CKT 1250 (BLK) for an open between S339 and the inoperative vanity mirror. Refer to Testing for Continuity in Wiring Systems. Is CKT 1250 OK?  | --  | Go to Step 4  | Go to Step 5  | 
4  | Replace the vanity mirror. Refer to Vanity Mirror Lamp Replacement in Lighting Systems. Is the vanity mirror replacement complete?  | --  | Go to Step 6  | --  | 
5  | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?  | --  | Go to Step 6  | --  | 
6  | Operate the system in order to verify the repair. Did you correct the condition?  | --  | System OK.  | Go to Step 2  |