Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | Did you review the radio/audio system operation and perform the necessary inspections?  | --  | Go to Step 2  | Go to Symptoms  | 
2  | Verify that the radio display does not dim with the IP dimmer switch. Does the radio display dim normally?  | --  | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems  | Go to Step 3  | 
3  | 
 Does the test lamp light?  | --  | Go to Step 4  | Go to Step 5  | 
4  | Service the radio. Refer to Radio Replacement . Is the service of the radio complete?  | --  | Go to Step 6  | --  | 
5  | Locate and repair the open in CKT 1220 (GRY) between the radio and splice S205. Refer to Circuit Testing and 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 3  |