Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
1  | Did you perform the Lighting Diagnostic System Check?  | --  | Go to Step 2  | |
2  | Are the backup lights ON with the ignition switch in the OFF position?  | --  | Go to Step 3  | Go to Step 4  | 
3  | Disconnect the park/neutral switch. are the backup lamps still ON?  | --  | Go to Step 4  | Go to Step 5  | 
4  | Locate and repair short to voltage in CKT 24 (LT GRN). Is the repair complete?  | --  | Go to Step 9  | --  | 
5  | With the park/neutral switch disconnected, check for continuity with DMM between cavities C and F of connector C2. Is continuity present?  | --  | Go to Step 6  | Go to Step 4  | 
6  | With ignition OFF and park/neutral switch disconnected, check for B+ (battery voltage) from CKT 139 (PNK) to ground. Is B+ present?  | --  | Go to Step 7  | Go to Step 8  | 
7  | Locate and repair short to voltage in CKT 139 (PNK). Is the repair complete?  | --  | Go to Step 8  | --  | 
8  | Replace the park/neutral switch. Refer to Park/Neutral Position Switch Replacement in Transmissions. Is the repair complete?  | --  | Go to Step 9  | --  | 
9  | Operate the system in order to verify the repair. Did you correct the condition?  | --  | System OK  | Go to Step 2  |