Step  | Action  | Yes  | No  | 
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics  | |||
1  | Did you review the Exterior Lighting Systems Description and Operation and perform the necessary inspections?  | Go to Step 2  | |
2  | Verify that the backup lamps are always on. Do the backup lamps operate normally?  | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems  | Go to Step 3  | 
3  | 
 Do the backup lamps remain illuminated?  | Go to Step 4  | Go to Step 5  | 
4  | Replace or adjust the backup lamp switch (M/T) or the park/neutral position switch (A/T). Refer to Park/Neutral Position Switch Replacement or Park/Neutral Position Switch Adjustment in Automatic Transmission - 4L60-E. Did you complete the repair?  | Go to Step 6  | --  | 
5  | Repair the short to power in the backup lamp supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair?  | 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  |