Step  | Action  | Values  | Yes  | No  | 
|---|---|---|---|---|
1  | 
 Does the battery voltage available at the backup lamp socket positive terminal equal the specified value?  | 11-14 V  | Go to Step 3  | Go to Step 2  | 
2  | Repair the open circuit between fuse F8 and the backup lamps. Is the repair complete?  | --  | System OK  | --  | 
3  | Connect an ohmmeter between ground and the negative terminal at the bulb socket. Is the resistance equal to the specified value?  | 0 ohms  | Go to Step 4  | Go to Step 5  | 
4  | Replace the faulty backup lamps. Is the repair complete?  | --  | System OK  | --  | 
5  | 
 Does the battery voltage available at terminal 1 (or terminal A5, if equipped with A/T) equal the specified value?  | 11-14 V  | Go to Step 7  | Go to Step 6  | 
6  | Repair the open circuit between the backup lamps and the reverse switch (or the neutral safety/backup switch if equipped with A/T). Is the repair complete?  | --  | System OK  | --  | 
7  | 
 Does the continuity between terminals 1 and 2 (terminals A3 and A5, if equipped with A/T) equal the specified value?  | 0 ohms  | Go to Step 9  | Go to Step 8  | 
8  | Replace the reverse switch (neutral safety/backup switch, if equipped with A/T). Is the repair complete?  | --  | System OK  | --  | 
9  | Repair the ground circuit between the reverse switch (neutral safety/backup switch, if equipped with A/T) and ground G402. Is the repair complete?  | --  | System OK  | --  |