Step  | Action  | Value(s)  | Yes  | No  | 
|---|---|---|---|---|
| 
 Important: Inspect for inoperative bulbs before beginning diagnostic procedure.  | ||||
1  | Did you perform the Lighting Diagnostic System Check?  | --  | Go to Step 2  | |
2  | 
 Does the test lamp light?  | --  | Go to Step 3  | Go to Step 4  | 
3  | Connect a fused jumper between CKT 139 (PNK) cavity C and CKT 24 (LT GRN) cavity F of the park/neutral position and backup lamp switch connector C2. Does the backup lamp light?  | --  | Go to Step 5  | Go to Step 7  | 
4  | Repair the open in CKT 139 (PNK) between the instrument panel fuse block and the park/neutral position and backup lamp switch (including TURN-B/U Fuse). Is the repair complete?  | --  | Go to Step 9  | --  | 
5  | Inspect the adjustment of the park/neutral position and backup lamp switch. Is the adjustment proper?  | --  | Go to Step 6  | Go to Step 8  | 
6  | Replace the park/neutral position and backup lamp switch. Refer to Park/Neutral Position Switch Replacement in Transmission. Is the replacement complete?  | --  | Go to Step 9  | --  | 
7  | Repair the open in CKT 24 (LT GRN) between the park/neutral position and backup lamp switch and splice S321. Is the repair complete?  | --  | Go to Step 9  | --  | 
8  | Adjust the park/neutral position and the backup lamp switch. Refer to Park/Neutral Position Switch Adjustment . 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  | 
Step  | Action  | Value(s)  | Yes  | No  | ||||
|---|---|---|---|---|---|---|---|---|
| 
 Important: Inspect for inoperative bulbs before beginning diagnostic procedure.  | ||||||||
1  | Did you perform the Lighting Diagnostic System Check?  | --  | Go to Step 2  | |||||
2  | Inspect for inoperative TURN-B/U fuse #16 at I/P fuse block. Is the fuse fucntional?  | --  | Go to Step 4  | Go to Step 3  | ||||
3  | Replace the inoperative fuse. Is the repair complete?  | --  | Go to Step 10  | --  | ||||
4  | 
 Is B+ (battery voltage) present?  | --  | Go to Step 6  | Go to Step 5  | ||||
5  | Locate and repair OPEN in CKT 139 (PNK) between park/neutral switch and I/P fuse block. Is the repair complete?  | --  | Go to Step 10  | --  | ||||
6  | Connect DMM to cavity F connector C2 of the park/neutral switch to ground Is B+ (battery voltage) present?  | --  | Go to Step 9  | Go to Step 7  | ||||
7  | Adjust the park/neutral switch if needed Park/Neutral Position Switch Adjustment Did the park/neutral switch require adjustment?  | --  | Go to Step 10  | 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 10  | --  | ||||
9  | Locate and repair one of following faults: 
 
 Is the repair complete?  | --  | Go to Step 10  | --  | ||||
10  | Operate the system in order verify the repair. Did you correct the condition?  | --  | System OK  | Go to Step 2  | ||||