Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open. | ||||
1 |
Does the test lamp light? | -- | Go to Step 2 | Go to Step 3 |
2 | Connect a fused jumper between the B terminal and the F terminal of connector C1 of the park/neutral position switch. Do the backup lamps light? | -- | Go to Step 4 | Go to Step 5 |
3 | Backprobe the underhood junction block connector C1 with a test lamp between terminal F5 and ground. Does the test lamp light? | -- | Go to Step 6 | Go to Step 7 |
4 |
Is the repair complete? | -- | Go to Backup Lamp System Check | -- |
5 |
Does the test lamp light? | -- | Go to Step 8 | Go to Step 9 |
6 | Repair the open in CKT 539 between the underhood junction block and the park/neutral position switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Backup Lamp System Check | -- |
7 | Replace the underhood junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems Is the repair complete? | -- | Go to Backup Lamp System Check | -- |
8 | Backprobe the right IP junction block C3 connector at the C2 terminal and at the B2 terminal. Does the test lamp light at both terminals? | -- | Go to Step 10 | |
9 | Repair the open in CKT 24 between the park/neutral position switch and the right IP junction block. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Backup Lamp System Check | -- |
10 | Replace the right IP junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems. Is the repair complete? | -- | Go to Backup Lamp System Check | -- |
