For 1990-2009 cars

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 |

1. Remove the scan tool from the data link connector (DLC).
2. Connect a J 35616-200 test lamp between the DLC, cavity 16, and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 2

2 | Repair the open in CKT 1440 (ORN) between the LH IP Junction Block and the DLC, cavity 16. Is the scan tool operative? | -- | System OK | Go to Step 3
3 | Connect an unpowered test lamp between cavity 5 and cavity 16 of the DLC. Does the test lamp light? | -- | Go to Step 5 | Go to Step 4
4 | Repair the open in CKT 451 (BLK/WHT) between the DLC, cavity 5, and ground G102. Is the scan tool operative? | -- | System OK | Go to Step 5
5 | Connect an unpowered test lamp between cavity 4 and cavity 16 of the DLC. Does the test lamp light? | -- | Go to Step 6 | Go to Step 7
6 | The scan tool may be inoperative. Obtain a new scan tool. Is the scan tool operative? | -- | System OK | --
7 | Repair the open in CKT 150 (BLK) between the DLC, cavity 4, and ground G201. Is the scan tool operative? | -- | System OK | --