For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Were you sent here from the Exterior Lights System Check? | -- | Go to Step 2 | Go to Exterior Lights System Check
2 |

1. Turn the ignition switch to the ON position.
2. Place the headlamp switch in the ON position.
3. Use a test lamp to backprobe junction block 2, C3 cavity 9 to ground.

Does the test lamp illuminate?

--

Go to Step 3

Go to Step 4

3 | Use a J 35616-200 to backprobe junction block 1, C6 cavity 9 to ground. Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 6
4 | Connect a J 36169-A between cavity 3 of the TAIL relay and ground. Do the park and tail lamps illuminate? | -- | Go to Step 8 | Go to Step 7
5 | Repair the open in the GRN wire between the junction block 1, C6 cavity 9 and the junction block 2, C3 cavity 9. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Exterior Lights System Check | --
6 | Replace junction block 1. Is the replacement complete? | -- | Go to Exterior Lights System Check | --
7 | Replace the TAIL Relay. Is the replacement complete? | -- | Go to Exterior Lights System Check | --
8 | Test for continuity between cavity 6 of connector C3 of junction block 2 and cavity 16 of the DRL control module connector using a J 39200 . Is there continuity in the LT GRN wire? | -- | Go to Step 9 | Go to Step 10
9 | Test for continuity between cavity 14 of the turn/signal/headlamp switch connector and cavity 17 of the DRL control module connector using a J 39200 . Is there continuity in the LT GRN/BLK wire? | -- | Go to Step 12 | Go to Step 11
10 | Repair the open in the LT GRN wire between cavity 6 of connector C3 of junction block 2 and cavity 16 of the DRL control module connector . Refer to Wiring Repairs in Wiring Systems. Is the replacement complete? | -- | Go to Exterior Lights System Check | --
11 | Repair the open in the LT GRN/BLK wire between cavity 17 of the DRL control module connector and cavity 14 of the turn signal/headlamp switch. Refer to Wiring Repairs in Wiring Systems. Is the replacement complete? | -- | Go to Exterior Lights System Check | --
12 | Replace the DRL module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Is the replacement complete? | -- | Go to Exterior Lights System Check | --