For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Exterior Lights Schematics
1 | Did you review the Lighting System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Lighting Systems
2 | Verify that the park lamps are always on. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 | Is vehicle equipped with Remote Keyless Entry? | Go to Step 4 | Go to Step 7
4 | Disconnect the remote control door lock receiver connector. Do the lamps stop illuminating? | Go to Step 6 | Go to Step 5
5 | Test the LT GRN/BLK wire between junction block 2, the remote control door lock receiver, and the daytime running lamps (DRL) control module for a short to ground. Is the wire shorted to ground? | Go to Step 8 | Go to Step 7
6 | Replace the remote control door lock receiver. Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry. Is the repair complete? | Go to Step 12 | --
7 | Test the LT GRN/BLK wire between the daytime running lamps (DRL) control module and the turn signal/headlamp switch for a short to ground. Is the wire shorted to ground? | Go to Step 8 | Go to Step 9
8 | Repair the wire. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 12 | --
9 | Disconnect the turn signal/headlamp switch connector. Do the lamps stop illuminating? | Go to Step 10 | Go to Step 11
10 | Replace the turn signal/headlamp switch. Refer to Headlamp Switch Replacement . Is the replacement complete? | Go to Step 12 | --
11 | Replace the daytime running lamps control module. Refer to Daytime Running Lights (DRL) Control Module Replacement . Is the repair complete? | Go to Step 12 | --
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3