For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Exterior Lights Schematics
1 | Did you review the Exterior Lighting Systems Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Lighting Systems
2 | Verify that the stoplamps are always illuminated. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 | Disconnect the stoplamp switch. Do the stoplamps remain illuminated? | Go to Step 5 | Go to Step 4
4 | Replace the stoplamp switch. Refer to Stop Lamp Switch Replacement in Hydraulic brakes. Is the repair complete? | Go to Step 8 | --
5 | Disconnect C205. Do the stoplamps remain illuminated? | Go to Step 7 | Go to Step 6
6 | Repair the short to voltage in the tail lamp supply voltage circuit between the stoplamp switch and C205. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 8 | --
7 | Repair the short to voltage in the tail lamp supply voltage circuit between the C205 and S304. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 8 | --
8 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3