For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform the Heater Blower Controls System Check? | Go to Step 2 | Go to HVAC System Check
2 | Test for an open in the BLK/WHT wire between the blower speed selector switch and S200. Is an open found? | Go to Step 4 | Go to Step 3
3 | Replace the blower speed selector switch. Refer to Blower Switch Replacement . Is the repair complete? | Go to HVAC System Check | --
4 | Repair the open. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to HVAC System Check | --