For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you review the HVAC Blower Controls Circuit Description and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - HVAC Systems - Manual
2 | Operate the blower motor at each speed. Does the blower motor run continuously? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
3 | Disconnect the blower speed switch connector. Does the blower motor stop? | Go to Step 4 | Go to Step 5
4 | Replace the blower speed switch. Refer to Blower Switch Replacement . Is the repair complete? | Go to Step 8 | --
5 | Disconnect the blower motor resistor connector. Does the blower motor stop? | Go to Step 6 | Go to Step 7
6 | Repair the short to ground in the PNK/BLK, the PNK/BLU or the PNK/GRN wire between the blower speed switch and the blower motor resistor. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 8 | --
7 | Repair the short to ground in the PNK wire between the blower speed switch, the blower motor resistor and the blower motor. 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