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 operate at high speed? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 |

1. Ignition switch ON.
2. Blower speed switch OFF.
3. Test for voltage at cavity 2 of the blower speed switch connector.

Is voltage present?

Go to Step 5

Go to Step 4

4 | Repair the open in the PNK wire between the blower speed switch and S204 (in the harness about 15 centimeters (6 inches) from the blower motor resistor connector). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 6 | --
5 | Replace the blower speed switch. Refer to Blower Switch Replacement . Is the repair complete? | Go to Step 6 | --
6 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3