Automatic Temperature Control

1. Disconnect electrical connector to switch.
2. Operate switch in all control positions and check continuity between switch terminals using suitable ohmmeter.

NOTE: Refer to "Wiring Diagram" for switch terminal identification.

Fig. 17 Blower Switch Continuity Test:

3. Meter should indicate continuity between terminals as indicated in charts.
4. If continuity does not exist between indicated terminals, switch is open. If meter indicates continuity between terminals other than those indicated for each switch position, switch is shorted.