Control Switch/Timer Relay
NOTE:
The control switch/timer relay is located on instrument cluster trim on Continental, Escort, Lynx, Mark VII, and Mustang. Control switch/timer relay is mounted to climate control head on all other models.
- Ground pin No. 2 (G) and connect a jumper wire between pins No. 3 (I) and 4 (B). Connect a 12-volt test light between pin No. 1 (L) and ground. On Continental, Cougar, Mark VII, and Thunderbird apply power to pin No. 4 (B). Test light should not glow. Apply power to pin S. The heated rear window symbol should light. On all other models, apply power to pin No. 4 (B). Test light should not glow.
- On all models, turn control switch to "ON" position. Test light should come on and stay on after switch returns to normal position. Test light should go off if control switch is turned to "OFF" position, jumper wire between pins No. 3 (I) and 4 (B) is removed, power to ignition switch "ACC" terminal is removed (Tempo and Topaz only), or 10 minutes have elapsed.