EFE Relay: Testing and Inspection

Fig. 11 PTC Heater Relay.:

Fig. 10 PTC Heater Relay Terminals.:

1. Apply battery power (12V), positive to terminal 1 and negative to terminal 2 Fig. 10.

Fig. 12 PTC Continuity Chart.:

1. Confirm that there is continuity at terminals 3 and 4 by using an ohmmeter Fig. 12.