Heater Core Case: Testing and Inspection
Heater Relay / Test
There should be continuity between the 1 and 3 terminals when power and ground are connected to the 2 and 4 terminals, and there should be no continuity when power is disconnected.
There should be continuity between the 1 and 3 terminals when power and ground are connected to the 2 and 4 terminals, and there should be no continuity when power is disconnected.