Heater Main Relay

Heater Relay Testing:

CONTINUITY

1. Check that there is continuity between terminals 1 and 3 and between terminals 2 and 4.
2. Check that there is no continuity between terminals 4 and 5.
3. If continuity is not as specified, replace relay.

OPERATION

1. Apply battery voltage across terminals 1 and 3.
2. Check that there is continuity between terminals 4 and 5.
3. Check that there is no continuity between terminals 2 and 4.
4. If operation is not as specified, replace relay.