Operation CHARM: Car repair manuals for everyone.

Blower Motor Relay: Testing and Inspection

Relays - Test:




There should be continuity between the A and C terminals when power and ground are connected to the B and D terminals, and there should be no continuity when power is disconnected.

Radiator Fan Relay:




- Blower motor relay


Normally-open type A:




1. Check for continuity between the terminals.
- There should be continuity between the No. 1 and No. 3 terminals when power and ground are connected to the No. 2 and No. 4 terminals.
- There should be no continuity between the No. 1 and No. 3 terminals when power is disconnected.

Radiator Fan Relay/Power Window Relay/Blower Motor Relay:




- Blower motor relay