Blower Motor Relay: Service and Repair

INSPECTION

Check for continuity between the terminals.
1. There should be continuity between No1 and No.4 terminals when power and ground are connected to No.2 and No.3 terminals.
2. There should be no continuity between No.1 and No.4 terminals when power is disconnected.




3. If the blower motor voltage is not operated well, substitute with a known-good blower relay and check for proper operation.
4. If the problem is corrected, replace the blower relay.

REPLACEMENT

1. Disconnect the negative (-) battery terminal.
2. Disconnect the connector of the blower relay at the below blower unit.
3. Remove the blower relay (A) after loosening the mounting screw.




4. Install in the reverse order of removal.