Celica 2WD L4-2.0L (3S-FE) (1988)
1. Check that there is continuity between terminals 5 and 6
2. Check that there is "NO" continuity between terminals 1 and 3.
3. If continuity is not as specified, replace relay.
Blower Speed Control Relay "C" Testing
Relay "C" Operation
1. Apply battery voltage accross terminals 5 and 6.
2. Check that there is continuity between terminals 1 and 3.
3. If operation is not as specified, replace relay.