Transmission Control System Relay: Testing and Inspection

A/T Relay Inspection
1. Disconnect negative cable at battery.
2. Remove A/T relay (1), from fuse box.
3. Check that there is no continuity between terminal "c" and "d". If there is continuity, replace relay.
4. Connect battery positive (+) terminal to terminal "b" of relay. Connect battery negative (-) terminal to terminal "a" of relay. Check for continuity between terminal "c" and "d". If there is no continuity when relay is connected to the battery, replace relay.