Tercel Sedan 2-Door L4-1456cc 1.5L SOHC (3E-E) (1991)
EFI Main Relay: Testing and Inspection
1. Unplug the EFI Main Relay from the fuse panel.
2. Using an Ohmmeter, check for continuity between terminals 1 and 3.
Testing EFI Relay
3. Check that there is NO continuity between terminals 2 and 4 or terminals 3 and 4.
4. If not as specified, replace the EFI Main Relay.
5. Apply battery current across terminals 1 and 3.
Testing EFI Relay Operation - Current Applied
6. Using an Ohmmeter, check for continuity between terminals 2 and 4.
7. If operation is not as specified, replace the EFI Main Relay.
8. Remove the battery leads and reinstall the relay.
NOTE: Refer to COMPUTERIZED ENGINE CONTROLS for circuit test of the EFI Main Relay.