EFI Main Relay
NOTE:
For more information, refer to ECU POWER SOURCE CIRCUIT diagnostic chart at end of article.
- EFI main relay is located in engine compartment. Using an ohmmeter, check for continuity between relay terminals No. 1 and 3. Ensure continuity is not present between terminals No. 2 and 4. If continuity is not as specified, replace relay. See Fig 1.
- Apply battery voltage between relay terminals No. 1 and 3. Using an ohmmeter, check for continuity between terminals No. 2 and 4. If continuity is not present, replace relay.