Component Test

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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 ECU POWER SUPPLY for circuit test of the EFI Main Relay.
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