Main Relay (Computer/Fuel System): Testing and Inspection

EFI MAIN RELAY INSPECTION

2. INSPECT EFI MAIN RELAY (NIPPONDENSO)
A. Inspect relay continuity
- Using an ohmmeter, check that there is continuity between terminals 1 and 2.
- If there is no continuity, replace the relay.
- Check that there is no continuity between terminals 3 and 5.
- If there is continuity, replace the relay.

B. Inspect relay operation
- Apply battery voltage across terminals 1 and 2.
- Using an ohmmeter, check that there is continuity between terminals 3 and 5.
- If there is no continuity, replace the relay.

3. INSPECT EFI MAIN RELAY (BOSCH)
A. Inspect relay continuity
- Using an ohmmeter, check that there is continuity between terminals 86 and 85.
- If there is no continuity, replace the relay.
- Check that there is no continuity between terminals 30 and 87.
- If there is continuity, replace the relay.

B. Inspect relay operation
- Apply battery voltage across terminals 86 and 85.
- Using an ohmmeter, check that there is continuity between terminals 30 and 87.
- If there is no continuity, replace the relay.
4. REINSTALL EFI MAIN RELAY