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

MFI RELAY (ASD RELAY) AND FUEL PUMP RELAY CHECK
1. Remove the relay.




2. Check that there is continuity between (4) and (6) terminals.

Standard value: 35 - 75 (Ohms)







3. Use jumper leads to connect relay terminal No.6 to the battery (+) terminal and terminal No. 4 to the battery (-) terminal.
Check the continuity between relay terminal No.2 - 8 while connecting and disconnecting the jumper lead at the battery (-) terminal.

4. If there is a defect, replace the MFI (ASD) relay or fuel pump relay.