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

Normally-open type A:




Check for continuity between the terminals.
- There should be continuity between the No.1 and No.2 terminals when power and ground are connected to the No.3 and No.4 terminals.
- There should be no continuity between the No.1 and No.2 terminals when power is disconnected.

PGM-FI Main Relay 1, 2:

PGM-FI Main Relay 1
PGM-FI Main Relay 2



Five-terminal type:




Check for continuity between the terminals.
- There should be continuity between the No.1 and No.2 terminals when power and ground are connected to the No.3 and No.4 terminals.
- There should be no continuity between the No.1 and No.4 terminals when power is disconnected.

PGM-FI Main Relay 2:

PGM-FI Main Relay 2