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

Power Relay Test

Use this chart to identify the type of relay then do the test listed for it.

NOTE: for the turn signal/hazard relay input test.




Normally-open 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.2 terminals when power is disconnected.




Five-terminal type B

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.5 terminals.
- There should be continuity between the No.1 and No.4 terminals when power is disconnected.