Component Tests and General Diagnostics

Relays - Power Relay Test:

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 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.










Normally-open type B

Check for continuity between the terminals.

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




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