Power Relay Test

Power Relay Test




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

NOTE: See Turn Signal/Hazard Relay 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:

Rear Window Defogger Relay:

Rear Blower Motor Relay:

Blower Motor Relay, Type 1,2,3:

Check for continuity between the terminals.
- There should be continuity between the No.1 and No.3 terminals when power end 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.