Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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Power Window Relay: Testing and Inspection

Normally Open Type

Power Relays-Relay Test:




1. 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.

Power Window/Radiator Fan/Blower Motor Relay:




^ Power window relay