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View Full Version : How to test relays for toyota 4 runner 1990


aguilareal
Dec 15, 2010, 04:16 PM

CaptainRich
Dec 16, 2010, 05:00 AM
What system are you having problems with?
Simple relay tests require a non-powered test light and/or a DVOM, some jumper wires and a little knowledge of DC circuits.
Many relays have power only during certain conditions.
What symptoms are you having?