Measuring Continuity....??? |
Measuring Continuity....??? |
Sep 13, 2013 - 4:14 PM |
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Enthusiast Joined Oct 25, '12 From Pennsylvania Currently Offline Reputation: 0 (0%) |
Okay.... I recently tested a relay for continuity, and two terminals caused my meter to beep, and the other two terminals caused my meter to read .064 without beeping. I came across a car forum question, in which the poster was using a 4 pin toyota relay on his hot rod, and was testing continuity. This was the same normally closed relay I was testing, and he got the same results. One person said the .064 was continuity for Toyota relays. I'm not an electronics wizard, so if anyone has any knowledge here, that'd be great. I broke a relay case yesterday tugging it out, and picked up a new relay this morning. It's supposed to have continuity across two pins and no continuity across the other two (fan relay no. 2) without power. Both the new and old relay read .061 ohms across the pins that are supposed to have continuity, so I'm guessing that's continuity without the beep.
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Sep 14, 2013 - 10:43 AM |
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Enthusiast Joined Oct 25, '12 From Pennsylvania Currently Offline Reputation: 0 (0%) |
Thinking...... this is a normally closed relay, and when energized, the switch opens breaking continuity between 87 and 30. Shouldn't I be getting 12 volts to the relay when the engine is cold? It would seem that 12 volts at the relay when cold would open the circuit, and cause the fans not to run. That doesn't account for the fans running without a relay at all, however.
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