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 - 11:16 AM |
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Enthusiast Joined Oct 29, '11 From Haltom City, Texas Currently Offline Reputation: 1 (100%) |
No the relays are naturally open circuited, with no continuity at all
When power is applied across 85 and 86 the relay closes and sends power. This way, the relays always have direct power from the battery (30) and only come on when the ecu sends a 12v signal to terminal 86 If the fans are still running when you pull out the fan relay there are 2 possibilities I can think of- -You are pulling the wrong relay, my 94 GT has 3 fan relays, two in a small relay box near the top passengerside of the radiator and just behind the highbeam (the radiator fans I think) or a single relay in the main fuse/relay box along the driverside fender(this is for the climate control blower motor) - Or you have a direct short circuit between the radiator fans and some ignition wire. |
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