Jump A Relay?

"Taema" (taema) 01/10/2020 at 20:07 • Filed to: None

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So my wife’s old Kia had the blower motor stop working recently. It was intermittent and then died. I can’t hear or feel the relay doing anything when turning the blower on at any power level. So I’m guessing the relay is shot.

So can I just bridge the contacts in the relay block to make sure it's not the blower motor or switch?

MM54 > Taema 01/10/2020 at 20:12

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Yes. Find the correct pins (C and NO most likely) in the base and jump them with appropriately sized stub of wire (or a paperclip and burn your fingers)

tpw_rules > Taema 01/10/2020 at 20:15

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Yeah it’s possible as already described. Bear in mind that the relay might have fried because the motor is worn out and consuming too much current. If it burns out the fuse next, it’s time for a new motor.

Taema > MM54 01/10/2020 at 20:17

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Word. There's a picture of a coil on one side and the switch on the other. I'm guessing the coil is the relay side.

Taema > tpw_rules 01/10/2020 at 20:19

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That's good info. I did check the fuse first and it's fine so far.

Future Heap Owner > Taema 01/10/2020 at 20:21

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The coil is the signal side and the switch is the side you need to bridge (that’s what’s normally open but then gets closed when the coil has a current driven through it).

Taema > Future Heap Owner 01/10/2020 at 20:24

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That's what I thought! Good to get a sanity check.

pip bip - choose Corrour > Taema 01/10/2020 at 20:26

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any other relays in the car you can swap around?

Taema > pip bip - choose Corrour 01/10/2020 at 20:27

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Good call. I don't know. I would have just bought one, but it was an order situation. I'll check in the morning.