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E85 Hard top rear heater question

2003 - 2009, roadster, coupe, facelift
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aqua0
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E85 Hard top rear heater question

Post by aqua0 » Tue May 21, 2024 3:43 pm

Quick question - how do I test the heater element works before I put it on the car?
I have a multimeter, but unless you give me step by step idiots guide, I don’t know what I’m doing with it! :?
Never go deeper than the bottom :P
Facelift 3.0Si Roadster :thumbsup:
Previous was a 2.0i Sport

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Usel
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E85 Hard top rear heater question

Post by Usel » Wed May 22, 2024 9:12 am

Whilst I haven't tested one I imagine there are 2 wires you connect to the car to make it work.

The heater element is just a circuit going round which is fed 12v to make it it heat up.

So a simple continuity test to make sure the circuit is complete is all that's needed.

Put your multimeter in this setting:
20230828_114938.jpg
20230828_114938.jpg (107.52 KiB) Viewed 160 times
When it reads 1 that means there is no circuit continuity and the heater element will not work.

Touch the 2 prongs together and it should read 0:
20230828_114952.jpg
20230828_114952.jpg (89.9 KiB) Viewed 160 times
So now put a prong on one wire and the other prong on the other wire. Doesn't matter which way round. You want a reading of 0 or anything thing below 010.

Any higher than that and there is resistance on the circuit, either a break or close to a break in the element.

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aqua0
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E85 Hard top rear heater question

Post by aqua0 » Wed May 22, 2024 12:15 pm

thank you so much for this Usel - really appreciated :thumbsup:
Never go deeper than the bottom :P
Facelift 3.0Si Roadster :thumbsup:
Previous was a 2.0i Sport

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