# \-04 replaced micro switch and still have error code
**URL:** https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353
**Category:** Technical Discussions
**Created:** [May 9, 2017, 1:05am UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353 "2017-05-09T01:05:32Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 9, 2017, 1:05am UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/1 "2017-05-09T01:05:32Z")
I replaced my micro switch on my gem car and I still receive an error code -04 how do I fix this?
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 9, 2017, 11:33am UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/2 "2017-05-09T11:33:56Z")
It’s an 02 e825 e4. Please help would love to get this running!!!
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 9, 2017, 1:33pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/3 "2017-05-09T13:33:01Z")
Should be 4.5 volts across switch when off. Zero when switch is on.
Pin 13 on controller. Other wire is B-.
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 9, 2017, 1:35pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/4 "2017-05-09T13:35:34Z")
Ok I’ll check that. What else could it be? D.C. To D.C. Converter or no?
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 9, 2017, 1:36pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/5 "2017-05-09T13:36:59Z")
What’s b- wire mean?
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 9, 2017, 3:24pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/6 "2017-05-09T15:24:37Z")
Battery negative.
One wire connects to B- the other pin 13 of controller.
Switch, wires, or controller.
Switch may be mis-aligned or wired wrong.
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 9, 2017, 4:58pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/7 "2017-05-09T16:58:45Z")
Ok thank you! How would someone align the park break? I have green wire on top green and white in the middle and green and yellow on bottom for reference the wiring of the micro switch. And what can I do with the 13th pin if the pin is the issue? How would I know if the controller is bad? Sorry for all the questions I’m quite new to gem cars and closest dealer is 4hrs away.
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 9, 2017, 5:52pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/8 "2017-05-09T17:52:38Z")
The green white is from p13. The green should be B-.
Don’t remember what GY is. beeper maybe.
If you have voltage from G to GW connect them together to simulate the brake switch connecting them.
That should clear error code.
If you don’t have voltage at controller p13. Controller is bad. Unlikely.
> [@Brake wire connection](https://community.electricforum.com/t/brake-wire-connection/12183):
>
> Greetings I am a new member and have purchased a 99 e580. When I bought it the wires going to the switch on the emergency brake handle were disconnected. I would appreciate your help with the positioning of the 3 wires (which wire goes to which terminal on the switch) Roy (rjr) List item
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 9, 2017, 6:07pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/9 "2017-05-09T18:07:39Z")
Perfect I will let you know tonight! Thanks for everything!
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 10, 2017, 3:50am UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/10 "2017-05-10T03:50:08Z")
I’m getting 6.2 volts on the switch but still no dice -04 code what way can you tell if the controller is bad?
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 10, 2017, 3:58am UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/11 "2017-05-10T03:58:01Z")
Green top green white middle green yellow bottom
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 10, 2017, 4:22am UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/12 "2017-05-10T04:22:08Z")
Measure from a known B-. Battery or controller. Black meter lead to B-. Red to green white.
Connect the green wire to green white( 6.2 volts).
Volts should go near zero.
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 10, 2017, 12:37pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/13 "2017-05-10T12:37:57Z")
Yes it went from 0 volts to 6.2 volt connected but still did not clear the error code. Bad controller you think?
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 10, 2017, 2:49pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/14 "2017-05-10T14:49:26Z")
Re-seat the 23p connector on controller.
Check voltage at pin 13. From B- at control to pin 13.
Or while 23p unplugged check for zero ohms on lowest scale from p13 W/G at controller to W/G wire at switch.
Bad controller still seems unlikely.
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 10, 2017, 7:32pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/15 "2017-05-10T19:32:59Z")
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 10, 2017, 9:03pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/16 "2017-05-10T21:03:43Z")
Ok kinda of confused but it sound like you know what your talking about. It does have voltage at p13 6.4v this error code is driving me nuts!
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 10, 2017, 9:08pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/17 "2017-05-10T21:08:09Z")
And is the charger suppose to beep while charging?
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 10, 2017, 10:35pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/18 "2017-05-10T22:35:34Z")
I don’t know what you have for a charger.
Pin 13 goes to zero volts with the brake switch to clear error code.
So you must have zero volts to drive.
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### Author:  [@Samson](https://community.electricforum.com/u/Samson)
#### Post date: [May 11, 2017, 7:40pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/19 "2017-05-11T19:40:04Z")
OK now I have 4.5 V with parking brake on and 1.3 V with parking brake off
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [May 11, 2017, 8:03pm UTC](https://community.electricforum.com/t/04-replaced-micro-switch-and-still-have-error-code/12353/20 "2017-05-11T20:03:54Z")
That should be ok if measured at controller. Below 2.5 volts. I would not trust it though.
Jump from B- to P13 at controller to make sure P13 is at zero volts.
Not easy to do. May have to expose P13 wire or poke a sharp pin through insulation.
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