# Dead GEM '05

**URL:** <https://community.electricforum.com/t/dead-gem-05/2290>\
**Category:** GEM Forum\
**Created:** [April 4, 2012, 12:58pm UTC](https://community.electricforum.com/t/dead-gem-05/2290 "2012-04-04T12:58:17Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![crack\_monkey](https://avatars.discourse-cdn.com/v4/letter/c/7cd45c/32.png) [@crack\_monkey](https://community.electricforum.com/u/crack_monkey)\
**Post date:** [April 4, 2012, 12:58pm UTC](https://community.electricforum.com/t/dead-gem-05/2290/1 "2012-04-04T12:58:17Z")

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I’m running out of ideas of what the problem is… i hope somebody can help me.

here are the details of the car:  
2005 GEM E4  
Has not operated in the last 2 years. (my boss has me trying to fix it)  
Replaced the batteries, pack voltage shows over 72+volts  
Controller was just rebuilt a few weeks ago  
the battery charger flashes that it does not see the batteries  
on the dc/dc converter- it shows power of 72+ volts the enable voltage pin shows 0volts  
lights, flashers, display have no power/ do not light up  
Fuses on the PSDM are all good (i took it out of the car and removed the cover to look at the condition… it looks fine… nothing obviously wrong)  
the magnet behind the dash (i believe that is for the contactor??) gets no power from the controller  
car rolls freely  
when you let the parking brake off you get the beeeeeeeeeeep

Any ideas of what i should do now (besides burn it)  
any other information i may have forgotten to give that would help

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**Author:** ![Gem\_e2](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gem_e2/32/1849_2.png) [@Gem\_e2](https://community.electricforum.com/u/Gem_e2)\
**Post date:** [April 5, 2012, 10:00am UTC](https://community.electricforum.com/t/dead-gem-05/2290/2 "2012-04-05T10:00:30Z")

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Hi

the main switch on psdm under fuses are ON ?

try if you have 12volt on positiv spade number 6 on psdm and negativ to chassies

display works or black ?

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**Author:** ![crack\_monkey](https://avatars.discourse-cdn.com/v4/letter/c/7cd45c/32.png) [@crack\_monkey](https://community.electricforum.com/u/crack_monkey)\
**Post date:** [April 5, 2012, 7:06pm UTC](https://community.electricforum.com/t/dead-gem-05/2290/3 "2012-04-05T19:06:02Z")

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yes main switch is on and voltage shows going through it.

display is black

th spade you are talking about… Is is that the 8 (I think) vertical spaces on the left half of the psdm?. I have not checked that. I can check that tomorrow.

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**Author:** ![Gem\_e2](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gem_e2/32/1849_2.png) [@Gem\_e2](https://community.electricforum.com/u/Gem_e2)\
**Post date:** [April 8, 2012, 2:51am UTC](https://community.electricforum.com/t/dead-gem-05/2290/4 "2012-04-08T02:51:17Z")

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hi

yes number 6  
i think 7 and 8 are called A and B they are 72volt

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**Author:** ![Gem\_e2](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gem_e2/32/1849_2.png) [@Gem\_e2](https://community.electricforum.com/u/Gem_e2)\
**Post date:** [April 8, 2012, 3:00am UTC](https://community.electricforum.com/t/dead-gem-05/2290/5 "2012-04-08T03:00:02Z")

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the charger not see battery pack ?  
you must have 72volt to charger  
if not,the charger interlock signal to psdm will not work

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**Author:** ![crack\_monkey](https://avatars.discourse-cdn.com/v4/letter/c/7cd45c/32.png) [@crack\_monkey](https://community.electricforum.com/u/crack_monkey)\
**Post date:** [April 18, 2012, 6:41am UTC](https://community.electricforum.com/t/dead-gem-05/2290/6 "2012-04-18T06:41:07Z")

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I finally got a chance to get out and check the pins. I was getting no voltage from 6,7, or 8. I was grounding to the the chassis

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**Author:** ![Gem\_e2](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gem_e2/32/1849_2.png) [@Gem\_e2](https://community.electricforum.com/u/Gem_e2)\
**Post date:** [April 18, 2012, 9:33am UTC](https://community.electricforum.com/t/dead-gem-05/2290/7 "2012-04-18T09:33:56Z")

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ok, you can only read positive pin 6 to chassie ground

on positive pin A and B you have to read ground in 72v negativ on psdm

do you have 72v on the big + and - cables on psdm from battery pack ?

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**Author:** ![surviveone](https://avatars.discourse-cdn.com/v4/letter/s/3be4f8/32.png) [@surviveone](https://community.electricforum.com/u/surviveone)\
**Post date:** [September 5, 2013, 10:25pm UTC](https://community.electricforum.com/t/dead-gem-05/2290/8 "2013-09-05T22:25:46Z")

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Im having same issue. Woke up, turned key, dash turned on and then turned off…no 72 v of power anywhere…checked all connections…its a 2005 e4 w/ less than 200 miles,what could be causing the power outage?

btw, all the batteries are fully charged…

[quote=Gem e2;11515]ok, you can only read positive pin 6 to chassie ground

on positive pin A and B you have to read ground in 72v negativ on psdm

do you have 72v on the big + and - cables on psdm from battery pack ?[/quote]

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**Author:** ![Ironpumper](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/ironpumper/32/6705_2.png) [@Ironpumper](https://community.electricforum.com/u/Ironpumper)\
**Post date:** [June 19, 2020, 12:28am UTC](https://community.electricforum.com/t/dead-gem-05/2290/9 "2020-06-19T00:28:39Z")

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Hello my friend. Sounds like emergency brake momentary switch is wired wrong. You should get a long beeper with ignition off. When you release the brake the beeps should stop. Check your wiring there because the contactor will not engage with the ebrake on
