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Electric Club Car Electric DS, and Precedent golf cars |
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01-21-2019, 01:16 PM | #1 |
Not Yet Wild
Join Date: Jan 2019
Posts: 8
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new speed sensor, mcor.. still in limp mode! What next?
2009 48V Club Car Carryall DS 6v x 8 batteries. The cart is in limp mode, I've done my best to search through old posts. The batteries are fully charged and in good shape. Occasionally it will come back to full speed, but only if you depress the pedal slowly. If you accelerate too fast it will beep and slow down. I've done the speed sensor test(pushing it while in fwd) which it responded correctly. I went ahead and replaced the speed sensor/magnet anyways. No change. Replaced the mcor. No change. I'm frustrated and at a loss. What's the next step? Any advice appreciated.
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01-21-2019, 02:27 PM | #2 |
Not Yet Wild
Join Date: Jan 2019
Posts: 8
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Re: new speed sensor, mcor.. still in limp mode! What next?
Update:
I read somewhere it could be caused by terminals, so I took a drill and wire brush and cleaned every terminal. I can't tell that it helped. Current situation: Full power only if you depress pedal slowly. If you accelerate too fast, or at other random times during full speed, it beeps 3 times slows the vehicle to a stop and becomes unresponsive unit I reset the OBC. |
01-21-2019, 02:40 PM | #3 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: new speed sensor, mcor.. still in limp mode! What next?
What You described is a "High Speed Walkaway" error.
It is caused by either the Key switch or the FNR switch. Disconnect and Jump the FNR Orange (middle) and Brown (FWD) wires together on the back of the FNR as this will force forward direction. If the problem persists, make sure all wires are good on the back of the key switch. |
01-21-2019, 03:04 PM | #4 |
Not Yet Wild
Join Date: Jan 2019
Posts: 8
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Re: new speed sensor, mcor.. still in limp mode! What next?
Update:
Full acceleration causes it to stop and become unresponsive, but simply switching to tow and back to run turns it back on. |
01-21-2019, 03:06 PM | #5 | |
Not Yet Wild
Join Date: Jan 2019
Posts: 8
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Re: new speed sensor, mcor.. still in limp mode! What next?
Quote:
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01-21-2019, 05:57 PM | #6 |
Gone Wild
Join Date: Apr 2017
Location: SE TN
Posts: 2,217
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Re: new speed sensor, mcor.. still in limp mode! What next?
Check and see if the precharge resistor is getting hot.
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01-22-2019, 09:46 AM | #7 |
Not Yet Wild
Join Date: Jan 2019
Posts: 8
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Re: new speed sensor, mcor.. still in limp mode! What next?
I now have both the key switch jumped and the F/R jumped with the same results. I've looked up what the precharge resistor looks like, but I can't find the location. thanks for the help!
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01-22-2019, 09:56 AM | #8 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
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Re: new speed sensor, mcor.. still in limp mode! What next?
The precharge resistor is mounted between the 2 large posts on the solenoid
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01-22-2019, 10:14 AM | #9 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: new speed sensor, mcor.. still in limp mode! What next?
Are You sure You have to cycle the Tow/Run switch for it to work again?
It could also be a main dropout since the 2009 DS model still has a diode in line with the harness (it was not incorporated inside the Controller until the 2011 model). You can test for the presence of the diode between the tow/run switch and Controller pin #9. You need to disconnect the battery, unplug the 16-pin connector from the controller and unplug the 2-pin connector from the tow/run switch. Place your meter in the "diode test" mode and check between the light-green wire at the Tow/Run switch and controller pin #9. If you cannot detect a diode there, you will need a "main dropout harness" to be installed by the tow/run switch. |
01-22-2019, 01:20 PM | #10 |
Not Yet Wild
Join Date: Jan 2019
Posts: 8
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Re: new speed sensor, mcor.. still in limp mode! What next?
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