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Unread 07-05-2013, 12:02 PM   #1
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Default 05 CC DS 48V IQ clicks but will not go

2005 DS 48v IQ. Serial# AQ0544. Curtis 1510A controller. I believe it is an ADC motor. Cart is completly stock from factory. When you press GO pedal solenoid clicks but cart will not go. Reverse buzzer does sound when switched to R. Cleaned and tightened all battery cable connections and replaced 1 batt to batt cable. Replaced white cable from controller to motor A2 as crimp on motor end of cable was bad. Batteries fully charged. 53 volts across pack, 9 volts each. Battery voltage on both terminals of solenoid, diode on solenoid checked good. Battery voltage on A1 and A2 on motor. 50 volts on pack after checking things and pressing pedal several times. Voltage across pack with GO pedal pressed fully drops to 47.8 and instanly starts to climb back up to 48.9. Returns to pack voltage when released. Soleniod appears to work. I checked across terminals with ohm meter and it makes contact when energized. Tried OBC reset, not sure what this would accomplish since I believe it only controls charger, but I tried it anyway. I performed the controller checks on the FSIP website. All that it had me check for my concern was the MCOR input to the controller it passed those steps. It said my controller was bad, which I am leaning towards. Is there a way I can tell for sure before I spend $300.00 on a new one? What should I be seeing at F1 and F2 on the motor? Thanks for any help you can give.
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Unread 07-05-2013, 12:34 PM   #2
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Default Re: 05 CC DS 48V IQ clicks but will not go

Sure sounds controller-ish....
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Unread 07-05-2013, 12:47 PM   #3
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Default Re: 05 CC DS 48V IQ clicks but will not go

Been there, trying find the definitive cause is tough. I've replace controllers on a gut feeling, and (like you) I've checked everything else.
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Unread 07-05-2013, 01:08 PM   #4
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agarage, did that fix it?
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Unread 07-05-2013, 01:17 PM   #5
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Default Re: 05 CC DS 48V IQ clicks but will not go

Yes, the controller fixed that cart
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Unread 07-18-2013, 06:48 AM   #6
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UPDATE:
Cart is fixed. Replaced controller with a Curtis 1510AS. Don't know what difference is, but, old one said it was 250A and new one is 350A. Have not given a good running to see what it'll do yet.
Thanks to everyone.
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Unread 07-18-2013, 11:25 AM   #7
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Default Re: 05 CC DS 48V IQ clicks but will not go

Quote:
Originally Posted by That Ford Guy View Post
UPDATE:
Cart is fixed. Replaced controller with a Curtis 1510AS. Don't know what difference is, but, old one said it was 250A and new one is 350A. Have not given a good running to see what it'll do yet.
Thanks to everyone.
Don't run it at half throttle or less for long periods of time. You'll get a lot of thermal cutback with the 350A version. It's got issues with excess heat. A wiring upgrade would be a good idea. Also, I've found that mounting a heatsink behind the controller works well also.
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Unread 07-18-2013, 11:32 AM   #8
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Quote:
Originally Posted by TahoeDawgZ71 View Post
Don't run it at half throttle or less for long periods of time. You'll get a lot of thermal cutback with the 350A version. It's got issues with excess heat. A wiring upgrade would be a good idea. Also, I've found that mounting a heatsink behind the controller works well also.
What kind of wiring upgrade? What kind of heatsink?
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Unread 07-18-2013, 01:44 PM   #9
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Default Re: 05 CC DS 48V IQ clicks but will not go

Larger cables.... ie 4 or 2 gauge vs the OEM 6 gauge...... I'm referring to a heatsink such as the one used on the first generation precedents. Someone may have a photo. It's a square piece of aluminum with lots of cooling fins on it.
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Unread 07-18-2013, 01:50 PM   #10
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Oh, ok. I know the cables running from battery to battery are 4ga and the 1 I replaced from the controller to the motor is 4ga. I will replace the others. Thanks.
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