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Unread 04-14-2015, 01:18 PM   #1
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Default mcor repair question...

I have a 2004 and 2008 1/2 Precedent. Both have generation 1 pedal assemblies and are exhibiting the same symptoms...you have to pump the pedal numerous times before the backup buzzer will sound and the cart will move. I haven't got into taking either pedal assembly apart, however, I suspect they are both mcor2's and that the mcor is the issue in both cases. I've read the sticky about repairing the DS mcor with the ITW Licon #11-304 microswitch. Does anyone know if this (#11-304) is the same switch that is in the Precedents...???

Thanks !
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Unread 04-14-2015, 01:34 PM   #2
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Default Re: mcor repair question...

The MCOR on a Precedent cannot prevent the backup buzzer from operating.

Only the Tow/Run switch on Tow or the OBC charger lockout can do that.

The ITW switch is the correct one for an MCOR2.
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Unread 04-14-2015, 02:23 PM   #3
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Default Re: mcor repair question...

If it's the resistive track inside the MCOR the switch isn't going to help. If putting a paperclip inside the MCOR two pin connector plug plug solves your problem then yes go ahead and replace the switch.
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Unread 04-14-2015, 02:24 PM   #4
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Default Re: mcor repair question...

Quote:
Originally Posted by jjance View Post
If it's the resistive track inside the MCOR the switch isn't going to help. If putting a paperclip inside the MCOR two pin connector plug plug solves your problem then yes go ahead and replace the switch.
Jump the two wire connector with a paperclip first, if that solves your problem then replace the MS. If not, then the MS is not your problem.
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Unread 04-14-2015, 02:28 PM   #5
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Default Re: mcor repair question...

Thank you all...! You guys are absolutely great...!!!
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Unread 04-14-2015, 04:34 PM   #6
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Default Re: mcor repair question...

Like Sergio said, the MCOR can't keep the reverse buzzer from turning on, but if the microswitch inside the MCOR is bad and it doesn't make a connection every time you cycle the pedal, it can cause your symptoms. If the vehicle sits for a while and goes to sleep, it won't wake up and begin buzzing until you either cycle the pedal or plug in and unplug the charger. Lots of people get the misconception that the MCOR is a problem when this happens, but it's actually just a delayed reaction from the controller. It's normal. Next time you go try to use the vehicle do it a little different. Put the switch in reverse, turn the key on, depress and release the pedal one time and wait. Within 5 seconds the buzzer should turn on and you'll be ready to go. If the MCOR microswitch was bad, you'd be having symptoms while driving it as well, but based on your description it's only when you first attempt to use the vehicle.
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Unread 04-14-2015, 06:17 PM   #7
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Default Re: mcor repair question...

Thanks David...I'll certainly give it a try...!
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