old medalist needs help again

HarleyOne · 07-23-2018, 05:36 PM

Oh guys I in need of so help my old 95 medalist has quit again how is the best way to test this beast I have 38 volts at the pack I have replaced the F &R switch and the solenoid with a known good one and the ITS solenoid still nothing goes the best way to test the motor and Or the controller BTW the solenoid clisks and transfers power when the petal is pushed. thanks for all the help

HarleyOne · 07-24-2018, 06:06 AM

Is there a way to jump power to the motor to see if it is good

LukeL · 07-24-2018, 06:23 AM

Is it a series or DCS drive system?

Club Car DS driver’s club #59

HarleyOne · 07-24-2018, 07:10 AM

Series

LukeL · 07-24-2018, 07:50 AM

Club Car DS driver’s club #59

HarleyOne · 07-24-2018, 08:48 AM

Ok if this works and motor runs is there a sure fire way to test the controller

JohnnieB · 07-24-2018, 09:58 AM

Connect your DVM between the controller's B- and M- terminals.
When pedal is pushed just far enough for solenoid to click, you should get full battery pack voltage.
If you don't, there is a problem in the high current cables, connections or contacts.
If you do, slowly press pedal to floor and the voltage should smoothly decrease to zero.
If it doesn't, check the throttle input to controller.
If throttle is good, controller is bad.

HarleyOne · 07-24-2018, 04:54 PM

Ok motor is good it runs so on to the controller tests

HarleyOne · 07-24-2018, 05:06 PM

Ok with b- and m- connected to meter I had battery voltage when solenoid is energized the voltage DIDNOT steadily go down it remained the same and as I stated earlier I have already replaced the ITS solenoid

JohnnieB · 07-24-2018, 05:34 PM

Voltage between B- and M- stays the same as pedal is pushed to floor, that means either bad controller or bad throttle input to controller.

To check throttle (ITS sensor is only part of the throttle circuit), measure the voltage at the black wire in the six pin connector on top of controller when after solenoid clicks. Ought to be between 14V and 15V.

Measure voltage at white wire. Ought to be 0.5V when the pedal is pushed just far enough to make solenoid click and 1.5V with pedal on floor.

If those voltages are correct, the controller is bad.

07-23-2018, 05:36 PM	#1
HarleyOne Gone Wild Join Date: Jul 2010 Location: winston-salem NC Posts: 236	old medalist needs help again Oh guys I in need of so help my old 95 medalist has quit again how is the best way to test this beast I have 38 volts at the pack I have replaced the F &R switch and the solenoid with a known good one and the ITS solenoid still nothing goes the best way to test the motor and Or the controller BTW the solenoid clisks and transfers power when the petal is pushed. thanks for all the help

07-24-2018, 06:06 AM	#2
HarleyOne Gone Wild Join Date: Jul 2010 Location: winston-salem NC Posts: 236	Re: old medalist needs help again Is there a way to jump power to the motor to see if it is good

07-24-2018, 06:23 AM	#3
LukeL Gone Wild Join Date: Jun 2017 Location: Savannah, GA Posts: 6,539	Re: old medalist needs help again Is it a series or DCS drive system? Club Car DS driver’s club #59

07-24-2018, 07:10 AM	#4
HarleyOne Gone Wild Join Date: Jul 2010 Location: winston-salem NC Posts: 236	Re: old medalist needs help again Series

07-24-2018, 08:48 AM	#6
HarleyOne Gone Wild Join Date: Jul 2010 Location: winston-salem NC Posts: 236	Re: old medalist needs help again Ok if this works and motor runs is there a sure fire way to test the controller

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07-24-2018, 07:50 AM	#5
LukeL Gone Wild Join Date: Jun 2017 Location: Savannah, GA Posts: 6,539	Re: old medalist needs help again Club Car DS driver’s club #59

07-24-2018, 09:58 AM	#7
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: old medalist needs help again Connect your DVM between the controller's B- and M- terminals. When pedal is pushed just far enough for solenoid to click, you should get full battery pack voltage. If you don't, there is a problem in the high current cables, connections or contacts. If you do, slowly press pedal to floor and the voltage should smoothly decrease to zero. If it doesn't, check the throttle input to controller. If throttle is good, controller is bad.

07-24-2018, 04:54 PM	#8
HarleyOne Gone Wild Join Date: Jul 2010 Location: winston-salem NC Posts: 236	Re: old medalist needs help again Ok motor is good it runs so on to the controller tests

07-24-2018, 05:06 PM	#9
HarleyOne Gone Wild Join Date: Jul 2010 Location: winston-salem NC Posts: 236	Re: old medalist needs help again Ok with b- and m- connected to meter I had battery voltage when solenoid is energized the voltage DIDNOT steadily go down it remained the same and as I stated earlier I have already replaced the ITS solenoid

07-24-2018, 05:34 PM	#10
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: old medalist needs help again Voltage between B- and M- stays the same as pedal is pushed to floor, that means either bad controller or bad throttle input to controller. To check throttle (ITS sensor is only part of the throttle circuit), measure the voltage at the black wire in the six pin connector on top of controller when after solenoid clicks. Ought to be between 14V and 15V. Measure voltage at white wire. Ought to be 0.5V when the pedal is pushed just far enough to make solenoid click and 1.5V with pedal on floor. If those voltages are correct, the controller is bad.

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