13-17
GO
-KARTS
B
U
MPERBOAT
S
Specifications subject to change without notice - Check our website for valuable information including videos, workshop and operations manuals. www.jjamusements.com
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ENDURANCE CL
UTCH PLA
TES
TM
RELAY
OVERVIEW
The J&J electric go-kart uses this device as a safety-related item to remove all power to the motor when the throttle is
at the rest position for a given period of time (approximately 10 seconds). The “seat switch” circuit of the controller is
programmed as part of the J&J profile to provide this feature. The purpose is to prevent “unintended acceleration.” This
same feature is found on many electric vehicles.
RELAY TROUBLESHOOTING
What if the controller shows power light off with Main ON/OFF power switch “On”?
QUICK TEST: Raise the drive wheels off the ground so they can turn freely. Using a heavy (10 ga) jumper, route across the
two large terminals. The power light should now be “on” steadily. Briefly push the “go” pedal: The go-kart should perform
normally. NOTE: 10ga jumper is for testing purposes only and will not handle the amperage of extended operation.
This test verifies that controller and cables are functioning.
Next remove the 10ga jumper. Using a digital volt/ohm meter, test for system voltage at the white wire terminal of the relay;
the relay has system power to the activation windings at all times via this wire. The ground side (black wire) goes to the
controller, which uses the interruption of the ground circuit to “switch” the relay on or off.
If system power is present at the white wire of the activation coil, use a 14ga jumper to clip from the black wire (ground
side) to the ground post of the controller (black cable). The relay should activate (pull in) and the go-kart should work as
normal. If no “click” can be heard from the solenoid when jumpered to the ground, then the solenoid activation windings
are at fault. If the relay “clicks”, but the go-kart will not function, then the internal relay terminals are bad OR the battery
amperage is too low for the go-kart to function (this can be caused by battery or cable connection problems).
NOTE: This relay has a very low failure rate, so substitute it with unit that is known to be functional before removing the
existing relay.
NOTE:
Ohm meter specification across the activation coil is 126.0 ohms.