Mercury Boulevard Series - Page 26

E L E C T R I C B I C Y C L E M A N U A L – B O U L E V A R D S E R I E S
Page 26
6. E-bike Troubleshooting – Dealer use only
Problem: Motor assistance does not work and the display can not be turned on
A). Please use a Multimeter to check the battery discharge voltage (36V battery voltage is generally more than 31.5V, 48V battery
voltage is generally more than 42.5V.)
B). Check whether there is voltage at the battery discharge terminal by using multimeter（36V battery voltage is commonly
presented higher than 31.5V, 48V battery voltage is commonly presented higher than 42.5V）
C). Check whether the battery plug is properly installed, and whether the positive and negative electrodes are installed in reverse.
D). If the display is non-functional, swap to a new display to test;
E). If the controller is non-functional, swap to a new controller to test;
F). To check if the wiring harness is normal, swap to a new harness to test.