How to troubleshoot loss of power or pedal assistance (when in PAS levels 1-5)

This is a guide for the external wiring connections outside of the bike, unplug the items individually; realign properly and plug connections back in, and check the bike after doing all plug connections.

If that doesn't change anything, check functionality by unplugging individual connections for the brake sensors, and headlight with those components unplugged, to see if there is a short or error from one of those wiring connections.

Here are the pictures of the connections;
Motor connection, on chainstay near rear wheel and chain:

Display connection, and brake sensor connections at front of bike near wrapped section of cables, these connect into a 3-in-1 wire that the headlight also plugs into: