Failed Bit 2 Or 3 - Outer & Inner Cliff Sensors - iRobot Roomba Scheduler Service Manual

Failed BiT 2 or 3 – Outer & Inner Cliff Sensors
Roomba Symptom: Roomba does not see cliffs or
o Does not run, says "ehh"
o Backs up in circular arcs
o Stops with "uh-oh and 5 beeps"
Clean the sensors with compressed air.
Is the side brush blocking the outer sensor? Rotate
the side brush arms away from the cliff sensor
opening.
Remove the outer bumper and inspect the cliff
sensor wiring.
o When attaching the inner and outer bumper verify
that the wires are well routed and not being
pinched.
o Verify that the bumper can be compressed and
released freely on both sides
o Ensure BiT passes.
Inner Bumper Module
19