Litter-Robot II Repair Guide – Chapter 5: Sensor Harness

In this chapter of our Litter-Robot II Repair Guide, we will help you replace the sensor harness on your Litter-Robot II.

You can find our Litter-Robot II troubleshooting guides here:
Litter-Robot II Basic Troubleshooting Guide
Litter-Robot II Advanced Troubleshooting Guide

You can find our Litter-Robot II repair guides here:

Litter-Robot II Repair Guide - Chapter 1: Motor
Litter-Robot II Repair Guide - Chapter 2: Circuit Board
Litter-Robot II Repair Guide - Chapter 3: Power Jack
Litter-Robot II Repair Guide - Chapter 4: Cat Sensor Micro Switch
Litter-Robot II Repair Guide - Chapter 5: Sensor Harness

You can refer to our advanced troubleshooting guide to help you open up your Litter-Robot II.

Replace the Litter-Robot II sensor harness To replace the sensor harness, you will need a 5/16" socket, a ratchet and pliers.  

Removing the Litter-Robot II sensor harness

Remove the Black Cover to Reveal the Cat Sensor

Pull Out the Cat Sensor and the First Wire Connector Using Pliers

Disconnect the Second Wire Connector Using Pliers

Remove the Circuit Board Panel to Reveal the Circuit Board

Locate the Sensor Harness Connectors

Disconnect the Circuit Board

Open your Litter-Robot using our Litter-Robot II Advanced Troubleshooting Guide.

Open the Litter-Robot II and Pull the Circuit Board Connectors Into the Litter-Robot

Locate the Black Cover Inside the Base

Removing the Black Cover Reveals the Motor and Safety Line Connections

Disconnect the Motor from the Harness

Use the Ratchet to Remove the Motor from the Base

Locate the Hall Effect Sensor Inside the Base

Pull Out the Hall Effect Sensor Holder from the Base

Remove the Hall Effect Sensor from the Holder

Locate the Power Switch Connections

Disconnect the First Wire Connector with the Pliers

Disconnect the Second Wire Connector with the Pliers

Disconnect the First Wire Connector of the Cat Safety Line Switch

Disconnect the Second Wire Connector of the Cat Safety Line Switch

Next is the Power Jack

Flip the Base Over and Locate the Power Jack

Remove the Nut from the Power Jack with Pliers

Finally, Remove the Power Jack to Remove the Harness from the Base

Installing the Litter-Robot II sensor harness

First, Install the Power Jack and Use the Pliers to Tighten the Nut

Flip the Base Over

Using Pliers, Connect One of the Black Wires to the Safety Line Switch

Connect the Other Black Wire to the Safety Line Switch

Connect a White Wire to the Power Switch

Connect the Other White Wire to the Power Switch

Take the Harness Sensor

Insert the Hall Effect Sensor into the Holder. The White Stripe Has to be Visible.

Install the Motor Using the Ratchet

Connect the Motor to the Harness. Note the Green is Connected with the Red Wire and the Brown is Connected with the White Wire

Insert the Motor Connections with the Safety Line Switch

Install the Black Cover

Install the Hall Effect Sensor Holder, Make Sure to Pass the Sensor Harness Between the Holder and the Base

Slide the Circuit Board Connections Under the Plastic Tab

Pass the Circuit Board Connections Through the Base to the Front

Connect the Circuit Board as Shown

The Circuit Board is Installed

Finally, Install the Blue Wire on the Cat Sensor Switch

Install the Black Wire on the Cat Sensor Switch

Slide the Cat Sensor Switch Under the Metal Trigger Plate