I'm working on a Shark Robot Vacuum that is giving a Cliff Sensor Error.
I have troubleshot the problem down to a Bad Main Circuit Board. The right cliff sensor plug has 15 volts to it. The left sensor plug does not have 15 volts. The grounds between the two are common, so somewhere the main is not supplying 15 volts to the left sensor plug.
It is not worth replacing the main board. I am trying to figure out if I can somehow jumper out the left sensor and make the robot function without the sensor.
The plug has 4 wires:
Black - which is ground
Yellow
White
Red - which should have plus 15 volts.
Can anyone tell me how I can achieve this?

 

Are the wires on the plugs long enough to allow you to switch the plugs over - left plug to right sensor and right plug to left sensor. If you can, that will help to locate the problem.
If the left sensor is still bad, the problem is in the sensor. If the problem switches to the right sensor, the problem is in the main board or connector.

 

Are the wires on the plugs long enough to allow you to switch the plugs over - left plug to right sensor and right plug to left sensor. If you can, that will help to locate the problem.
If the left sensor is still bad, the problem is in the sensor. If the problem switches to the right sensor, the problem is in the main board or connector.

I don't think they will reach, I'll confirm tomorrow.
The problem is Definitely The Main Board! I can unplug both sides and measure the voltage directly on the Board. The right side has 15v. The left side has 0v.
I was thinking I could run a jumper wire from the right 15v over to the left plug that has 0v.
Without a schematic, I don't want to do that unless I can confirm that is the best solution.