E13: Heated O2 Sensor Screen Ground Continuity

With EM012 and EM023 disconnected, measure the resistance between EM012/022 and EM023/004.

Is the resistance < 0.5 ohms?

Yes
GO to E14, E14: Check For Short to B+

No
Inspect harness/connectors EM012, and EM023 for corrosion, damaged/pushed back pins.
Repair as required and reconnect plug(s).
GO to E18, E18: End