Test O: Harness Short To Screen

With EM010, EM011, PI006 and PI042 disconnected, measure the insulation resistance between EM011/014 and in turn:
EM010/020
EM010/021
EM011/008
EM011/012

- All resistances >10 M ohms?
Yes
GO to O2 O2: Check Harness Core To Core Insulation
No
Inspect EM010, and EM011 for corrosion, bent/pushed back pins or locate and repair the harness/connector PI001. Test the system for normal operation.