E2: Check Harness Short to Ground

Remove the ABS modulator cover for access to PI017
With EM013, PI017, disconnected, measure the insulation resistance between EM013/027 and EM013/019
Repeat for EM013/028

- Is the resistance > 10 M ohms?
Yes
GO to E3 E3: Check Harness Short Core to Core
No
Inspect EM013, PI017 and PI001 for corrosion, bent/pushed back pins or locate and repair the harness/splice EMS09. Test the system for normal operation.