B4: Check Harness Continuity - Battery Supply

Ignition switch to position 0
Disconnect EM010, EM020 and EM007

Inside ECM housing

Measure the resistance between EM010/009 and EM020/008

- Is the resistance < 0.5 ohms?
Yes
GO to B5 B5: Check Harness Short to Ground
No
Inspect EM010 and EM020 for corrosion, bent/pushed back pins or locate and repair the harness. Test the system for normal operation.