A4: Check Relay to Coil Continuity

With Ignition relay (#2) removed
Measure the resistance between pin 5 Ignition coil relay socket & in turn pin 1 coil connector(s) PI018, PI019, PI020, PI021, PI022, PI023, PI024, PI025

Is the resistance < 0.5 ohms?

Yes
Go to A5
Do not replace relay

No
Inspect EM026, PI001/053, PI018 to PI025 & pin 5 Ignition coil relay socket for corrosion, bent/pushed back pins or locate & repair the harness/connector PI001/splices PIS05 & EMS22. Test the system for normal operation