B17: Check For Short To B+ At O2 Sensor Heater

Ignition switch to position 0
Remove EMS fuse F14.
Disconnect EM010 and EM015.
Using a link lead, bridge EM010/016 and EM010/022.
Ignition switch to position II
Measure the voltage between EM010/023 and EM015/002.

Is the voltage 0 (zero) V?

Yes
Replace EMS fuse F14 but retain link lead.
GO to B18, B18: Check B+ At O2 Sensor Heater Circuit

No
Inspect harness/connectors EM010, EM015 and EM021 for corrosion, damaged/pushed back pins. Repair as necessary and reconnect plug(s).
GO to B19, B19: End