A16: Check For Short to B+ At O2 Sensor Heater
Ignition switch to position 0
Remove EMS fuse F14
Disconnect EM010 and EM015
Inside ECM housing
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 A17 A17: 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 A18 A18: End