Pinpoint Test H: Fuel Control: Introduction: Notes

WARNING: CROWN VICTORIA POLICE INTERCEPTOR VEHICLES EQUIPPED WITH FIRE SUPPRESSION SYSTEM, REFER TO FIRE SUPPRESSION SYSTEM FOR IMPORTANT SAFETY WARNINGS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

WARNING: WHILE CONDUCTING TESTS ON A HOT ENGINE TAKE ALL SAFETY PRECAUTIONS TO PREVENT SKIN CONTACT WITH HOT ENGINE COMPONENTS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

This pinpoint test is intended to diagnose the following:

HO2S/O2S (9F472)
HO2S/O2S (9G444)
fuel injector(s) (9F593)
harness circuits: HO2S, HO2S Heater, VPWR, and SIGRTN
vacuum systems
powertrain control module (PCM) (12A650)

Fig 1: Identifying HO2S Location (1 Of 2)
Courtesy of FORD MOTOR CO.

Fig 2: Identifying HO2S Location (2 Of 2)

Courtesy of FORD MOTOR CO.

Fig 3: Heated Oxygen Sensor (HO2S) Connector

Courtesy of FORD MOTOR CO.