Pinpoint Test H: Fuel Control: Introduction: Notes

NOTE: This pinpoint test is intended to diagnose the following:

• HO2S/O2S (9F472).
• HO2S/O2S (9G444).
• Fuel injector(s) (9F593).
• Harness Circuits: HO2S, SIGRTN, VPWR, HO2S Heater & INJ 1 - 10.
• Vacuum Systems.
• Powertrain control module (PCM) (12A650).

Fig 1: Identifying HO2S Locations

Courtesy of FORD MOTOR CO.

Fig 2: Identifying Heated Oxygen Sensor (HO2S) Connector

Courtesy of FORD MOTOR CO.

Fig 3: Identifying Injector (INJ) Connector

Courtesy of FORD MOTOR CO.