Pinpoint Test HA: Natural Gas Fuel Control: Introduction: Notes

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

• HO2S/HTR (Heater) (9F472).
• HO2S Connections.
• Vacuum Systems.
• Fuel Injectors.
• Harness circuits: HO2S GND, HO2S, INJ-1-8, VPWR and SIG RTN.
• Powertrain control module (PCM) (12A650).
• Natural Gas Module (NG) (9F954).

Fig 1: Identifying Heated Exhaust Oxygen Sensor (HO2S) Connector

Courtesy of FORD MOTOR CO.

Fig 2: Identifying Natural Gas (NG) Module Connector

Courtesy of FORD MOTOR CO.