Pinpoint Test P: Misfire/Injector Driver Circuit Operation: Introduction: Detection/Management
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2004 Ford RV Cutaway, 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, and 2004 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
- Key on.
- Record the DTCs stored in KOEO On-Demand Self-Test and KOEO Injector Electrical Self-Test.
- Access the Continuous DTCs.
- Record the DTCs displayed.
- CLEAR the DTCs.
- DTCs are now cleared from memory. Repeat the KOEO On-Demand Self-Test and KOEO Injector Electrical Self-Test. Any DTCs that reappear are hard faults. If no DTCs reappear, then the fault is intermittent.
The fuel injection control module (FICM) is capable of detecting individual injector open and shorts to ground or voltage while the engine is running. The FICM is also capable of detecting right or left bank high side opens or shorts to ground. An on-demand injector self-test will allow the operator to verify operation of all injector solenoids with the engine off. FICM detected DTCs will not be transmitted if the inter-module (PCM to FICM) controller area network (CAN) is inoperative.