Output Functions: Detection/Management
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- Key on.
- Record the diagnostic trouble codes (DTCs) stored in key on, engine off (KOEO) on-demand self-test and KOEO injector electrical self-test.
- Access the continuous DTCs.
- Record 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.
NOTE:
FICM detected DTCs will not be transmitted if the inter-module (PCM to FICM) controller area network (CAN) is inoperative.
The FICM is capable of detecting individual injector opens 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 allows the operator to verify operation of all injector solenoids with the engine off.