P1670 FORD - Electronic Feedback Signal Not Detected
Repair Importance Level:
Repair Difficulty Level:
- Open fuse
- Faulty Injector Driver Module (IDM) relay
- Open or shorted Injector Driver Module (IDM) enable circuit
- Open/short in EF circuit
- Open/short in Fuel Delivery Command Signal (FDCS) circuit
- Injector Driver Module (IDM) powering circuits
- Faulty Powertrain Control Module (PCM)
The problem means that there is no communication between the Powertrain Control Module (PCM
) and the Injector Driver Module (IDM), most of the times the problem is a faulty IDM.
- Engine Light ON (or Service Engine Soon Warning Light)
P1670 Ford Description
The Injector Driver Module (IDM) provides the EF output signal to the Powertrain Control Module (PCM) to confirm that proper timing/duration of Fuel Delivery Command Signal (FDCS) was received. Additionally, the EF signal is used to send diagnostics of the IDM and injectors (electrical) to the PCM.
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