Test Notes

You should enter this pinpoint test only when directed here from the symptom flow charts.

This pinpoint test is intended to diagnose only the following:
- Powertrain Control Module (PCM)
- Injector Driver Module (IDM)
- harnessed circuits: Fuel Delivery Command Signal (FDCS)

Test Schematic:

DESCRIPTION
The fuel delivery command signal is the output that controls the fuel injection timing and controls fuel quantity (with the Injection Pressure Regulator (IPR)). This signal is sent with the Cylinder Identification (CID) signal to the IDM which provides power and distributes the proper signal to the appropriate injector.