MEFI Fuel Injection
Digital Engine Position Sensor DEPS Power DEPS Lo Sensor Signal
CKP or CMP Sensor
ECM
The DEPS generates a digital signal that is sent back to the ECM. DEPS stands for "Digital Engine Position Sensor". Two ECM terminals provide a clean power supply (J2-17) and return or ground (J2-18) for digital sensors such as the crankshaft sensor (CKP) and the camshaft sensor (CMP) used on MEFI 4 MPI engines. DEPS Power is a regulated and filtered +11.5 volt DC supply specifically for digital engine position sensors and is also used to power the cam sensor in a High Voltage Switch distributor on the small block V8’s and the 4.3 V6 Devices other than digital engine sensors should NOT be connected to J2-17 and J2-18 because of the potential to create electrical noise that may interfere with engine operation.
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