Contact us with any comments or concerns. Car Problem Resources Around the Site Information Find out more about us in the press or read stories from drivers who praise our work.The complaints are organized into groups with data published by vehicle, vehicle component, and specific problem. 1995 Grand Cherokee Power Distribution ® is an online automotive complaint resource that uses graphs to show automotive defect patterns, based on complaint data submitted by visitors to the site.Fuel Injector Circuit Diagram (1993-1995 4.0L Jeep Grand Cherokee).įor a complete description of the relays/fuses of the power distribution box, see:.Ignition System Wiring Diagram (1993-1995 4.0L Jeep Grand Cherokee).CKP Sensor Wiring Diagram (1993-1995 4.0L Jeep Grand Cherokee).CMP Sensor Wiring Diagram (1993-1995 4.0L Jeep Grand Cherokee).Auto Shut Down (ASD) Relay Wiring Diagram (1993-1995 4.0L Jeep Grand Cherokee).Key On Engine Running (but no vacuum applied to fuel pressure regulator): 39-41 PSI (2.7-2.9kg/cm²).Key On Engine Running: 31 PSI (2.2kg/cm²). The factory fuel pump specifications are:.If either sensor indicates no engine RPMs, the PCM will not activate the fuel pump relay past the 1-3 seconds initial run time. As you're cranking the engine to get it started, the PCM maintains the fuel pump relay activated only if it receives a crankshaft and camshaft position sensor signal (that shows the engine cranking or running).The PCM activates the fuel pump relay for 1 to 3 seconds when the ignition switch is turned to the RUN position but the engine is not cranked or started.The PCM activates the fuel pump relay and the auto shut down (ASD) relay at the exact same time and thru' the same circuit (PNK wire).The fuel pump relay gets power from fuse #6 (15 Amp) of the Power Distribution Center (PDC).APPLIES TO: This fuel pump relay circuit wiring diagram applies to the following vehicles:
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