Bosch vp 44 wiring diagram3/30/2024 ![]() ![]() Check for poor connection/terminal contact at FPCM harness connector. FPCM harness connector is located on end of fuel injection pump. If any problems exist, repair wiring or connectors as necessary.ģ. ECM is located on driver's side of engine, just in front of fuel transfer pump and contains a 50-pin connector. FPCM located on top of fuel injection pump. Inspect wiring and connectors between FPCM and ECM. At this time, conditions required for DTC to be stored are not present. If Good Trip Counter for DTC P1689 is displayed and equal to zero, go to step 3. If Good Trip Counter for DTC P1689 is displayed and not equal to zero, go to next step. Using DRBIII(R) scan tool, check for DTCs. DTC may be stored if the time between CAN messages is more than 3 seconds or FPCM does not receive CAN message.įuel Injection Pump Relay Output Circuit Openġ. Injection pump module is referred to as Fuel Pump Control Module ( FPCM) in test procedures. DTC P1689: NO COMMUNICATION BETWEEN ECM & INJECTION PUMP MODULE ( OBDII)Ĭommunication between Engine Control Module ( ECM) and fuel injection pump module is monitored when ignition is on.
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