Friday 28 June 2019

P1916

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  • P1916

    P1916


    Diagnosis information - DME V6 DFI Driver of auxiliary water pump relay

    NOTE: If the control unit connector B is disconnected from the DFI during fault finding or if the power supply is interrupted elsewhere (battery, fuse), teaching of the throttle valve adjusting unit must be performed.


    NOTE: If the ignition is switched on with the connector [B] disconnected from the DFI control unit, the fault >DFI control unit TIMEOUT< can be entered.


    Diagnostic conditions

  • Battery positive voltage between > 10 V and 16 V
  • Time after engine starts > 10 seconds

    Possible fault causes

  • Short circuit to B+
  • Short circuit to ground
  • Open circuit in line
  • Fuse F10 faulty (fuse carrier in plenum panel E-box)
  • Auxiliary water pump relay faulty

    Affected contacts on the DFI control unit connector


    Connector [B]:
  • Contact 33

    Affected contacts on the auxiliary water pump relay

  • Contact 85
  • Contact 86