184000618 - Z66 PUMP MOTOR ERROR

The diagnostic equipment signals the following error: C1100 Pump Motor
This error is signalled if the control unit detects and open circuit or short circuit (positive or earth) for the motor or the feedback, if the motor relay is broken, if the pump is stuck or if the operating circuit or the reading circuit is damaged
Results of the tests
1ELECTRICAL CONNECTION CHECKAll OKProblems encounteredOperation
Check that the ABS rol unit connector is not faulty at the pins on both the wiring side and the control unit side by carrying out a visual inspection

In particular, check that:

  • They are not oxidized
  • They are not distorted or broken
  • Check that there is no water penetration
Check the state of the power fuse in the engine compartment junction unit See E7020 ABS
Move on to Step 2Pump side connector faultyReplace the ABS electrohydraulic control unit Op.    Op. 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT
Wiring side connector faultyReplace the ABS wiring Op. 5505C28 INTERGRATED ENGINE BAY AND ABS SYSTEM WIRING - R R
Wiring faultyRestore the correct connection
Fuse faultyIdentify the cause of the problem with the fuse and eliminate it, then replace the fuse
2CHECK ON CORRECT OPERATIONAll OKProblems encounteredOperation
Delete the errors using the diagnostic equipment.Turn the key OFF and then ON to ensure that the control unit checks whether the errors are still present.Check that the fault is no longer presentEnd of diagnosisThe fault persistsReplace the ABS electrohydraulic control unit Op.    Op. 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT