Pump motor error
- Make
- Fiat
- Model
- Stilo Factory Service Manual
- Year
- 2001–2007
- Section
- Examiner › Pump motor error
PUMP MOTOR ERROR
The diagnostic equipment signals the following error: C1266 Pump Motor
This error is signalled if the control unit detects an 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 reading circuit is damaged.
| Results of the tests | ||||
| 1 | ELECTRICAL CONNECTIONS CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
Check that the pump wiring is not faulty. Check that the pump connector is not faulty at the pins (on both the wiring and control unit sides) by carrying out a visual inspection. In particular, check that:
They are not distorted or broken Check the state of the power fuse for the engine compartment junction unit See E7020 ABS | Continue to Step 2 | Wiring connections faulty | Restore the correct connections See E7020 ABS | |
| Pump side connector faulty | Replace the ABS electro-hydraulic control unit Op. 3340A12 | |||
| Wiring side connector faulty | Replace the ABS wiring Op. 5505C28 | |||
| Fuse broken | Identify the cause of the problem with the fuse and eliminate it, then replace the fuse | |||
| 2 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
Delete the errors using the diagnostic equipment. Turn the ignition OFF and then ON to make the control unit check whether there are errors present Check that the fault is no longer present | End of diagnosis | The fault persists | Replace the ABS electro-hydraulic control unit Op. 3340A12 | |
Parts & tools for this job For 2001 Fiat Stilo
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLSocket setSearch: socket set metric
- BOOKHaynes manualSearch: Haynes manual Fiat Stilo
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.