VOLVO
ECM-1515 - Brake vacuum sensor. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerS40 (1996–2004), V40 (1996–2004)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The engine control module (ECM) reads the signal from the brake vacuum sensor, which measures the vacuum in the brake booster. If the signal is too high or too low for a certain time, fault code ECM-1515 is set.
Mulige årsaker
- Contact resistance in the connectors at the brake vacuum sensor or the control module
- Open circuit or short circuit in the signal wire to voltage or ground
- Open circuit in the ground wire or short circuit to voltage
- Open circuit in the supply wire to the sensor
- Defective brake vacuum sensor
Hva du kan gjøre
- 1Switch off the ignition and check the connector at the brake vacuum sensor and the control module for contact resistance and oxidation
- 2With a multimeter, check that the signal wire is not broken and has no contact with ground or battery voltage
- 3Check that the ground wire and the supply wire to the sensor are intact and firmly attached
- 4If you have a diagnostic tool: read the brake vacuum sensor value in live data with the engine idling and check that it looks reasonable
- 5If no fault is found in the wiring but the fault remains, the sensor may be faulty and need replacing. Have a workshop do this
- 6If braking feels reduced, do not drive the car until a workshop has checked the brakes
Symptomer du kan merke1
- The malfunction indicator light comes on
Hva feilen kan påvirke1
- The engine does not run in ultra-lean combustion mode
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