VOLVO
BCM-C111802 - Brake servo disengage switch. General malfunction information. General signal error
System
Bremsestyring (BCM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
1 modellXC90 (2003–)
Hva betyr feilkoden?
The brake control module (BCM) has received a signal from the pedal pressure sensor in the brake booster that it judges to be implausible, so it cannot determine with certainty whether the brake pedal is pressed. The code only applies to cars with DSTC. The stability systems and brake assistance are switched off for as long as the fault remains.
Mulige årsaker
- Contact resistance or oxidation in connectors and joints
- Open circuit in the wiring, or wiring shorted to ground or supply voltage
- Damaged pedal pressure sensor
- Damaged brake control module
Hva du kan gjøre
- 1Check the plugs at the brake control module and at the pedal pressure sensor for poor contact and oxidation
- 2Have a workshop read the pedal pressure sensor status: it should be off with the pedal untouched and switch on when the pedal is pressed
- 3Check the wiring for breaks, chafing and short circuits to ground and supply voltage
- 4If the sensor gives a wrong value despite intact wiring, a workshop needs to replace the brake booster
- 5The brake system is safety-critical, so have a workshop carry out all work on the brake booster and the module
Symptomer du kan merke4
- General warning lamp on
- Traction control does not work
- Stability function does not work
- Anti-skid function does not work
Hva feilen kan påvirke2
- Traction control, stability control and dynamic stability control (AYC) are disabled
- Brake assistance (BA) is disabled
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