volvo Workshop Repair Guides

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Brake Fluid Pressure Sensor/Switch: Service and Repair

Pressure sensor, master cylinder, replacing

Preparations for replacing the pressure sensor on the master cylinder
(5-cylinder naturally aspirated engine)
Remove the air cleaner (ACL) and preheating hose, see:
Left-hand drive, Master cylinder, replacing, L.H.D See: Brakes and Traction Control/Hydraulic System/Brake Master Cylinder/Service and
Repair/Master Cylinder, Replacing, L.H.D 
Right-hand drive, Master cylinder, replacing, R.H.D See: Brakes and Traction Control/Hydraulic System/Brake Master Cylinder/Service and
Repair/Master Cylinder, Replacing, R.H.D 
Cars with turbocharger (TC):

Remove the air hose between the air cleaner (ACL) and the turbocharger (TC).
Remove the relay box. Master cylinder, replacing, R.H.D See: Brakes and Traction Control/Hydraulic System/Brake Master Cylinder/Service and
Repair/Master Cylinder, Replacing, R.H.D 

Removal

Preparations for checking the pressure sensor

Turn on the ignition.
Press the dynamic stability and traction control (DSTC) button on the dashboard (the green lamp lights in the button) so that the DSTC system is
engaged.

Checking pressure sensor

Sensors and Switches > Sensors and Switches - Brakes and Traction Control > Brake Fluid Pressure Sensor/Switch > Component Information > Service and Repair

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