Proportioning Valve Function Test
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
- Connect two pressure gauges, one each to the input side and output side of the proportioning valve, as shown.
- Air bleed the brake line and the pressure gauge.
- While gradually depressing the brake pedal, make the following measurements and check to be sure that the measured values are within the allowable range.
- Output fluid pressure begins to drop relative to input fluid pressure (split point).
Standard value: 2.7 - 3.2 MPa (391 - 462 psi)
- Check that the output fluid pressure is at standard value when the input fluid pressure indicates 9.8 MPa (1,422 psi).
Standard value: 4.3 - 5.1 MPa (619 - 732 psi)
- Output fluid pressure difference between left and right brake lines.
Limit: 0.4 MPa (57 psi)
- Output fluid pressure begins to drop relative to input fluid pressure (split point).
- If the measured fluid pressures are not within allowable ranges, replace the proportioning valve.