Dual Proportioning Valve: Inspection

WARNING: This page is about a different car, the 2005 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Carefully monitor brake fluid level at master cylinder.
Use new brake fluid "DOT 3".
Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed on paint areas, wash it away with water immediately.

Connect Tool to air bleeders of front and rear brakes on either LH and RH side.
Bleed air from the Tool.

Check fluid pressure by depressing brake pedal.

BRAKE FLUID PRESSURE SPECIFICATION

Unit: kPa (kg/cm² , psi)
Applied model	All QG18DE	QR25DE without ABS	QR25DE with ABS
Applied pressure (Front brake)	7, 355 - (75, 1, 067)	6, 374 (65, 924)	6, 374 (65, 924)
Output pressure (Rear brake)	5, 099 - 5, 492 (52 - 56, 740 - 796)	3, 775 - 4, 168 (38 - 42, 548 - 604)	4, 119 - 4, 511 (42 - 46, 597 - 654)

Fig 1: Connecting Brake Fluid Pressure Gauges To Air Bleeders Of Front & Rear Brakes, On LH & RH Side

Courtesy of NISSAN MOTOR CO., U.S.A.

If output pressure is out of specification, replace dual proportioning valve.

Bleed air after disconnecting the Tool. Refer to BLEEDING BRAKE SYSTEM .

Fig 2: Checking Brake Fluid Pressure
Courtesy of NISSAN MOTOR CO., U.S.A.