Proportioning Valve (2WD): Inspection

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 painted areas, wash it away with water immediately.
Depress pedal slowly when raising front brake pressure.
Check rear brake pressure 2 seconds after front brake pressure reaches specified value.
Disconnect harness connectors from ABS actuator and electric unit before checking.

Fig 1: Checking Brake Fluid Pressure
Courtesy of NISSAN MOTOR CO., U.S.A.

Remove front LH tire.
Connect tool to air bleeders on front LH brake caliper and rear LH or RH brake wheel cylinder.
Install front LH tire.
Before installing front LH tire, confirm the tool is not touching the front LH wheel.

Fig 2: Installing Brake Fluid Pressure Gauge To Air Bleeders
Courtesy of NISSAN MOTOR CO., U.S.A.
Bleed air from the tool.
Check fluid pressure by depressing brake pedal.

Fig 3: Brake Fluid Pressure Reference Table
Courtesy of NISSAN MOTOR CO., U.S.A.

If output pressure is out of specifications, replace master cylinder assembly (built-in type).
Bleed air after disconnecting the tool. Refer to "BLEEDING BRAKE SYSTEM " .
Install front LH tire.

Fig 4: Identifying Variation Between Front And Rear Brake Fluid Pressure
Courtesy of NISSAN MOTOR CO., U.S.A.