Legacy Outback VDC Wagon AWD F6-3.0L (2001)
1. Start engine and depress brake pedal with pedal force of 196 N (20 kg, 44 lbs.). Keep engine running until a vacuum of 66.7 kPa (500 mm-Hg,
19.69 inch-Hg) = point B is indicated on vacuum gauge while the pedal is still depressed.
2. Stop engine and watch vacuum gauge. If the vacuum drop range is less than 3.3 kPa (25 mm-Hg, 0.98 inch-Hg) within 15 seconds after stopping
engine, brake booster is functioning properly. If defective, refer to "AIR TIGHTNESS CHECK". Under Without Using Gauges. See: Without
Using Gauges
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Lack of boosting action check
Turn off engine, and set the vacuum gauge reading at "0". Then, check the fluid pressure when brake pedal is depressed. The pressure must be
greater than the standard value listed.
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Boosting action check
Set the vacuum gauge reading at 66.7 kPa (500 mm-Hg, 19.69 inch-Hg) by running engine. Then, check the fluid pressure when brake pedal
is depressed. The pressure must be greater than the standard value listed.