S1 - Vacuum Check

- Disconnect vacuum booster hose from booster.

- Connect Rotunda(r) Vacuum/Pressure Tester 059-00008 or equivalent to the vacuum hose with a T-fitting.

- Key on, engine running. Allow engine to reach normal operating temperature.

- Record the vacuum reading.

- Is the vacuum reading at least 51-64 kPa (15-19 in-Hg)?

YES -- Go to S2. S2 - System Inspection

NO -- Locate and repair source of low vacuum.