Airtightness Check

Check the high- and low-pressure side readings of the manifold gauge.
- If the manifold gauge reading has changed, inspect the refrigerant system following the symptom troubleshooting procedure. (See FOREWORD [FULL-AUTO AIR CONDITIONER] .) (See FOREWORD [MANUAL AIR CONDITIONER] .)
- If the reading has not changed, go to Charging New Refrigerant. (See CHARGING NEW REFRIGERANT .)