Toyota-variable induction system (T-VIS) (3S-GTE)¶

Inspection of T-VIS¶

1. Warm up and stop engine.

   Allow the engine to warm up to normal operating temperature.

2. Connect tachometer. (See Distributor (3S-GTE) › Installation of distributor)

3. Connect vacuum gauge.

   Using a 3-way connector, connect the vacuum gauge to the hose between the VSV and actuator.

   

4. Inspect T-VIS operation.

   1. Check that the vacuum gauge indicates vacuum at idling.

      

   2. Check that the vacuum gauge indicates zero at 4,200 rpm or more.

      Hint

      If regular unleaded gasoline is used, the vacuum gauge also indicates zero below 4,200 rpm.