Intake Manifold Inspection

Disconnect the vacuum hose from the actuator.

Check the operation of the swirl control valve.

1. Check that the valve is fully opened under normal conditions.
   

2. Connect a vacuum pump to the control valve. Check that the valve is fully closed when a negative pressure of 35 kPa (263 mmHg, 10 in.Hg) is applied.
   

3. Leave it for 1 minute and check that the vacuum pump needle does not move.
   If the result is not as specified, replace the intake manifold.
   

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	33 to 39 Ω
1 - Body ground 2 - Body ground	20°C (68°F)	10 kΩ or higher

Check the operation according to the value(s) in the table below.

Text in Illustration

*1	Port E
*2	Filter
	Airflow

1. Check that air flows from port E to the filter.
   If the result is not as specified, replace the intake manifold.
   





2. Apply battery voltage across the terminals.
   

   Text in Illustration

   *1	Port E
   *2	Port F
   	Airflow

3. Check that air flows from port E to port F.
   If the result is not as specified, replace the intake manifold.