Intake Manifold (W/O Glow Plug Controller) Inspection

Disconnect the vacuum hose from the actuator.

w/ EGR Cooler:

1. Check the operation of the swirl control valve.
   
   

   
   
   
   

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

3. Connect the vacuum pumps as shown in the illustration. First apply negative pressure to the diaphragm closer to the intake manifold. This will cause the actuator rod to move, which causes the swirl control valve to move. Then, apply negative pressure to the diaphragm on the outer side. This will cause the actuator rod to move further, which also causes the swirl control valve to move further. Check that the valve is fully closed when a negative pressure of 35 kPa (263 mmHg, 10 in.Hg) is applied.
   

4. 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.
   

w/o EGR Cooler:

1. Check the operation of the swirl control valve.
   

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

3. 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.
   

4. 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

*A	w/ EGR Cooler	*B	w/o EGR Cooler
*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 in the table below.
   

   Replace Parts

   w/ EGR Cooler	Vacuum Control Valve Set
   w/o EGR Cooler	Intake Manifold





2. Apply battery voltage across the terminals.
   
   

   
   
   
   
   

   Text in Illustration

   *A	w/ EGR Cooler	*B	w/o EGR Cooler
   *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 in the table below.
   

   Replace Parts

   w/ EGR Cooler	Vacuum Control Valve Set
   w/o EGR Cooler	Intake Manifold