EGR Control Solenoid: Testing and Inspection

VACUUM SWITCHING VALVE FOR EGR INSPECTION
Except Model No. VZN17O - 4wd Long Wheel Base





1. REMOVE VSV ASSEMBLY
Disconnect the connector and 2 vacuum hoses and remove the 2 bolts and VSV assembly.
2. INSPECT VSV





A. Inspect VSV for open circuit
Using an ohmmeter, check that there is continuity between the terminals.

Resistance: At 20°C (68°F): 33 - 39 ohm

If there is no continuity, replace the VSV.





B. Inspect VSV for ground
Using an ohmmeter, check that there is no continuity between each terminal and the body.
If there is continuity, replace the VSV.

C. Inspect VSV operation





(a) Check that air flows from port E to port G.
(b) Apply battery positive voltage across the terminals.





(c) Check that air flows from port E to the filter. If operation is not as specified, replace the VSV.
3. REINSTALL VSV ASSEMBLY
(a) install the VSV assembly with the 2 bolts.

Torque: 8 N.m (80 kgf.cm 71 in.lbf)

(b) Connect the 2 connectors and 4 vacuum hoses to the 2 VSV.