Tacoma Extra Cab 4WD L4-2693cc 2.7L DOHC MFI (1997)
Vacuum Switching Valve (VSV) for EVAP: Testing and Inspection
VACUUM SWITCHING VALVE (VSV) FOR EVAP INSPECTION
1. REMOVE VSV
(a) Disconnect the connector and 2 EVAP hoses from the VSV.
(b) Remove the screw and VSV.
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): 30-34 Ohms
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 does not flow from ports E to F.
NOTICE: Never apply more than 93 kPa (0.95 kgf/sq.cm, 13.5 psi) of pressure compressed air to the VSV.
