Landcruiser 4WD L6-3955cc 4.0L OHV (3F-E) (1988)
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Fuel Pressure Vacuum Switching Valve: Testing and Inspection
INSPECTION OF HIGH-TEMPERATURE LINE PRESSURE UP SYSTEM
1. INSPECT WATER TEMPERATURE SWITCH.
a. Using an ohmmeter, check that there is no continuity between the terminal and body when the oil temperature (in test container) is below 98°
C (208°F).
b. Check that there is continuity between the terminal and body when the oil temperature is above 1O5°C (221°F).
If operation is not as specified, replace the switch.
2. INSPECT VACUUM SWITCHING VALVE (VSV).
a. Check that air flows from the pipe E to pipe F.
b. Apply battery voltage across the terminals.
c. Check that air flows from pipe E to air filter.