Van Wagon 2WD L4-2237cc 2.2L (4Y-EC) (1987)
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Fuel Pressure Vacuum Switching Valve: Testing and Inspection
IDLE-UP AND HIGH-TEMPERATURE LINE PRESSURE UP (W A/C) SYSTEMS
INSPECTION OF IDLE-UP AND FUEL PRESSURE UP SYSTEMS
1. INSPECT IDLE-UP TEMPERATURE SWITCH.
a. Using an ohmmeter, check that there is no continuity between the terminal and body when the oil temperature is below 103°C (217°F).
b. Check that there is continuity between the terminal and body when the oil temperature is above 110°C (230°F).
If operation is not as specified, replace the switch.
2. INSPECT EFI VSV.
2A. Inspect VSV for open circuit.
Using an ohmmeter, check that there is continuity between terminals.
Resistance (Cold): 37 - 44 ohms
If there is no continuity, replace the VSV.
