Previa Van LE 4WD L4-2438cc 2.4L DOHC SC MFI (1997)
A/C Idle Up Valve: Component Tests and General Diagnostics
A/C IDLE-UP VALVE INSPECTION
1. Remove idle-up valve.
(a) Disconnect the following connector and hoses:
(1) Idle-up valve connector.
(2) Air hose (from air cleaner hose) from port E of idle-up valve.
(3) Air hose (from air connector vent pipe) from port F of idle-up valve.
(b) Remove the bolt and idle-up valve.
2. Inspect idle-up valve.
A. Inspect idle-up valve 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 idle-up valve.
B. Inspect idle-up valve for ground.
Using an ohmmeter, check that there is no continuity between each terminal and the body.
If there is continuity, replace the idle-up valve.
C. Inspect idle-up valve operation.
