ACIS Vacuum Switching Valve
- Remove engine cover and wire harness cover. Remove emission control valve set. See Fig 1. Disconnect vacuum hoses and electrical connector from ACIS Vacuum Switching Valve (VSV).
- Remove VSV if necessary. Measure resistance between VSV terminals. If resistance is not 33-39 ohms at 68°F (20°C), replace ACIS VSV. If resistance is 33-39 ohms at 68°F (20°C), check for continuity between VSV case and each terminal at VSV connector (this checks for an internal short). If continuity does not exist, go to next step. If continuity exists, replace VSV.
- Apply compressed air to VSV port "E". See Fig 2. Air should flow out of filter, but not out of port "F". Using jumper wires, apply 9-14 volts and ground to VSV terminals. Apply compressed air to VSV port "E". Air should flow out of port "F", but not out of filter. If ACIS VSV does not function as specified, replace ACIS VSV.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002