| Circuit Diagram |



Description Variable Intake manifold Solenoid (VIS) valve is installed on the intake manifold. The VIS valve controls the vacuum modulator which activates a valve in the intake manifold.
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the VIS valve connector. 3.
Replacement 1. Remove the heater unit assembly. (Refer to Heater - "Heater Unit") 2. Loosen the mounting screws and remove the heater core cover (A). 3.
Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater unit assembly. (Refer to Heater - "Heater Unit") 3. Separate the evaporator temperature sensor connector (A), loosen the mounting screws and remove the eva