Variable Intake-Air System (VIS) Control Solenoid Valve Inspection

VARIABLE INTAKE-AIR SYSTEM (VIS) CONTROL SOLENOID VALVE INSPECTION

1. Remove the VIS control solenoid valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)







2. Inspect airflow between the ports under the following conditions.
- If not as specified, replace the VIS control solenoid valve.
- If as specified, carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection




1. Disconnect the PCM connector.
2. Inspect the following wiring harness for open or short (continuity check).

Open circuit

- If there is no continuity, the circuit is open. Repair or replace the harness.
- VIS control solenoid valve terminal B (harness-side) and PCM terminal 4R
- VIS control solenoid valve terminal A (harness-side) and main relay terminal C (harness-side)

Short circuit

- If there is continuity, the circuit is shorted. Repair or replace the harness.
- VIS control solenoid valve terminal B (harness-side) and body GND
- VIS control solenoid valve terminal A (harness-side) and power supply