Caution: To check if the idle speed control valve is working, put your hand on the valve. When the engine is running, the valve should vibrate from power pulses.
Withdrawal
Six-cylinder engine: Detach the air intake hose from the throttle valve connection after loosening the clamp.
Disconnect the connector -2- of the idle speed control valve while pressing the wire lock. Loosen hose clamp -arrows-, detach hoses -2- and -3-. The illustration shows a four-cylinder engine, on a six-cylinder engine the valve is located under the intake manifold.
Four-cylinder engine: Remove cable retaining strap -4-.
Release the idle speed control valve from the mounting and pull it out.
Resistance test
Six-cylinder engine: Connect an ohmmeter to the valve terminals and measure the resistance. Set value: terminals 1 and 3: 40±5 ohms. terminals 2 and 1 or 2 and 3: 20 + 5 ohm.
Four-cylinder engine: The valve has only 2 contacts. Connect Connect an ohmmeter to the valve contacts and measure the resistance. Set value: 8 + 2 ohms.
Dynamic Check
Connect the power connector.
Fully open or close the rotary valve piston.
Turn on the ignition. The rotary piston should take up a position of approximately 50% of the transverse bore and remain in that position.
Installation
Connect the hoses to the idle speed control valve.
Put on the connector and fix the wire.
Six-cylinder engine: Connect air intake hose and secure with tape.