You will need: a Phillips-head screwdriver, a tester.
1. Press the lock of the wiring harness connector…
2. …and disconnect the connector from the idle speed control valve.
3. Remove the two screws securing the regulator to the throttle assembly…
4. …and remove the regulator from the throttle body hole.
Note: Please note: the connection is sealed with a rubber ring 1.
Note: Do not attempt to pull or push in valve 2 of the regulator as this may damage the regulator.
5. Switch the tester to the ohmmeter mode and measure the resistance between terminals "A" and "B" of the regulator, and then between terminals "C" and "D". The resistance should be within 0.040–0.080 kOhm.
Note: There are no terminal markings on the idle air control valve body, but their locations can be determined by the corresponding markings on the wiring harness connector.
6. When replacing the regulator with a new one, pay attention to the distance L between the end of the valve needle and the mounting flange - it should be no more than 23 mm. If this distance is greater, the regulator needle will rest against the seat of the throttle assembly and when tightening the mounting screws, the regulator will be damaged.
7. Before installing the regulator, clean the seat and air channel in the throttle assembly, as well as the surface under the regulator sealing ring, from dirt.
8. Lubricate the O-ring with engine oil and install the regulator in the reverse order of removal. Tighten the regulator mounting screws to a torque of 3–4 N·m.