Check on the car
1. Check the resistance of the valve winding.
a) Disconnect the valve connector.
b) Using an ohmmeter, measure the resistance between the "+B" terminal and the terminals "ISC1", "ISC2" connector.
- Nominal resistance value (at 20°C) - 19-23 Ohm
If the resistance value is outside the specified range, replace the valve.
c) Connect the valve connector.
Removal the valve
1. Remove the throttle body.
2. Remove the idle speed control valve together with the gasket by unscrewing the mounting screws.
Checking the valve
1. Connect the jumper wire from the positive (+) terminal of the battery to the "+B" terminal and the (-) negative wire to the "ISC1" terminal of the valve connector and make sure that the valve actuator is closed.
2. Connect the connecting wire from the positive (+) terminal of the battery to the "+B" terminal and the (-) connecting wire to the "ISC2" terminal of the valve connector and make sure that the valve actuator is open.
(The article is taken from a web resource: «www.toyotaman.ru»)
If the valve operation is different from the description, first flush the valve and repeat the testing procedures. If necessary, disassemble the valve and eliminate the cause of jamming, otherwise replace the valve.
Installing the valve
1. Install the idle speed control valve.
a) Install a new gasket onto the throttle body.
b) Install the valve and tighten it with the mounting screws.
2. Install the throttle body. (See above).
