Eclipse L4-1997cc 2.0L DOHC Turbo (1990)
Idle Speed Control (ISC) Servo Resistance Test
2. Using an ohm meter, check the resistance between terminals 2 and either 1 or 3.
Resistance
28 - 33 Ohms @68°F
2. Using an ohm meter, check the resistance between terminals 5 and either 6 or 4.
Resistance
28 - 33 Ohms @68°F
Idle Speed Control (ISC) Servo Operation Test
3. Using a 6 VDC power supply, apply Voltage to terminals 2 and 5.
4. While holding the servo as indicated in the image, connect the negative terminal of the supply to each pair of terminals in the order given below.
The servo should vibrate when the ground circuit is supplied.
a. Connect the negative power supply to terminals 3 and 6.
b. Connect the negative power supply to terminals 1 and 6.
c. Connect the negative power supply to terminals 1 and 4.
d. Connect the negative power supply to terminals 3 and 4.
e. Connect the negative power supply to terminals 3 and 6.
f.
Perform the tests in reverse order from step e to a.
5. Replace the servo if does not vibrate during each test.
