1990 Suzuki Swift GLXFACTORY OEM SERVICE PROCEDURE

Idle Speed Control (ISC) Solenoid (Sidekick)

  1. The ISC solenoid is mounted on throttle body. Turn ignition off. Disconnect 6-pin connector at throttle body.
  2. Using ohmmeter, measure resistance between Blue and Light Green/Black wire terminals of connector. If necessary, unlock and remove wire terminals from connector for easier access. Resistance should be 5.4-6.6 ohms at 68°F (20°C). Replace ISC solenoid if resistance is not within specification.
    CAUTION: DO NOT  apply battery voltage to ISC solenoid for more than one second. Wait 10 seconds before reconnecting battery voltage to ISC solenoid.
  3. To check ISC solenoid operation, remove ISC solenoid from throttle body. While observing valve through hole in flange, apply battery voltage to Blue wire terminal and ground Light Green/Black wire terminal. Note if valve operates. Replace ISC solenoid if defective.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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