Mixture Control Solenoid: Testing and Inspection

1. Disconnect electrical connector to IMA sensor at control box.
2. On Accord measure resistance between brown and green terminals of IMA sensor while turning adjuster. On 1985-86 CRX and 1986 Civic measure resistance between yellow and green terminals of IMA sensor. On 1987 Civic and CRX measure resistance between yellow/white and black wire terminals of IMA sensor.
3. If resistance is not between 250-620 ohms, replace IMA sensor.