KT3 - Check IMRC Circuit Continuity
- Key "OFF".
- Intake Manifold Runner Control System (IMRC) solenoid disconnected.
- Disconnect Powertrain Control Module (PCM). Inspect for damaged pins, corrosion, loose wires etc. Service as necessary.
- Install breakout box, leave PCM disconnected.
- Measure resistance between test pin 32 at the breakout box and IMRC circuit at the IMRC solenoid vehicle harness connector.
- Is resistance less than 5.0 ohms?
Yes -- Go to KT4. KT4 - Check IMRC Circuit For Short to Ground
No -- Service open circuit. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)