KT4 - Check IMRC Circuit For Short to Ground

- Key "OFF".

- Intake Manifold Runner Control System (IMRC) solenoid disconnected.

- Breakout box installed, Powertrain Control Module (PCM) disconnected.

- Measure resistance between test pin 32 and test pins 40, 46 and 60 at the breakout box.

- Is each resistance greater than 100,000 ohms?

Yes -- Go to KT5. KT5 - Check IMRC Circuit For Short to Power

No -- Service short circuit. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)