P2070

DTC P2070: Intake Manifold Tuning (IMT) Valve Stuck Open

Circuit Description
The Engine Control Module (ECM) operates a solenoid to control the Intake Manifold Tuning (IMT) valve solenoid electrical. The solenoid is normally closed. By providing a ground path, the ECM energizes the solenoid.

Conditions for Setting the DTC
- Ignition ON.
- No IMT valve position sensor fault exists.
- No IMT valve solenoid fault exists.
- Ambient temperature is greater than -9.75 degrees C (14.45 degrees F).
- Battery voltage is between 9.95 and 25.89 V.
- DTC P2071 is not set.
- IMT valve flap is not completely closed.

Action Taken When the DTCs Sets
- The Malfunction Indicator Lamp (MIL) will illuminate.
- The ECM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and Failure Records buffers.
- A history DTC is stored.

Conditions for Clearing the MIL/DTC
- The MIL will turn OFF at the end of 3 consecutive validation cycle in which the diagnostic runs without a fault.
- A history DTC will clear after 40 consecutive warm up cycles without a fault.
- DTC(s) can be cleared by using the scan tool.

Step 1 - 6:

DTC Troubleshooting