P0660

DTC P0660: Intake Manifold Tuning (IMT) Valve Solenoid Control Circuit

Wiring Diagram:

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.
- An open condition in the IMT valve solenoid circuit exists.

Action Taken When the DTC Sets
- The Malfunction Indicator Lamp (MIL) will illuminate.
- The ECM will record operating conditions at the time the diagnostic fails. The 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 a consecutive ignition 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.

Diagnostic Aids
An intermittent problem may be caused by a poor connection, rubbed-through wire insulation, or a wire that is broken inside the insulation.

Step 1 - 6:

Step 7 - 9:

DTC Troubleshooting