Test Description

The numbers below refer to the step number in the diagnostic procedure.

1. 2
   
   Listen for an audible click when the Intake Manifold Tuning (IMT) solenoid operates. Command both the ON and OFF states. Repeat the commands as necessary.
2. 4
   
   This step verifies that the Engine Control Module (ECM) is providing a ground to the IMT solenoid.
3. 5
   
   This step tests for an open in the battery positive voltage circuit to the IMT solenoid.
4. 6
   
   This step tests if the voltage is constantly being applied to the IMT solenoid control circuit.