Advanced Diagnostics

Advanced Diagnostics - DTC P065E: Intake Manifold Tuning (IMT) Actuator Circuit Malfunction

General Description






The intake manifold tuning (IMT) actuator is controlled to open/close the IMT valves by the engine control module (ECM)/powertrain control module (PCM) to output high torque at any engine speed range. When it is in low engine speed, the IMT valve is closed, and when it is in high engine speed, the IMT valve is opened. When the ECM/PCM detects an abnormal return signal or abnormal current from the IMT actuator, the ECM/PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
Either one of the conditions is met:
- Open circuit failure
The return signal from the IMT actuator is HIGH for at least 2 seconds while the current is not applied to the IMT actuator.
- Short circuit failure
Over current from the IMT actuator continues for at least 0.4 second while the current is applied to the IMT actuator.

Possible Cause

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

- IMT actuator line open
- IMT actuator line short to ground
- IMT actuator line short to power
- IMT actuator SVSP line short to IMT actuator SVSM line
- IMT actuator motor short
- ECM/PCM internal circuit failure

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the ECM/PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC and the freeze data are stored. The MIL does not come on.

Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.