Diagnosis And Testing - 6.4L - MDS Solenoid
WARNING: This page is about a different variant/trim than selected.
The Multi-Displacement System (MDS) has the following detectable issues:
- Solenoid circuit
- Fail to deactivate a cylinder(s)
- Fail to reactivate a cylinder(s)
- Low oil pressure
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| MDS does not activate | 1. Low oil pressure | 1. Check for proper oil pressure |
| 2. Bad oil temperature sensor | 2. Replace the oil temperature sensor | |
| - | 3. Malfunctioning MDS solenoid | 3. Replace the MDS solenoid |
| - | 4. Malfunctioning MDS lifter | 4. Replace lifter(s) |
| MDS does not deactivate | 1. Low oil pressure | 1. Check or proper oil pressure |
| 2. Bad oil temperature sensor | 2. Replace the oil temp sensor | |
| - | 3. Malfunctioning MDS solenoid | 3. Replace the MDS solenoid |
| - | 4. Malfunctioning MDS lifter(s) | 4. Replace lifter(s) |