When Monitored And Set Conditions
- During a transition from 4 to 8 cylinder mode.
Set Conditions:
- The MDS fails to disengage for cylinder 4.
Default Actions:
- MIL is illuminated on the second consecutive trip that the diagnostic fails.
| Possible Causes |
|---|
| MDS SOLENOID 4 CONTROL SHORT TO VOLTAGE |
| OIL PASSAGES RESTRICTED |
| LIFTER |
| MDS SOLENOID 4 |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .