Non-Monitored Circuits
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Powertrain Control Module (PCM) does not monitor all circuits, conditions and systems that could cause a malfunction or driveability problem. However, problems with these systems may cause PCM to store Diagnostic Trouble Codes (DTC) for other systems or components.
For example, a fuel pressure problem will not cause a DTC directly, but could cause a rich/lean condition or misfire which may cause PCM to store a DTC. The major non-monitored circuits are identified below.
- Cylinder Compression
- Engine Timing
- Excessive Oil Consumption
- Exhaust System
- Fuel Injectors
- Fuel Pressure
- Fuel Requirements
- PCM Connector Engagement
- PCM Grounds
- Secondary Ignition System
- Throttle Body Airflow
- Vacuum Assist