Engine Warm-Up Mode
WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
This is an OPEN LOOP mode. The following inputs are received by the PCM:
- Manifold Absolute Pressure (MAP)
- Crankshaft position (engine speed)
- Engine coolant temperature
- Inlet/Intake air temperature (LAT)
- Camshaft position
- Knock sensor
- Throttle position
- A/C switch status
- Battery voltage
- Vehicle speed
- Speed control
- O2 sensors
The PCM adjusts injector pulse width and controls injector synchronization by turning the individual ground paths to the injectors On and Off.
The PCM adjusts ignition timing and engine idle speed. Engine idle speed is adjusted through the idle air control motor.