Ford Transit 2002 Owner's Manual page 1149

Diagnostic trouble code.
Vehicle speed.
Engine coolant temperature.
Engine speed.
Engine load.
Mixture formation trim value (trim value for engine wear) (All except vehicles with diesel
engine).
State of oxygen sensor control (open/closed loop) (All except vehicles with diesel
engine).
Distance covered since the concern was first registered.
Monitors
The purpose of the monitors is to continuously check the operation of the emission related
sensors and actuators. It then establishes if they are operating within specified tolerances.
All monitors carry out their functions in such a way as to be unnoticeable by the driver of
the vehicle. Each one is carried out under specific conditions of load, speed and engine
temperature. On petrol variants, the Comprehensive Component Monitor, Combustion
Misfire Monitor and Air/Fuel Ratio Monitor operate continuously. The remaining monitors are
only invoked under certain operating conditions. On diesel variants, all of the monitors
operate under normal driving conditions: There are no monitors which intervene and cause
special operating modes to enable the monitors to work. Some diesel monitors are non-
continuous. This means that in a drive cycle, monitoring is done as and when suitable
driving conditions exist and potential faults are accumulated and compared with acceptance
criteria. Examples of this type are the turbocharger boost pressure and Exhaust gas
recirculation (EGR) monitors on vehicles with common rail fuel injection.
Comprehensive Component Monitor (CCM)
When the CCM detects a component operating out of tolerance, it sets a Diagnostic Trouble
Code (DTC), which is stored in the KAM. If the same concern is confirmed during the next
trip the MIL will be switched on. The CCM monitors many components, sub-systems and
signals. The following is a list of those that can effect emissions depending on application:
Electronic Ignition (EI) System
Crankshaft Position (CKP) signal
Ignition Coil
Camshaft Position (CMP) signal
Air Conditioning (A/C) Clutch
Idle Air Control (IAC).
Mass Air Flow (MAF)
Manifold Absolute Pressure (MAP) sensor
Intake Air Temperature (IAT)
Engine Coolant Temperature (ECT)
Cylinder Head Temperature (CHT)
Charge air temperature sensor
Throttle Position (TP)
Vehicle Speed Sensor (VSS) signal
Boost Pressure Sensor
Cam-Crank Phasing Sensor
Keep Alive Memory (KAM)
High pressure fuel injection pump
Exhaust gas recirculation (EGR) valve lift potentiometer
Fuel injectors
Turbocharger
Combustion noise monitor
Barometric pressure sensor
Combustion Misfire Monitor (All except vehicles with diesel engine)
The combustion misfire monitor operates independently of the others, and can detect
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