UENR0623-02 49 Engine Operation Power supply for the Glow plugs Illustration 46 g02381262 Typical example The ECM supplies 5 DC volts through the ECM connector to the glow plug control unit. The glow plug control unit controls the glow plugs. top center position in the normal direction of rotation. Boost Pressure – The difference between the turbocharger outlet pressure and atmospheric pressure is commonly referred to as boost pressure. The sensor for the intake manifold air pressure measures the amount of boost. i04802048 Glossary of Electronic Control Terms Breakout Harness – The breakout harness is a test harness that is designed to connect into the engine harness.
This connection allows a normal circuit operation and the connection simultaneously provides a Breakout T in order to measure the signals. Active Diagnostic Code – An active diagnostic code alerts the operator or the service technician that an electronic system malfunction is currently present. Refer to the term Diagnostic Trouble Code in this glossary. Bypass Circuit – A bypass circuit is a circuit that is used as a substitute circuit for an existing circuit. A bypass circuit is typically used as a test circuit. Aftertreatment – Aftertreatment is a system that is used to remove pollutants from exhaust gases.
The system consists of a Diesel Oxidation Catalyst (DOC) and a Diesel Particulate Filter (DPF). CAN Data Link (see also J1939 CAN Data Link) The CAN Data Link is a serial communications port that is used for communication with other microprocessor-based devices. Clean Emissions Module – The Clean Emissions Module (CEM) includes all the components of the engine aftertreatment system. Air-To-Air Aftercooler – An air-to-air aftercooler is a device that is used on turbocharged engines in order to cool inlet air that has undergone compression. The inlet air is cooled after the inlet air passes through the turbocharger.
The inlet air is passed through an aftercooler (heat exchanger) that uses ambient air for cooling. The inlet air that has been cooled advances to the inlet manifold. Code – Refer to Diagnostic Trouble Code . Cold Mode – Cold mode is a mode for cold starting and for cold engine operation. This mode is used for engine protection, reduced smoke emissions, and faster warm-up time. Alternating Current (AC) – Alternating current is an electric current that reverses direction at a regular interval that is reoccurring. Communication Adapter Tool – The communication adapter provides a communication link between the ECM and the Electronic Service Tool.
Before Top Center (BTC) – BTC is the 180 degrees of crankshaft rotation before the piston reaches the