ECU Part Number ECM Diesel

The ECMD tab shows the Diesel Engine Control Module Nissan Identification part number. Basic and Advance Functions can be selected by clicking on the buttons. Most functions except Data Replay and Log Analyser are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Data Display ECM Diesel

Data Display window uses 6 gauges and 9 registers to display a real time information about the diesel engine. Parameters are assigned to gauges in the Data Display Settings window.

Data Logging ECM Diesel

Selected parameters can be logged to a file. This function can also be accessed from the Data Display window so the data can be logged while it is displayed. The data log file can be analysed using the Data Replay or Log Analyser functions.

Self Diagnostics ECM Diesel

Self Diagnostics function allows users to read and reset diesel ECU fault codes.

Active Test ECM Diesel

Active Test allows users to temporary modify some engine parameters for testing purposes. They return to their original values when the function is stopped, PC disconnected or engine restarted.

Note: It is possible to damage the engine Active Test functions are used incorrectly. Please do not use them if you are not sure how they will affect your engine.


Cylinder Power Test ECM Diesel

Cylinder Power Test function can be used to identify a cylinder that is under performing. This function allows shutting down individual cylinders. If all cylinders are producing the same amount of engine power than the engine RPMs will drop exactly the same amount as each cylinder is turned off.

Speed Test ECM Diesel

Speed Test is a unique function for measuring car's acceleration performance. Predefined or user specified tests can be performed. Due to the low resolution of Nissan speed sensors, measurements should only be used as a guide and not a true reflection of car's performance.

Note: This function should not be used while driving on public roads.

Work Support ECM Diesel

Work Support functions allow users to perform common advance service procedures. Those procedures may need to be performed after replacement parts are installed.

Config Clear - Initializes the ASCD application status.

DPF Data Clear - Should only be performed when DPF is replaced. Based on the signal from sensors ECM estimates the amount of particulate matter in diesel particulate filter and stores the value in EEPROM as diesel particulate filter data. When oxidation catalyst with diesel particulate filter is replaced with a new one, there is a difference between diesel particulate filter data stored in ECM and the actual amount of particulate matter in diesel particulate filter, because no particulate matter is trapped in new diesel particulate filter. In this case, ECM cannot perform regeneration control correctly. Do not perform this function if DPF is not replaced with a new one. Diesel particulate filter may be damaged because regeneration is not performed at appropriate timing.

Pump Leant Clear - In order to always keep optimum fuel pressure in fuel rail, the ECM controls fuel pump in high precision with monitoring the signal of fuel rail pressure sensor. Accordingly, the ECM always learns characteristic value of fuel pump. Fuel Pump Learning Value Clearing is an operation to clear the value of the fuel pump learning.

EGR Valve Learn Clear - EGR volume control valve closed position learning value should be cleared when EGR volume control valve is removed or replaced.

Injector Adjustment Value Clear - Initilaizes injector adjustment value stored in ECM.

Fuel injection quantity learning is performed to adjust fuel injection quantity deviated during the use of injectors under various conditions to properly adjust the injection quantity. If this learning is not performed, then malfunctions, such as knocking and poor acceleration may occur.


Injector Registration ECM Diesel

Injector adjustment Value Registration function allows users to display the current injector registration values and update them if needed.

Injector adjustment value indicates manufacturing tolerance and the value is printed on the top of fuel injector. The injector adjustment value which is correctly stored in ECM is needed for precise fuel injection control. A performance of emission control and a drivability may effect when there is a mismatch.


Log Analyser

Classic design

Modern design

Log Analyser is used to review log files previously generated by with Data Logging function. Graphs are drawn by selecting boxes next to parameter value. Graph colours match the parameter value colours.

Data Replay

Classic design gauges

Modern design gauges

Data Replay allows users to replay previously saved data logs. Replay can be speeded up or slowed down using the Replay speed scroll bar. The Position scroll bar moves the currently diplayed record up and down the log file.