ENGINE 158 EMS DIAGNOSTIC PROCEDURE 1] General The Engine Management System ECU controls the complete functioning of Engine. The Micro-controller inside the ECU, evaluates continuously the signal from the all the sensor. Based on this data the ECU controls parameters like air / fuel quantity. 1.1] Salient Features The Diagnostic tester software (Part No .2103 2262 99 37) for EMS ECU module has a capability to communicate with the ECU on a serial K-line interface. The Tester comprises a interface unit and custom built application software which is user friendly. The user can load it on laptop/Desktop PC. The interface unit is light weight and compact in size to facilitate easy portability. This works on vehicle battery supply. This tester will execute all the commands supported by ECU, which help in diagnostic of the EMS ECU system. This diagnostic unit is capable of performing the following functions 1) Read ECUData 2) Read Failure Codes 3) Clear Failure Codes 4) Read Sensor Data 5) Read EngineData 6) Read SystemData 7) ActuatorTest 8) Leak detection test 9) Replace System ● Read C2I data (Refered as I2C in other section) ● Write C2I individual ● Write C2I All ● Enter VIN data 2] Connection Details Required power supply:- Power supply for the Laptop/Desktop The Inter face Unit does not require any external power supply. It works on vehicle battery, provided through the OBD cable. Connect the RS232 cable to the Laptop/ Desktop COM port The OBD cable is connected to the Diagnostic connector of the wiring harness. 3] Specification 3.1] Laptop / PC Operating system :- WIN 2000 /WIN XP or later version CPU Speed :- Pentium 4 RAM :- 256 MB Video Display :- 800 x 600 resolution with 24 bit colour RS232 port : - Minimum 1No. CD ROM Drive Printer Port (optional) The software works with the above features of a Desktop/ Laptop PC. Any other combination of speed and RAM less then specified will slow down the response of the software. 3.2] Interface Unit Interface unit from M/s Silicon Engines, USA OBD cable RS232 cable
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