Uttam S Sharma
in partial fulfillment for the award of the degree
BACHELOR OF ENGINEERING in AUTOMOBILE ENGINEERING
SRIRAM ENGINEERING COLLEGE, CHENNAI – 602024.
ANNA UNIVERSITY: CHENNAI 600 025
This paper presents implementation of simple system for remote diagnostic of
vehicle defects. Implementation process includes diagnostic trouble codes defined in
existing standards . Presented application is client/server application and the paper
presents functionality and algorithms. The communication link between the client
and server is established using mobile phone.
In this electronic age the use of microprocessor and sensor in automobile have
become vital .ECU which controls several sensor also has issues .The issues are non
operational and malfunctioning of sensor due to irregular service and operation of
vehicle . In the smart car these errors in the sensor are received as error codes to the
user thus preventing short term and long term damage of the vehicle.
GSM-Global System for Mobile operates by sending signal to the prescribed dial
number . It is connected to the ECU (Engine Control Unit) of the vehicle through
the CAN network . The sensor operations are monitored by the microcontroller ,
programmed accordingly to send signal . The signal is send to the gsm board while
an error is deducted which inturn will send the text message with the error to the
5. The Atmel 8-bit AVR RISC
combines 32 kb ISP
Flash memory with read
while write capabilities .
6. The ELM327 is a
translating the on
interface found in the
Using programming and modern day electronic device the vehicle is turned
smart enough to rectify its errors and enable hassle free Operation to the user.
This reduce the workload of technician and also save money caused by the
 Shinich Hayashi, Shinji Fukuda, Toru Osada, Masahiko Ogai,
"Overview of TOYOTA MOTOR CORPORATION's GBOOK Service and
FUJITSU TEN's Engagement with its Special In vehicle Terminal,"
FUJITSU TEN TECHNICHAL JOURNAL, No.23, pp.32-36, 2004.
 Ford Sync: http://www.ford.com/technology/sync/about/
 Onstar by GM: http://www.onstar.com/web/portal/home
 Diagnostic Trouble Code Definitions Equivalent to ISO/DIS 15031-6,
SAE Standard J2012, 2002.
 E/E Diagnostic Test Modes - Equivalent to ISO/DIS 15031-5, SAE
Standard J1979, 2002.
10.  Diagnostic Connector Equivalent to ISO/DIS 15031-3, SAE
Standard J1962, 2002.
 C. E. Lin, Y.-S. Shiao, C.-C. Li, S.-H. Yang, S.-H. Lin, C.-Y. Lin,
"Real-Time Remote Onboard Diagnostics Using Embedded GPRS
Surveillance Technology," IEEE Trans. on Vehicular Technology, Vol.
56, No. 3, pp. 1108-1118, May 2007.
 C. E. Lin, C. C. Li, S. H. Yang, S. H. Lin; C. Y. Lin, "Development
of On-Line Diagnostics and Real Time Early Warning System for
Vehicles," in Proc. IEEE Sensors for Industry Conference, pp. 45-51,
 NMEA data. Available: http://gpsinformation.org/dale/nmea.htm
Roy Cox, "Introduction to OBD-II," Cengage Learning, 2005.