OBD (On Board Diagnostics) On Indian Cars...

[eapen]

ScanGaugeII - Trip Computers + Digital Gauges + Scan Tool

http://www.team-bhp.com/forum/modifi...t211692-4.html (Scan Gauge)

[eapen]

According this chart the OBD2 protocol used by Suzuki is ISO 9141 in many of their sub 2L models from 1996

http://www.etools.org/files/public/g...s-02-17-03.htm

I tried connecting to a 2003 Suzuki Wagon R 1.1L & 2005 Suzuki Baleno 1.6L. Even after forcing the ISO mode the unit switches off undetected after displaying the message "Connecting.........."

There also is a pin layout difference between Wagon R & Baleno in the DLC \ OBD2 Connector




From Scantool FAQ

DLC pins used :-

Wagon R
Pin 5 -ve
Pin 7 digital signal
Pin 16 +ve

Baleno
Pin 5 -ve
Pin 9 digital signal
Pin 16 +ve


If Baleno follows the ISO 9141 standard then Suzuki has not adhered to the ISO standard for OBDC II DLC, because as with Wagon R the digital signal out should be pin 7 & not pin 9


Does anybody know whether Scangauge II supports ISO 9141 standard or is compatible with Suzuki ECU coding?

[eapen]

Though the Suzuki has ODBII ISO 9141 standard it has only one digital
signal out -> K Line. It doesn't have K & L lines. Would this be the
issue?

I refered at [COLOR=#82b919]http://www.elmelectronics.com/connect.html[/COLOR].

There is ELM 323 chip which works for ISO standard & whose input can be modified to accept only K line.

[nicolsson]

anything that works with the sx4??

[spadival]

Originally Posted by eapen

Baleno
Pin 5 -ve
Pin 9 digital signal
Pin 16 +ve


If Baleno follows the ISO 9141 standard then Suzuki has not adhered to the ISO standard for OBDC II DLC, because as with Wagon R the digital signal out should be pin 7 & not pin 9

I think Baleno has GM OBD1 or OBD 1.5.. Basically only the physical connector is OBD II where as the wiring and the protocol is OBD I. See how the pin layout matches exactly with this cable for GM OBD I -> OBD Diagnostics, Inc. - ALDL (GM OBD1) Cable with 16 pin Connector




BUTTT, Even if we get the cable, with OBD I (or ALDL), almost every other ECU had different data streams coming out of PIN 9. I couldnt find ANY software out on the net that could interpret the data stream for Suzuki vehicles.. though I found some for non GM cars like Lotus. Some of the software allow you to provide a data stream definition file. But for this, you will have to decode whats coming out and create the definition file accordingly.

[swiftboost]

I think most of the Marutis (MPFI) do have the OBDII type connector but are pre-OBD for all practical purposes. And the problem with pre OBD is that, during that time frame none of the protocols were standardized. Manufacturers pretty much had something cooked up for their vehicles (my guess).
So, a generic OBDII tools like ELM scan etc. may not work for Marutis (I wonder if anyone has any wiring/shorting tweaks to get this working). The cars manufactured in the US after 1996 were OBDII compatible but in India - most MPFI cars (maruti) that came out even after 2000 were not OBDII compatible.
I guess, cars like SX4 (M series) engine might be compatible though.

[ashthedivx]

Originally Posted by eapen

I got a Scangauge II from US to use in my Suzuki Baleno.

After trying & searching for a while I found that it doesn't work for Maruti vehicles - anybody interested for fitting in American cars let me know.

Will it work with Chevrolet Optra ?

[spadival]

Originally Posted by swiftboost

I think most of the Marutis (MPFI) do have the OBDII type connector but are pre-OBD for all practical purposes.

Just a clarification, My post above refers to BSII Baleno's. It seems Baleno BS III is OBD II compliant (both connector and protocol), But the PID's are non-standard/Suzuki specific.

Originally Posted by ashthedivx

Will it work with Chevrolet Optra ?

No idea.. Keep in mind that its a re-badged Daewoo.. A Korean car rather than GM American one. You will have to trace its origins and see if ECU on it supports OBD II

[Absar]

Originally Posted by ashthedivx

Will it work with Chevrolet Optra ?

I think it SHOULD work. SG works on the Aveo. Chevrolet is American Breed, so it should work.

cya
A

[eapen]

Thanks 'spadival' for your interesting observation. So still nobody's clear regarding Baleno

[spadival]

Originally Posted by eapen

Thanks 'spadival' for your interesting observation. So still nobody's clear regarding Baleno

Which Baleno do you have? BS II or BS III.. If its BS III, there is some hope of someone figuring out the PID's for the Baleno's BS III ECU (BTW, these supposedly deviate from OBD II protocol standard).

If it is BS II, Its very clear that it is NOT OBD II.. This ECU is just too old to support OBD II. Admit it.. Our Baleno's come from a different era - both in terms of hardware and software!!

http://www.team-bhp.com/forum/techni...tml#post717839 (ECM Info for Phase 3 Baleno 1.6(should be similar for our version I hope))

[eapen]

My Baleno has the distributorless ignition with Dual Coil over spark plug (similair to Wagon R & Petrol Swift) wasted spark system. Its a 2004 August model

[swiftboost]

Any info on other ECMs (brand and model of car) that uses the same base hardware/architecture as Marutis ECM like Denso/others. Dont know if I have articulated the thought well. What I mean here is: eg- Eagle Talon (or whatever) uses the same base ECM (manufacturer/model) platform as the Maruti .... something on these lines. Though I think its a remote possibility .... but, you never know !!

[spadival]

Originally Posted by swiftboost

Any info on other ECMs (brand and model of car) that uses the same base hardware/architecture as Marutis ECM like Denso/others.

I don't think they share the same Hardware. Even within Suzuki, the ECU processors are different for different vehicles.. The info I got is that a Vitara ECU (Gypsy) has a MH6211 while the processor in the Baleno ECU is 68HC16. As technology progressed, I guess they kept upgrading the processor family used in the ECU.

Credits: Rhinoman's Portal . This chap has looked inside both of these ECU's and is in the process of disassembling the ROM !!

[Rajujey]

Hi Friends

Anybody got lucky in getting any Generic OBD scan tool working in Swift?
Scanguage II doesn’t work with Japanese swift also with Maruti swift.

What about Dashdyno spd or Dashhawk, ELM327 RS232 interpreter?

In Suzuki swift service Manuel (PDF). In page 52 it says about generic scanner.