New Jawa made in India by Classic Legends brings new subcontractors and new components than Czechoslovakian Jawa with well-known parts from AutoPAL Nový Jičín or Jikov České Budějovice etc.
Today I would like to focus on diagnostics connection to Jawa 300 CL (the model year 2020). Since it's a new motorbike there must be a modern communication standard used and it is, you can find there the OBD2 EURO5 6-pin diagnostic connector known as ISO/DIS 19689.
Diagnostics socket can be found under the lid on the left side of the motorbike close to the fuse box. There is a socket splitting into two connectors. The red one is a diagnostic socket marked on the label as Spark Minda MTWL WIRING VEHICLE DIAGNOSTIC-1 cust. part no. T1501RKW0050N. What I love the most is the type mark "Minda part. no SAMPLE Rev:1" as completely useless information.
Funny observation: this diagnostics plug is just an extension cable from another socket which heavily reassemble Yamaha OBD2 4 pin connector BUT there is "opposite sex socket" and actually different central protection key, so it can't be used.
Let's focus on pin-out and function:
This red diagnostics connector cable has 3 input cables
- black (picture as solid green)
- position: left down (3)
- meaning: GND
- red+black (picture as black with white stripe)
- position: right top (4)
- meaning: +12V
- yellow+black (picture as orange with white stripe)
- position: left top (6)
- meaning: K-Line - ISO 9141
Let's check the other side of the connector because it has 4 input cables with all the mentioned colors plus yellow+blue wire. One wire is lost in that Minda extension cable.
Don't get confused: Jawa specific OBD2 settings is visible on this video with preproduction Jawa Perák model visible because we see on video that there is used CAN BUS standard (ISO 15765-4) which is different from single wire K-line (ISO 9141) solution. There is also 6-pin motorbike socket on the video with different color scheme in the description which leads into conclusion of different plug standard used on Perák compared to the 300 CL or the 42.
So let's connect 300 CL to the computer: I am expecting you to want to connect on a standard 16-pin OBD2 diagnostics socket. Put plus pin to number 16 and minus to pin number 4. The data wire is plugged into pin number 7 known as "ISO9141 K-LINE". That's all - three wires are enough.
I was connecting with a very basic ELM-327 chip car diagnostic device connected into a computer with ScanMaster ELM software, but you can use also Bluetooth diag for connection to your Android phone. Just try it before on some other vehicle (suitable car) if it actually works.
The protocol for connection to Jawa 300 CL is ISO 14230-4 (KWP FAST) with baud rate 38400. That's all that you need to know. You can see RPMs and other data, which might be useful if you are debugging idle speed since the European version is quite sensitive for their levels.
Dobrý den, existuje způsob, jakým lze přes diag zvednout volnoběžné otáčky tak, aby motorka nechcípala na volnoběh při dobržďování na křižovatku? Tady už to bohužel není na šroubek, jako na starých Jawách... Děkuji a zdravím, P. Horák
OdpovědětVymazatZřejmě tato možnost takto není, ale (moje) Jawa nechcípe,když se do ní lije prémiové palivo. Vyzkoušejte a dejte vědět :)
VymazatDěkuji za odpověď. Zatím jen sonduju, uvažuji o pořízení, ale zatím nejsem úplně přesvědčený. Dle všeho, pokud jede na KKL kabelu, nebude vytáhnutí sw z ecu problém. Pokud běží na KKL, obdobně jako auta z roků výroby 1995-2000, neměl by být problém se do toho dostat, určitě bude v ecu možnost najít dle kanálů přizpůsobení i volnoběžné otáčky (možná půjde i VAG COM?). Ale nerad bych do toho hned vrtal, když je to nový stroj a má to nějakou záruku a garanci na bezproblémovou funkčnost.
VymazatIts not connecting on bs4 model's
OdpovědětVymazatCan you help me
zdravím,šroubek na volnoběh jsem našel,přitáhl,a jawa nechcípe.
OdpovědětVymazatHallo,
OdpovědětVymazatich möchte bei meiner Jawa 300CL eine Ganganzeige montieren. Kann dazu die Diagnosebuchse verwendet werden?
Ahoj,
Chtěl bych na svou Jawu 300CL namontovat ukazatel řazení. Lze k tomu použít diagnostickou zásuvku?
Ahoj,
OdpovědětVymazatChtěl bych na svou Jawu 300CL namontovat ukazatel řazení. Lze k tomu použít diagnostickou zásuvku?
Hi, I am quite sure that basic diagnostic devices are engine only. I didn`t see advanced Jawa value readings which would include gearbox data if there are any.
OdpovědětVymazatBut 300 CL does not need a shift indicator in my opinion. Latest in few hundred kilometers of riding you recognize gear by the hearth. The especially first gear has different mechanical and acoustic feedback.
Thanks for the answer. I would still like to mount this display. Where could I get the signal?
OdpovědětVymazatThe engine idles at about 1500 RPM. Is that correct?
OdpovědětVymazatMohu odečíst otáčky na řídící jednotce Jawa CL300? Tachometr na zapalovací cívce mi ukazuje jen poloviční otáčky.
OdpovědětVymazat