seat ibiza 03 no can bus lines to obd connector

**d.zio** · 24th May, 2011, 01:02 PM

hello to all mates
i have a seat ibiza 03 1800 turbo 20v

i have errors to all modules (vcds) can bus communication......
engine
dashboard
airbag
steering
abs
immobilizer
climate
...............the car starts properly but on the dashboard all the lights flashing.......tachometer speedo and the gauges works good......
i check to the obd for 60ohms to pin 6and 14 of can bus lines but i havent got.....i check for wiring cut behind the radio but the wires are good....(no cut)
what else have i to check????

**esrodi** · 24th May, 2011, 01:29 PM

What are you trying to do? Are there any dtc registered?

This car haven't got canbus lines on Obd connector, it only has k line.
On this car canbus is only for comunication between several control units, but not for diagnostics.

**d.zio** · 24th May, 2011, 01:35 PM

so if this you tell is true,why has wires to pins 6 and 14 to obd mate????????for beautiful????this car has can high and can low to obd......

**esrodi** · 24th May, 2011, 01:44 PM

OK, then I will consult the wiring diagram for this car. As I know the diagnosis is made only by k line.
I will try to find out about the CANbus in this car.

Regards.

**d.zio** · 24th May, 2011, 01:47 PM

the diagnosis made by k line....
but on obd has can......
i suppose that the problem is to body computer

**Liteace** · 24th May, 2011, 01:50 PM

Whats the engine code ????

**esrodi** · 24th May, 2011, 01:57 PM

Could you write here your vin and engine code?

**Liteace** · 24th May, 2011, 01:58 PM

It has got can on dlc, it goes from dlc > dianostics interface \ power distribution module > engine, dashboard, airbag, steering, abs, immobilizer, climate. you need to unplug all these one by one and see if you get coms back, have you got a scope you can check can high \ low from the DLC. Is the engine code BJX ??

**Liteace** · 24th May, 2011, 02:15 PM

A - Onboard supply control unit
Connector:
- XS1 - T6, 6-pin connector, (black)
- XS2 - T18b, 18-pin connector, (black)
- XS3 - T6w, 6-pin connector, (brown)
- XS4 - T18, 18-pin connector, (brown)
- XS5 - T6g, 6-pin connector, (red)
- XS6 - T16b, 16-pin connector, (black)

- XP1 - T6k, 6-pin connector, (black)
- XP2 - T6c 6-pin connector, (brown)
- XP3 - T6ad - 6-pin connector, (red)
- XP4 - T5, 5-pin connector, (black)
- XP5 - T5a, 5-pin connector, (brown)

**d.zio** · 24th May, 2011, 02:16 PM

bjx engine code......2006 model....sorry for my mistake(2003 model)

**esrodi** · 24th May, 2011, 02:22 PM

Pin 6 on obd comes from pin 6 of XS6-t16b and pin 14 on obd from pin 2. Check if all connectors are plugged correctly.

**d.zio** · 24th May, 2011, 02:23 PM

can i check something inside this for fix or go for other????new or second hand??

**Liteace** · 24th May, 2011, 02:39 PM

Originally Posted by d.zio

can i check something inside this for fix or go for other????new or second hand??

sound like connection problem, short to + or ground on can, water ingress somewhere or even a module playing up, on each connector you have only 2, 1 for can high 1 for can low. With a bit of investigation you should find the problem

**d.zio** · 24th May, 2011, 03:11 PM

now the customer told me the truth......he had the car to an other garage before two months..........they put to him an other body computer from polo he told me........but he had the same problem.....now he brought me the old one...i put it on the car and i have the same problem....
in my mind can i suppose something????if the the body is good(suppose) can the airbag unit do this problems if has water inside????