Hi guys, although I joined the site a few years ago when I first got my Corsa C 1.0, this is my first post. I have a Corsa C 1.0 Easytronic. I’ve had the car since 2012. We had to do a little work on the Easytronic (usual flashing F problems!) to get it running initially (this was a long time ago, so if I recall correctly, I believe we had to bleed the clutch and relearn the parameters which was done by Vauxhall with a Tech2). Following this the car ran pretty much faultlessly until 2015 when I went to university and the car was SORN. The car has then sat on the driveway for the last three years. I have now finished university and have started looking into getting the car running again.
My father is an engineer and has been helping me with fixing the car.
I have an Opcom reader with 2007 PIC. When scanning the car we get two error codes:
P1735 – (0) Gearbox Parameters Not Learned – Present
P1732 – (8) Gearbox Geometry – Present
My understanding is that the TCU has lost its calibration of the gearbox, hence code P1735, and that to fix this I need to bleed the clutch, learn the touch points and relearn the gearbox parameters. However, I have stumbled into problems with this on the learning touch points phase and the relearn gear box parameters phase. Clutch has been bled with no problems.
Touch Point
When attempting to learn the touch point Opcom gets to step #7 before it says “Sequence error”.
When running the touch point adaption the select motor goes to 0mm, however the shift position goes to -8.98mm. However, we have removed and tested both the motors and whilst the brushes are a little worn, both work fine. Should the shift motor position be zeroing, or is this norrmal?
Relearn Gearbox Parameters
When attempting to relearn the gearbox parameters Opcom begins to attempt this but after a few seconds it says “Timed out… 0x17”.
These errors with the touch point and gearbox parameters have occurred despite using two different laptops running windows 10 and windows 7. We have used different versions of Opcom/Vauxcom and we have used a variety of Firmware versions for Opcom too. In spite of this, the same errors keep occurring.
Does anyone know how it would be possible to reprogram the easytronic gearbox without receiving these errors?
P1732 – Gearbox Geometry
With regards to the code P1732, we are not entirely sure what this entails. We speculate that it is either a red herring that has come about as a result of the TCU needing reprogramming. Or alternatively, it is perhaps a problem either with the clutch or shift motor position (as mentioned not zeroing); when running the clutch on/off test the clutch reads -0.38mm when off and 17.42mm when on. We have read on another forum that the tolerance for this should be 14mm, which obviously ours is not. This is of course just conjecture though. Perhaps someone knows more on this?
Sorry for the long post guys! I hope I’ve remembered to include everything I can. If there's any additional information that you'd like to know, just ask and I'll try to provide it! Thanks in advance for any help!
Kind regards,
jimmycheesebob
My father is an engineer and has been helping me with fixing the car.
I have an Opcom reader with 2007 PIC. When scanning the car we get two error codes:
P1735 – (0) Gearbox Parameters Not Learned – Present
P1732 – (8) Gearbox Geometry – Present
My understanding is that the TCU has lost its calibration of the gearbox, hence code P1735, and that to fix this I need to bleed the clutch, learn the touch points and relearn the gearbox parameters. However, I have stumbled into problems with this on the learning touch points phase and the relearn gear box parameters phase. Clutch has been bled with no problems.
Touch Point
When attempting to learn the touch point Opcom gets to step #7 before it says “Sequence error”.
When running the touch point adaption the select motor goes to 0mm, however the shift position goes to -8.98mm. However, we have removed and tested both the motors and whilst the brushes are a little worn, both work fine. Should the shift motor position be zeroing, or is this norrmal?
Relearn Gearbox Parameters
When attempting to relearn the gearbox parameters Opcom begins to attempt this but after a few seconds it says “Timed out… 0x17”.
These errors with the touch point and gearbox parameters have occurred despite using two different laptops running windows 10 and windows 7. We have used different versions of Opcom/Vauxcom and we have used a variety of Firmware versions for Opcom too. In spite of this, the same errors keep occurring.
Does anyone know how it would be possible to reprogram the easytronic gearbox without receiving these errors?
P1732 – Gearbox Geometry
With regards to the code P1732, we are not entirely sure what this entails. We speculate that it is either a red herring that has come about as a result of the TCU needing reprogramming. Or alternatively, it is perhaps a problem either with the clutch or shift motor position (as mentioned not zeroing); when running the clutch on/off test the clutch reads -0.38mm when off and 17.42mm when on. We have read on another forum that the tolerance for this should be 14mm, which obviously ours is not. This is of course just conjecture though. Perhaps someone knows more on this?
Sorry for the long post guys! I hope I’ve remembered to include everything I can. If there's any additional information that you'd like to know, just ask and I'll try to provide it! Thanks in advance for any help!
Kind regards,
jimmycheesebob
