ESP/ASR system faulty?
Moderator: RichardW
ESP/ASR system faulty?
I have a DS3 Style hd90 2010 which is showing the 'ESP/ASR system faulty message in the warning log and we are having trouble trying to identify the fault.
When the car is connected to a vehicle diagnostics tool the message that is returned from the ABS ECU is:- 'Steering wheel angle status interpreted by the ESP - Failure detected' and another one 'Steering wheel angle sensor signal fault coherence - Permanent fault' I have taken off the ABS pump/ECU and had the unit tested and it passes OK but ABS Reman could see but not reset the fault code as the component providing the fault was not connected, I only took the steering stalks switch gear containing the Com2000 with the ABS pump/ECU to them. We understood the Com2000 contains the steering angle sensor and this tests OK.
The fault code can't be reset and the steering calibration shows the steering angle of the wheels on the diagnostic tool. I have replaced the switch stalks/Com2000 and tried another unit and neither effected this fault code. I wish to avoid taking any further components from take the ABS pump, switch gear and steering rack back to them.
The tyres are all the same make and size, the tracking has been completely reset and is even on both sides.
Other than the warning text and lamp on the dashboard, the car drives perfectly but the ESP is disabled and cant be turned on/off.
I thought I would ask if anyone here has any ideas please?
When the car is connected to a vehicle diagnostics tool the message that is returned from the ABS ECU is:- 'Steering wheel angle status interpreted by the ESP - Failure detected' and another one 'Steering wheel angle sensor signal fault coherence - Permanent fault' I have taken off the ABS pump/ECU and had the unit tested and it passes OK but ABS Reman could see but not reset the fault code as the component providing the fault was not connected, I only took the steering stalks switch gear containing the Com2000 with the ABS pump/ECU to them. We understood the Com2000 contains the steering angle sensor and this tests OK.
The fault code can't be reset and the steering calibration shows the steering angle of the wheels on the diagnostic tool. I have replaced the switch stalks/Com2000 and tried another unit and neither effected this fault code. I wish to avoid taking any further components from take the ABS pump, switch gear and steering rack back to them.
The tyres are all the same make and size, the tracking has been completely reset and is even on both sides.
Other than the warning text and lamp on the dashboard, the car drives perfectly but the ESP is disabled and cant be turned on/off.
I thought I would ask if anyone here has any ideas please?
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Re: ESP/ASR system faulty?
That sounds like the steering wheel angle sensor is not calibrated properly and cannot be done off vehicle. It’s a pity you didn’t come here first, as taking off the components individually won’t really help. The faults have to be properly diagnosed with everything in the vehicle using Diagbox and cannot be done in isolation as a rule.
I would of suggested the best course of action was to of completed a full diagnosis with Diagbox and then reported the faults back here. As I said, it may just of meant recalibration the steering wheel angle sensor, which can be done with Diagbox. I would still suggest you go ahead and do this. If you don’t have access to the VCI and Diagbox yourself there is a list of members here willing to help out.
Look at the list here - at the bottom is a link to a Google map that shows the locations members on the map.
Lexia Locations
I would of suggested the best course of action was to of completed a full diagnosis with Diagbox and then reported the faults back here. As I said, it may just of meant recalibration the steering wheel angle sensor, which can be done with Diagbox. I would still suggest you go ahead and do this. If you don’t have access to the VCI and Diagbox yourself there is a list of members here willing to help out.
Look at the list here - at the bottom is a link to a Google map that shows the locations members on the map.
Lexia Locations
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Marc
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Re: ESP/ASR system faulty?
Hi, Topherg, my concern is "The tyres are all the same make and size, the tracking has been completely reset and is even on both sides" did both track rod ends get adjusted or just the one? Also "even on both sides" is not necessarily correct and is hard to measure, it only needs to be out a little to knock the ABS/ESP off. Also, from personal experience the steering angle senor unit is sensitive and can easily be put back wrong once you have taken it off and will have to be reset.
Marc is right about the steering angle sensor not being able to be set stationary, with the Diagbox connected you have to drive in a straight line for about 200-300 yards minimum, this is so the car knows, from information from the wheel sensors that it is going in a straight line, then once it knows the sensor can be reset from with in the diagbox.
Marc is right about the steering angle sensor not being able to be set stationary, with the Diagbox connected you have to drive in a straight line for about 200-300 yards minimum, this is so the car knows, from information from the wheel sensors that it is going in a straight line, then once it knows the sensor can be reset from with in the diagbox.
Stu
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Major interventions
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4 discs & Pads @ 63,585 mi
2 (AM6) oil exchanges @ 58,876 & 72,378 mi
Re: ESP/ASR system faulty?
We have looked to re-calibrate the steering angle sensor whilst the car is moving and not just when it is stationary. The steering angle sensor is reporting accurately and is displaying the correct angle of the wheels. The sensor tests OK. The fault in the ABS ECU cannot be cleared.
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Re: ESP/ASR system faulty?
Ok so what are the ABS ESP fault codes displayed in Diagbox?
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Marc
Marc
Re: ESP/ASR system faulty?
These are the fault descriptions we have seen as in my original post:- 'Steering wheel angle status interpreted by the ESP - Failure detected' and 'Steering wheel angle sensor signal fault coherence - Permanent fault' This was read from a X431 Diagnotic tool and Wurth WOW diagnostics. There are no fault codes - just the text.
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Re: ESP/ASR system faulty?
I thought as much, those generic messages won’t really help any. It needs Diagbox to properly diagnose the system and then I can provide some further possinbilities as to what to check from the proper codes.
Is there anyway you can get it read with a Lexia and Diagbox?
Is there anyway you can get it read with a Lexia and Diagbox?
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Marc
Marc
Re: ESP/ASR system faulty?
I have now changed the Yaw sensor and this didn't clear the fault and the code from the diag tool is: C1136 Steering Wheel angle sensor signal - Coherence - Permanent. The diag tool allows you to delete the codes but for this one, it doesn't even temporarily disappear, the sw does its cycle and the code is displayed again when it has done. My next plan after reading the other comments above is to buy the Lexia kit and see what this does. Any further observations please?
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Re: ESP/ASR system faulty?
I'll need your VIN to double check the data, but the C1136 fault states the following:
So this would indicate the steering wheel angle sensor is near or in the the power steering setup - is this what you replaced? Also is there anything you have changed recently equipment wise - have you made any changes to the car - added any third party electrical equipment or anything that could interfere with th vehicle electrics?
Fault code | C1136 |
After sales description of the fault code | Steering wheel angle sensor fault |
Description of the diagnostics | Coherence fault |
Conditions of activation of the diagnostics | The value of the offset of the steering wheel angle is greater than 15° |
Conditions of disappearance of the fault | The following conditions have to be met - After switching the ignition off and then back on - When driving above 11 km/h |
Down-grade modes if fault present | Cutting of all ESP operations |
Switching on of the warning lamp and/or warning message | Warning lamp ESP |
Main customer complaints likely | Lighting of the ESP warning lamp with error message |
Suspect areas | Interference Steering wheel angle sensor integral to the electric power steering |
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Marc
Marc
Re: ESP/ASR system faulty?
We understood the steering angle sensor is in the Com2000 switch gear unit on the top of the steering column and this is what has been replaced. No other changes or additions to the vehicle were made. So far we have avoided working on the steering rack as the subframe will need to be removed to get this off the car.
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Re: ESP/ASR system faulty?
Yes, I appreciate that - I would of expected it to be under the Comms unit too - it's just odd in that description of the fault -
I believe some vehicles had a different type of sensor - but I can't tell you for sure without the VIN. Most newer vehicles since 2001 have had the sensor in the Comms unit.Steering wheel angle sensor integral to the electric power steering.
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Marc
Marc
Re: ESP/ASR system faulty?
The VIN is VF7**************[VIN obfuscated, can be read by forum staff]
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Re: ESP/ASR system faulty?
Yes so it should be in the comms unit. So the procedure using Diagbox accessed fromt he ABS/ESP ECU is required to calibrate it.
There are some points of note if fitting a replacement Comms unit, that I will put up later - as I have to go out now.
There are some points of note if fitting a replacement Comms unit, that I will put up later - as I have to go out now.
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Marc
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Re: ESP/ASR system faulty?
My question is 'are the brakes working ok?' i.e. does the brake pedal creep down under light pressure, if it does then the ABS needs secondary bleeding with the diagnostics gadget, this was the cause of the ESP/ABS warning light showing on my C5 when I first got it.
There's a thread about it on here somewhere.
Here:
viewtopic.php?f=3&t=58737&p=553888&hili ... o#p553942
There's a thread about it on here somewhere.
Here:
viewtopic.php?f=3&t=58737&p=553888&hili ... o#p553942
Man is, by nature, a lazy beast, he does not need twice encouraging to do nothing.
Re: ESP/ASR system faulty?
There has never been a problem with the ABS or brakes and since the pump was taken off for diagnostics it has all been bled through.