c4 picasso ABS/ESP and Parking bracke fault.

[C4apolo]

Hello. maybe someone can help with info. All these errors appeared when the parking brake was calibrated. and since then abs and parking brake do not work.I can set the parameters with the diagnostic Launch tester, but can't because show message Programming Fault appears. tried to change the parking brake module with the cable, it doesn't even change anything. The brake calipers are good, one new one was installed
the errors shown in the blocks are:
Electric parking brake:
U1213 Flaut: Absence Of Communication With The ESP ECU. Incorrect Value Received
ABS/ESP ESP81:
C1398 Programming Fault (Incorrect Configuration Of Vehicle). Coherence
U1219 Fault Automatic Release Of The Electric Parking Brake. Data Invalid
ECU:
U1312 Intersystems CAN Error In Length Or Prohibited Value On The BSI Datastream
Air Suspension faults. but there is only a block on the car and no air suspension or it has been removed
C118E
C112A
C1126
C1128
C112F
wires visually checked in weak sections, they look good and are not corroded. Any ideas what to do? look for the circuit diagram and check the CAN lines? or try to reconfigure it with Diagbox?
Thanks in advance if anyone can give good advice.

[GiveMeABreak]

I'll need your VIN to relate the codes to your specific vehicle (please post your VIN in full without spaces - it will be automatically masked from public view after submitting your post & will only be visible to staff).

[C4apolo]

VF7**************[VIN obfuscated, can be read by forum staff] Year: 2010 Engine Type: RHE

[GiveMeABreak]

So your vehicle originally came with normal front suspension and Hydropneumatic suspension at the rear. So if the pneumatic units have been removed, somebody has converted it back to standard struts and springs, which is why you are getting the configuration errors.

It may be now that since you have gone in to try and configure or calibrate the parking brake, that it has triggered off these errors again as the car still thinks you have pneumatic suspension fitted at the rear.

Fault Code:	U1213
Description of Fault:	Fault - absence of communication with the stability control (ESP) ECU: Value received incorrect. The ESP ECU sends out data that is invalid or information that is too short.
Conditions for Fault to clear:	Reception of 3 consecutive items of valid information.
Downgrade Modes whilst Fault is active:	Possibility 1 - Deactivation of automatic mode - Ignition on : The electrically controlled parking brake releases if the button is not held - Ignition off : The electrically controlled parking brake releases if you hold the button for less than 3 seconds Possibility 2 - Deactivation of the hill start assistance - Dynamic braking by the electric parking brake Warning lamp: (See Image) - "a" : lit - "b" : Not on - "c" : lit
Symptoms:	Illumination of LED/Error message Electrically-controlled parking brake does not apply correctly Electrically-controlled parking brake releases unexpectedly Electrically-controlled parking brake does not release correctly Electrically-controlled parking brake applies itself unexpectedly The hill start assist is not working
Suspect Areas:	Brake pedal switch Electronic stability control (ESP)

Fault Code:	C1398
Description of Fault:	Configuration fault (Configuration of the vehicle incorrect) : Coherence. The time for recording the fault code is approximately 100 milliseconds after the ESP ECU is supplied. Incorrect configuration of the ESP ECU
Conditions for Fault to clear:	Correct configuration of the ESP ECU
Downgrade Modes whilst Fault is active:	Immediate cutting of all the speed control functions The electronic brakeforce distribution function is in down-grade mode Hill start assistance function inactive Switching of the electric parking brake to manual mode Switching on of the warning lamp and/or warning message: ESP/ASR indicator lamp ABS indicator lamp Electric parking brake automatic functions deactivation warning lamp SERVICE indicator lamp Warning lamp for handbrake, brake fluid level and brakeforce distribution malfunction Imperative stop warning lamp
Symptoms:	Lighting of the ABS and ESP warning lamps
Suspect Areas:	Incorrect configuration of the ESP ECU

U1219: Communication with the Electric Handbrake ECU : Value received incorrect
C118E: Programming of the heights not carried out : Inconsistent value
C112A: Exhaust electrovalve : Short circuit to earth or open circuit
C1126: LH spring electrovalve : Short circuit to earth or open circuit
C1128: RH spring electrovalve : Short circuit to earth or open circuit
C112F: Compressor temperature sensor supply : Short circuit to positive or open circuit

[C4apolo]

Thanks for the info. then comes when you have to put back the pneumo system in the back? for abs/esp and automatic handbrake to work? Is the system configured correctly?

[GiveMeABreak]

No.

Many people have had problems with the pneumatic cushions / socks on this system with them wearing prematurely from the hear of the exhaust system / rubbing and some other issues, so people have fitted standard shocks and springs instead.

To do this they would have to reconfigure the BSI and remove / disable the suspension ECU, so that the BSI is not constantly looking for communication with it.

Obviously I can't comment on what has been done with regards to your vehicle specifically, but it seems the BSI is still looking for communication with the suspension ECU and it's not getting any data from it (as it has likely been removed or disabled).

The systems are interlinked (BSI, Engine ECU, ABS / ESP ECU (which also controls the handbrake ECU) so this can impact other systems when a part of the puzzle is missing.

I can't advise you on what to do here - you would need to speak to somebody or a garage that has completed the retro-fit operation to restore standard rear suspension (Shocks and Springs) to see if they can advise what needs to be configured in the BSI.

It may just be a matter of configuring the BSI to show the Pneumatic rear suspension as absent / not present, but I can't say for sure.

[C4apolo]

this car was already bought like that and now I found out when it had a pneumatic system.
the whole problem started when the rear brake caliper had to be replaced and the electronic handbrake had to be recalibrated.
could it be that until the pneumo system is not turned off in the bsi block, all the other errors will also be present? abs/esp and automatic parking brake won't work?
I can try to configure the BSI block with Launch, I just need to know where to turn off what. ECU presents or in some other place too?

[GiveMeABreak]

I can't help you with 'Launch' as I only use Diagbox.

You don't have motorised calipers on your rear brakes. The EPB just uses an electronic unit to pull and release cables that operate on the rear calipers. However the EPB needs to be put in 'Service Mode' when working on the calipers to allow enough slack on the cables and access.

When complete you need to carry out:

• Carry out the handbrake cables packing procedure using a diagnostic tool.
• Carry out the electric parking brake calibration procedure using a diagnostic tool.
• Activate the electric handbrake control.
• Check the immobilisation of the wheels.

If this isn't done correctly, you will get an ESP / ABS fault from the main ESP ECU (as this is the master ECU and controls the EPB Slave ECU).

I'd ignore the other faults as this may just be what your diagnostic tool is picking up as a result of the missing pneumatic system. Focus on getting the procedure correct for the Electronic Handbrake and hopefully this will clear up the ESP fault.

[C4apolo]

I don't understand that citroen. I scanned all the errors and then deleted them all and the remaining ones are still there
Engine:
U1118
U1318
BSI:
040A
098B
Anti-lock Bracke System
C1398
U1219
Electric Power Steering
U1105
Engine wiring Housing
098B
Air Conditioning
P0739
Pneumatic Suspension
C118E
C112A
C1126
C1128
C112F
Electric Secondary Brake
U1213
The handbrake has been calibrated several times, but there are no errors. the automatic handbrake does not work and the ABS ESP STOP Service and another brake lamp lights up on the panel.
what do you recommend?

[GiveMeABreak]

I think you have something else going on here - as there are too many data / comms faults and as I said, if the CAN wiring is compromised it can cause multiple faults in other systems.

I suggest you trace back whatever has been done and check if the mechanics have cut or damaged any wiring. All 'U' faults will be comms / data faults and somewhere along the line there is an issue affecting the other systems.

Fault Code:	U1105
Description of Fault:	Speed of rotation of the steering wheel information fault: No signal. The information on steering wheel rotation speed is absent. The information from the steering wheel angle sensor has not been received
Conditions for Fault to clear:	-
Downgrade Modes whilst Fault is active:	-
Symptoms:	-
Suspect Areas:	Flywheel angle sensor CAN network

[C4apolo]

I think when some CAN network is a problem. do you have a can network wiring diagram for this car? I have found some but I am not sure if they match the car. I will try to understand tomorrow.

[GiveMeABreak]

I'll put up the ABS / ESP and the EPB Diagrams, because the diagrams are system-specific and I can't put them all up.

CAN Wiring

Z14A : CAN+ supply
9000U : High Intersystem / Can bus
9001U : Low Intersystem / Can bus
9000 : High Intersystem / Can bus
9001 : Low Intersystem / Can bus
9024A : comfort data high CAN bus
9025A : comfort data low CAN bus
9011F : Low Intersystem 2 Can bus
9010F : High Intersystem 2 Can bus
9017B : body high speed CAN bus
9018B : body low speed CAN bus
9024D : comfort data high CAN bus
9025D : comfort data low CAN bus


ESP Diagram



Electric Parking Brake

[GiveMeABreak]

I've added some of the CAN wiring for you. ^

[C4apolo]

Thank you very much. the thick black ones are can networking wires?

[C4apolo]

checked these can wires. everything is ok and the wires look good. I don't even know what to watch next.
9000U : High Intersystem / Can bus
9001U : Low Intersystem / Can bus
9000 : High Intersystem / Can bus
9001 : Low Intersystem / Can bus
9017B : body high speed CAN bus
9018B : body low speed CAN bus