c4 picasso ABS/ESP and Parking bracke fault.

[GiveMeABreak]

The wires may 'look' good, but in order to check them, you really need a CAN Break Out Box to check the them.

[C4apolo]

Yes problem sloved. I disconnected the pneumatic suspension ecu. and everything works, ABS/ESP and handbrake. only suspension fault is still shown on the display. maybe it can be turned off somehow so that it doesn't exist. BSI is disabled, but the display shows nothing.
Thanks for help.

[C4apolo]

one small problem remains though. if the car stops for a while and the blocks go to sleep and then turn the ignition key and start, then a brake error is displayed and only ESP lights up, but when you turn off the ignition and start the car again, everything works and there are no errors. Couldn't it be related to when the BSI unit is looking for the air suspension ecu? how to fix it

[GiveMeABreak]

You may need to configure the BSI to ensure that Pneumatic Suspension and suspension ECU is absent - there may be several areas where this is mentioned.

[C4apolo]

All this to be done only in BSI block? I looked at BSI, it says ABSEND or no present everywhere. maybe i missed something

[GiveMeABreak]

Check for 'Height corrector', Suspension ECU etc and set these to absent.

[C4apolo]

nothing is shown about the air suspension. but the problem remains and after a long time when the car is stationary. when waking up, an error appears in the electric handbrake. U2219 and U1313, if the car does not go to sleep, the errors do not appear. Could it be when the battery needs to be changed? because when diagnosing the car, the economic mode wants to go

[GiveMeABreak]

Fault Code:	U1313
Description of Fault:	Fault in the reception of the partial triggering message by the built-in systems interface (BSI). The dynamic stability control ECU causes functional faults. Conditions of activation of the diagnostics Ignition on.
Conditions for Fault to clear:	Reception of 3 consecutive items of valid information
Downgrade Modes whilst Fault is active:	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. [*]Switching on of the warning lamp and/or warning message: Warning lamp - "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 Loss of stability of the vehicle in dynamic braking
Suspect Areas:	Electronic stability control (ESP) Electric parking brake

Fault Code:	U2219
Description of Fault:	Fault in the transmission of the message concerning the partial wake-up by the electronic parking brake: Coherence. Transmission of invalid information.
Conditions for Fault to clear:	-
Downgrade Modes whilst Fault is active:	No back-up mode. Switching on of the warning lamp and/or warning message: Warning lamp: - "a": Not on - "b": Not on - "c": Not on
Symptoms:	Illumination of LED/Error message Absence indicator light and/or warning 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:	CAN network Electronic stability control (ESP) Electric parking brake

You can refer to the Warning Lamp table on the previous pages that I put up before.

Economy mode will kick in if the battery is detected as being weak, so I'd make sure it is charged up to eliminate issues. ECUs will show faults if there is insufficient voltage.

[C4apolo]

the most interesting thing is when the car does not fall asleep, then everything works and there are no errors. If the car stops with the ignition off for 2 minutes, when you turn the ignition it shows when the brake is faulty. and these errors U1313 and U2219 turn off the ignition and turn it on again immediately, then everything works. if there was a can line, then I wonder when it won't work at all. all about awakening.
about the can line there is an error in the motor control unit U1118 and U1318. maybe you need to calibrate the abs sensors and the steering angle sensor, but why does turning the ignition key twice everything works, it's interesting