Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

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perfidus
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Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

Hello,
I'm starting this topic because I need help with some issues and error codes. My Citroen van is a BB furgon from 2016, chassis VIN number is VF7**************[VIN obfuscated, can be read by forum staff].
Especially need to sort out some weirdo things that showed up after scanning my "new" Jumper van with Diagbox 7.83 (and the same with 9.68 Free).
I'm using a Lexia interface full chip FW 921815C , recently purchased from this shop: https://www.aliexpress.com/item/1005007009192418.html?

So, I have Instrument panel ECU communication trouble and Airbag ECU communication trouble. What can cause that?
As I mentioned in my first post, the van was converted into a camper and I suspect that some wiring may be affected.
First thing noticed - passenger seat belt tensioner and switch is disconnected from the yellow harness underneath but there are no warning lights on the instrument panel.
The second - although the engine has a few errors and check engine message on the display, the Check engine warning light is off.
I can say that it was forced OFF by someone to pass the inspections, the light doesn't come ON at ignition ON.
I need to check also the airbag light, as I said there is no indication of a fault with Airbags.
The instrument cluster is working fine, no signs of tampering on the other lights, but I will return with a picture of the panel at ignition ON maybe someone will observe anything odd.
Any suggestions for a starting point?
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by wheeler »

Are you using the Fiat adapter with diagbox?
If not you won’t get comms with all ECUs
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

No i don't. Thank you for your suggestion/confirmation, I was afraid that this is the case, the software asked for the switch on the adapter to be "in position B".
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by wheeler »

You need one of these
Attachments
IMG_8017.jpeg
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by wheeler »

What is the issue with the airbags then?

Its not uncommon if the van is being converted to a camper that the middle seat is removed. If a resistor is not used in place of the old seat belt pre tensioner it will cause an airbag fault .
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

Thanks. The factory passenger seats are moved in the back behind a table and the front seats are rotating type, the one of the front passenger being exactly the same as driver seat. Noticed the yellow connector underneath - îs not being wired to the floor harness.

EDIT: I see the point of your question, airbag may be OK (the van has only one driver airbag) - the problem is with one seatbelt pretensioner, the front passenger's one is not connected. When I'll succeed to connect with Airbag ECU I will see what is missing/in error.
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

Waiting for the PSA S.1279 Interface to arrive, i bumped into this topic:
viewtopic.php?p=772678#p772678
So for example, if your vehicle provides key messages via the head unit and you have an aftermarket system, then it won't be able to communicate issues to the driver. So you are on dodgy ground to start with
My campervan also has a dumb aftermarket 1 DIN unit (but I don't know what equipment was fitted at the factory, if any) - could it be possible to affect the dashboard warning lights?
I think I asked before - is there any source of information to find the original equipment of the van with the VIN number?
Without the adapter it appears to be two more modules that can't communicate. But i doubt that those modules are corect (such as Blind Spot Monitoring left and right)
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by GiveMeABreak »

If you're asking what radio equipment you had from factory, then the answer is none! It only came with 4 speakers, but no radio.

Here's you build sheet from factory:
Vehicle Characteristics
Vehicle familyRELAY III
AS/RP N°14483
Warranty Start Date02/09/2016
Engine serial number10 DYZZ 4012521
OPBJ0ZI
BERe3*2007/46*0046*11
General Information
PRODUCT TYPECOMMERCIAL VEHICLE
COMMERCIAL MARQUE/COMPONENT TYPECITROEN
VEHICLE FAMILYRELAY III
SILHOUETTEEXTENDED VAN H3 TYPE 16H
TRIM LEVELSTANDARD
ENGINEDW10FUC FAP DIESEL
TRANSMISSIONBVM6
PAINT TYPENON-METALLIC PAINT
BODY COLOUREWP - BANQUISE WHITE PAINT
INTERIOR TRIM TYPECLOTH DARKO + TWILL "35"
UPHOLSTERY COLOUR"FX"
GEARBOX (CHARACTERISTICS)BVM6 MLGUC14
CONVERSION GUIDANCEWITHOUT CONVERSION
DEFINITION TO FOLLOWMID-LIFE
ENGINE (TYPE)EW/DW
Vehicle Characteristics
TRIM LEVELSTANDARD
PAINT TYPENON-METALLIC PAINT
BODY COLOUREWP - BANQUISE WHITE PAINT
INTERIOR TRIM TYPECLOTH DARKO + TWILL "35"
UPHOLSTERY COLOUR"FX"
GEARBOX (CHARACTERISTICS)BVM6 MLGUC14
STEERINGVARIABLE POWER STEERING
SPEEDOMETER DRIVETACHO TORQUE 18X14
Fuel Supply-Engine
ENGINEDW10FUC FAP DIESEL
FUELDIESEL GRADE DA/DE/DE+
ENGINE (TYPE)EW/DW
CAPACITY2000 CM3
VEHICLE EMISSIONS STANDARD (TYPE APPROVAL)DEPOLLUTION EURO6 (HOMOLOGATION)
CRANKCASE GAS CIRCUIT HEATINGWITH HEATER CASING GAS CIRCUIT
PARTICLE FILTERWITH PARTICLE EMISSION FILTER
STOP AND STARTWITHOUT STOP AND START
Gearbox Transmission
TRANSMISSIONBVM6
GEARBOX (CHARACTERISTICS)BVM6 MLGUC14
FINAL DRIVE RATIOCP 14 X 75
SPEEDOMETER DRIVETACHO TORQUE 18X14
WHEEL (TYPE)STEEL WHEELS
INFLATION PRESSURE LOSS INDICATORWITHOUT TYRE DEFLATION INDICATOR
GEARBOX TYPEMLGU6 MANUAL GEARBOX
Suspension-Steering-Brakes
STEERINGVARIABLE POWER STEERING
TRACTION CONTROLANTISLIPPING
SUSPENSIONDOUBLE-LEAF RR HEAVY DUTY SUSPENSION
SUSPENSION (ARCHITECTURE TYPE)METAL SUSPENSION
DYNAMIC STABILITY CONTROL SYSTEMELECTRONIC STABILITY PROGRAM
EMERGENCY BRAKING ASSISTANCEWITH EMERGENCY BRAKING ASSISTANCE
Body Fittings
TOWBARWITHOUT TOWBAR
AERIALLONG ROOF AERIAL
SKIPW/O FLAT HAMPER
CABINCLOSED SINGLE CAB
CHASSISSTANDARD CHASSIS
PAYLOADHEAVY PAYLOAD 16Q
SIDE MOULDINGS (TYPE)LATERAL PROTECTOR MASS TINTED
EXHAUST TAILPIPELEFT-HAND SIDE
INDICATORSLONG VEHICLE SIGNALLING LIGHT
ADDITIONAL SHIELD (UNDER ENGINE)W/O ENGINE UNDERSHELDING
EXT. REARVIEW MIRROR COMP. FUNCTIONEXT MIRROR MANUAL-FOLD BACK
OPENING OF MOVING PANELDOOR OPENING AT 270 DEGREES
WINDSCREEN WIPERFRONT WIPER BLADE W/O RAIN SENSOR
HEADLAMP WIPERW/O HEADLAMP WIPER
SIDE LOAD DOORRH SLIDING SIDE METAL DOOR
BUMPERDYED FRONT/REAR BUMPER
MUDFLAPWITHOUT MUDGUARD
ROOFSTANDARD ROOF PNL
LUGGAGE RACKWITHOUT ROOF BARS
FRONT FOGLAMPNO FRONT FOG LIGHTS
EXTERIOR REAR VIEW MIRROR (PASSENGER SIDE)PASSENGER ELECTRIC DOOR MIRROR
SPARE WHEEL MOUNTINGSTANDARD SPARE-WHEEL CARRIER
WHEEL EMBELLISHER (TYPE)WHEEL TRIM WITHOUT CUSTOMER CHOICE
BODY CONVERSIONWITHOUT
REAR WINDOW (TYPE)WITHOUT REAR WINDOW
GLASS (APPEARANCE)TINTED
WINDOW (TYPE)LAM W/SCREEN + SIDE + RR TOUGHENED
SIDE WINDOW (COMM. VEH. ONLY)WITHOUT SIDE WINDOW
ROW 3 SIDE WINDOWWITHOUT SIDE WINDOW 3ND ROW
HANDS FREE ACCESS AND STARTINGNO ACCES AND HANDSFREE STARTING
Interior Fittings
INTERIOR TRIM TYPECLOTH DARKO + TWILL "35"
ANTI-THEFT ALARMWITHOUT THEFT PROTECTION ALARM
REAR SEATWITHOUT REAR SEAT POSITION
SUPPLEMENTARY SEATWITHOUT SUPPLEMENTARY SEAT POSITN
CABIN SEAT2 PLACES PASSENGER BENCH
CIRCUIT BREAKERWITHOUT BATTERY CUT-OFF
CLIMATE (AMBIENT TEMP)COLD COUNTRIES
SPEED GRADUATIONSSPEED GRADUATION IN KM/H
DRIVING POSITIONLEFT-HAND DRIVE
REMOTE CONTROLREMOTE CONTROL ASSEMBLY
ADDITIONAL HEATINGWITHOUT ADDITIONNAL HEATING
FRONT HEAD RESTRAINT (STYLE)OPEN FRONT HEAD RESTRAINT
TIMERWITHOUT TACHOGRAPH
RADIO CONTROLSWITHOUT REMOTE RADIO CONTROL
SIDE DOOR CONTROL MECHANISMNON-MOTORIZED, ELECTRIC LOCKING SIDE DOOR
FRONT PASSENGER SEAT HEIGHT CONTROLWITHOUT FRONT PASSENGER SEAT HEIGHT ADJUSTMENT
DRIVER SEAT CONTROLDRIVER SEAT MANUAL CONTROL
FRONT PASSENGER SEAT CONTROLPASSENGER FRT SEAT MANUAL CNTR
FRONT SEATWITH DRIVER’S SEAT
DRIVER SEAT ADJUSTMENTDRIVER’S LUMBAR ADJUSTMENT
FRONT PASSENGER SEAT ADJUSTMENTWITHOUT FRONT PASSENGER’S SEAT ADJUSTMENT
FRONT SEAT ARMRESTFITTING WITH DRIVER’S FRONT ARMREST
STOWAGE BINWITHOUT SETTING BOX
SATELLITE NAVIGATION SYSTEMWITHOUT NAVIGATION SYSTEM
TRAFFIC INFORMATION READERWITHOUT LATERAL TRAJECTORY MONITORING
OPENING OF MOVING PANELDOOR OPENING AT 270 DEGREES
MISC. INT. ACCESSORYDOCUMENT HOLDER TABLE
HEATING ELEMENTNON HEATED SEAT
FRONT LATERAL AIRBAGWITHOUT FRONT SIDE AIRBAG
PASSENGER AIRBAGNO PASSENGER AIRBAG
ADDITIONAL AIR CONDITIONINGWITHOUT ADDITIONAL AIR CONDITIONING
EXTERIOR REAR VIEW MIRROR (HEATED)HEATED DOOR MIRROR
REAR MOVING PANEL2 REAR HINGED METAL DOORS
SIDE LOAD DOORRH SLIDING SIDE METAL DOOR
COURTESY LAMPFR+RE DOORS CONT - FR+RE INTERIOR LAMP
FRONT SEAT GUARDREMOVABLE CAB PROTECTION PANEL
RADIO RECEIVER4 SPEAKERS WITHOUT RADIO RECEIVER
REFRIGERATIONSINGLE AIR CONDITIONING
CRUISE CONTROLREGULATOR AND SPEED LIMIT
DRIVER’S SEAT HEIGHT CONTROLFR + RR DRIVER HEIGHT ADJ
REAR VIEW MIRRORSSTANDARD REAR VISION
DRIVER AIRBAGDRIVERS AIR BAG
INTERIOR PROTECTIONMID-HEIGHT INTERIOR WALLS PROTECTOR
OBSTACLE DETECTION SYSTEMWITHOUT OBSTACLE DETECTOR
INFLATION PRESSURE LOSS INDICATORWITHOUT TYRE DEFLATION INDICATOR
LOCKING CONTROLNORMAL + AUTOMATIC LOCKING
REAR WINDOW (TYPE)WITHOUT REAR WINDOW
WINDOW (TYPE)LAM W/SCREEN + SIDE + RR TOUGHENED
SIDE WINDOW (COMM. VEH. ONLY)WITHOUT SIDE WINDOW
STEERING WHEELSTANDARD STEERING WHEEL
PASSENGER SEAT PACKBENCHSEAT WITH 3-POINT CENTRAL BELT
SUPPLEMENTARY HEATERWITHOUT ADDITIONAL HEATING
AUDIO PACK AUXILIARY SOCKETWITHOUT AUDIO PACK AUXILIARY SOCKET
Electrical
CIRCUIT BREAKERWITHOUT BATTERY CUT-OFF
BATTERY (FITTING)UPPER BATTERY
REMOTE CONTROLREMOTE CONTROL ASSEMBLY
STARTER MOTORCLASS 6 STARTER MOTOR
SPECIAL LIGHTINGFRONT DAY RUNNING LIGHT (DRL)
INDICATORSLONG VEHICLE SIGNALLING LIGHT
EXT. REARVIEW MIRROR COMP. FUNCTIONEXT MIRROR MANUAL-FOLD BACK
COURTESY LAMPFR+RE DOORS CONT - FR+RE INTERIOR LAMP
FRONT FOGLAMPNO FRONT FOG LIGHTS
Component Manufacturers
Miscellaneous
SPECIAL SPECIFICATIONSTANDARD
DRIVING POSITIONLEFT-HAND DRIVE
RADIO HEADPHONE SOCKETWITH ACCESSORIES SOCKET
PLATEWITHOUT PLATFORM FLOOR
SET OF KEYS1 HIGH FREQUENCY REMOTE CONTROL KEY+1 MAIN KEY ONLY
COUNTRY ADAPTATIONWITHOUT
EMERGENCY EQUIPMENTW/O HELP EQUIPMENT
SURFACE CONDITIONSGOOD TERRAIN
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Marc
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

Great, thank you!
So, no Blind Spot Monitoring as expected:
TRAFFIC INFORMATION READER - WITHOUT LATERAL TRAJECTORY MONITORING

Another thing that i must check:
FRONT FOGLAMP - NO FRONT FOG LIGHTS
There are some Foglamps in the front bumper but I nerver found the ON/OFF button, it is not on the hazard switch panel.
They are aftermarket then.
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by GiveMeABreak »

So just to clarify: Lateral trajectory monitoring is actually Lane Departure Warning System, not Blind Spot Monitoring.

Active Blind Spot Monitoring usually includes additional sensors in addition to the front & rear parking sensors, The Blind Spot system has an additional 4 sensors, 2 on the front and 2 at the rear usually on the wheel arches facing outwards to detect passing objects.

As for fogs, these are referred to as 'complimentary Headlight kit' and if factory fitted (which weren't from factory in your case) will be located here:
perf fog.png
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

Got the adapter for Jumper III, put it on the Lexia interface and the results are the same! See picture.
IMG_20240712_193135_072.jpg
One interesting fact, the SW version in the ECU is from 2017, the car is from 2016. I think someone did something in the past.
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by GiveMeABreak »

Software version for what ECU?

It's not unusual for ECU software to be updated, like the BSI or the engine ECU to fix issues after the car was built. This can happen when it is dealer-serviced and you may not be aware.

Second, despite what the ad says on Aliexpress, I wouldn't trust them as far as I could throw them regarding being a full-chip kit. I've seen it here before where people have bought from those places and they ended up with a cut down version with missing hardware on the boards. It may be that or a connection / pin issue, but I'd be returning it and getting one from a trusted source.
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

By ECU version i mean the engine ECU, DCM62_F
Regarding Lexia interface i hope you're wrong, the store has a high rating and the price was also above average, got it open and seems for me like the full chip version.
IMG_20240713_232543_406_114425.jpg
IMG_20240713_232331_428_114502.jpg
IMG_20240712_204936_513_120417.jpg
IMG_20240712_201918_406_120534.jpg
IMG_20240713_232638_889_114247.jpg
IMG_20240713_232710_914_114221.jpg
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by GiveMeABreak »

Most of the parts seem ok - except for the 10k Resistor that seems missing highlighted in yellow where it is supposed to be. This can affect CAN communication.
10k res missing.png

Although (3) seems present, (1) & (2) don't:
vci b.png
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Re: Citroen Jumper III 2016 (Euro6) - Instrument panel and Airbag ECUs communication errors

Post by perfidus »

Very good observations, much appreciated.
It is a chance the missing parts to be the cause. R1 R2 in last picture are from the USB part of the interface, though.
But the next step I see is to check the wiring to airbag ECU and dashboard instrument panel, it's strange that the rest of ECUs are responsive, I could check and clear errors, do some actuator tests, read live data etc.
It can be a protocol not correctly implemented in Lexia (firmware?) , i'm going to dig the forum for more info about versions.
I might need also some 'heavy tools' such as updated schematics (what I have is from Boxer III Euro 5) and an oscilloscope.

ANYWAY...
Luckily the engine runs verry well, it have a new EGR (the old one was leaking coolant and I found some intermittent errors in engine ECU memory) and the only error is the DPF (P242F 97), is broken by the last owner and needs to be changed.
But beside this there is an Airbag/seatbelt issue, and the associated lights (that somebody else turn off by brute force).
Regarding AdBlue system (that seems deleted) there are more to mention and perhaps I will open a new topic.
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