CBR-2360 202404

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Chassis Equipped With VECU5 Active
Datalink/Communication Faults For Multiple
Modules; ABS And SRS Communication Faults
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Internal Content
Corrective Action
Verfy in VDA parameter P1SEQ is set to FALSE.
1. The technicians perception of P1SEQ is that the parameter
controls the LVD Device. The LVD Device is controlled by the LECM,
these are two different components that are not related.
2. P1SEQ is set false from the factory, after the technician changes
the status from false to true with Tech Tool(Parameter
Programming) the fault codes will become active when condition
are met to open relay20.
3. When P1SEQ is enable and when the conditions are met (low
voltage for 120s) the VECU commands RELAY20 to power off, that
causes the ECU's on that circuit to produces fault codes. ABS, VDS,
SRS…..
4. The technician will spend unnecessary time diagnosing the Active
Data Link fault codes caused by relay 20 being opened due to
condition met in the P1SEQ.
REF - SR # 1-17946047891
Published 2 aPRIL 2024
Valid For
Mack GR,PI,AN Volvo VNL,VNR,VNX,VAH,VHD Model Years 2021 - 2024
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If the list of codes below are found to be active please create an E-Service
case and reference this CBR solution number.
This combination of codes is caused by a software configuration issue
not visible in Tech Tool.
Vehicles Equipped with GEN 2 Instrument Cluster
Module
Code
EMS
U012100
EMS
U041500
Description
Lost Communication with Anti-Lock Brake System
(ABS)
Invalid Data Received from ABS module
TECU U012900
Lost Communications with Brake Control Unit
TECU U114286
Wheel-Based Vehicle Speed Signal Invalid
IC - GEN
2
IC - GEN
2
U101887
Lost Communication with SRS, Missing Message
U104287
Wheel-Based Vehicle Speed, Missing Message
IC - GEN
Can Protocol SAE 1939 Message EBC1 Timeout Lost
U104987
2
Communication
VECU U024387
Lost Communication with ABS Missing Message
VECU U103F87 ACC Status Electronic Data Link Missing Message
Vehicles Equipped with GEN 1 Instrument Cluster
Module
Code
Description
EMS
U012100
Lost Communication with Anti-Lock
Brake System (ABS)
EMS
U041500
Invalid Data Received from ABS
module
TECU
U012900
Lost Communications with Brake
Control Unit
TECU
U114286
Wheel-Based Vehicle Speed
Signal Invalid
Information display (MID PSID 243
140) IC - GEN 1
FMI 9
DATA Link, MID204
Information display (MID PSID 242
140) IC - GEN 1
FMI 9
DATA Link, MID248
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Information display (MID PSID 211
140) IC - GEN 1
FMI 9
DATA Link, MID219
Information display (MID PSID 204
140) IC - GEN 1
FMI 9
DATA Link, MID136
VECU
U024387
Lost Communication with ABS
Missing Message
VECU
U103F87
ACC Status Electronic Data Link
Missing Message
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Tags
mack
volvo
p1seq
u012100
u101887
u104287
u104987
u103f87
mid 204 psid 243 fmi 9
u114286
u024387
mid 248 psid 242 fmi 9
mid 219 psid 211 fmi 9
mid 136 psid 204 fmi 9
mid 216 psid 204 fmi 9
u041500
u012900
vecu5
Categories
Make and Model > Mack > CXU/CHU/PI - Pinnacle
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Make and Model > Volvo > VNL
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Make and Model > Volvo > VNR
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Make and Model > Volvo > VNM
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Make and Model > Volvo > VNX
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Make and Model > Volvo > VAH
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Make and Model > Volvo > VHD
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Make and Model > Mack > MRU/TE - TerraPro
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Vehicle System > Control Systems
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Make and Model > Mack > AN - Anthem
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Make and Model > Mack > GU/GR - Granite
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