CBR 2516-6 202601 Service Bulletin/Repair Instructions

1/30/26, 7:51 AM
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Article
Preview Solution CBR-2516-6

CMS Black Screen Troubleshooting - VN

(4) - PR (4) - AN (4)

Published 2aJanuarya2026
Valid For

Volvo Chassis - VN (4)

Mack Chassis - PR (4) - AN (4)

Model Year - 2025 to Current
The purpose of this CBR is to provides guidance on identifying problems with the

Camera Monitoring System Black Screen and Permanent Red Warning Pop up.

To assistain troubleshooting the CMS system, please reference this CMS
Troubleshooting Guide.a
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CMS Black Screen Troubleshooting

November 2025
CMS Black Screen and CMS IC warning

Troubleshooting
Abstract

This CBR solution provides guidance on identifying problems with the Camera Monitoring

System Black Screen and Permanent Red Warning Pop up.

Content

Published 18 December 2025

Valid For

Volvo VN(4) model year 2025 to current.

MACK Pioneer, Model year 2025 to current.

The purpose of this CBR is to provide guidance and solutions for troubleshooting the Camera

Monitoring System Black Screen and Permanent Red Warning Pop Up
1
CMS Black Screen Troubleshooting

November 2025
Contents

1
Abbreviation, required tools, ECU pinouts & work sheet..........................................................3

1.1
ææŘôŽĖÍťĖĺĲŜϙÍĲîϙîôƱĲĖťĖĺĲŜϡ .......................................................................................3
1.2
Required tools ..............................................................................................................4
1.3
ECU connector and pinout view ....................................................................................5
1.4
VOLVO VN4 – Camera Monitoring System (CMS) Work Sheet ..........................................6
2
Description of issue ..............................................................................................................7
3
Fault Codes ..........................................................................................................................8
4
3.1
Fault codes – INACTIVE .................................................................................................8
3.2
Fault Codes – ACTIVE ..................................................................................................10
Wiring .................................................................................................................................14

4.1
Fault tracing and corrective actions .............................................................................14
4.1.1
Driver camera wiring ...............................................................................................14
4.1.2
Passenger camera wiring.........................................................................................18
4.1.3
Curb (Class V) passenger camera wiring ..................................................................22
4.1.4
Driver and/or Passenger display wiring .....................................................................25
4.2
Full harness instructions .............................................................................................28
4.3
Overlay instructions....................................................................................................28
4.3.1
ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͐ϡϙīÍŜŜϙIIϯI«ϙĺŽôŘīÍƅϙϼ„bϭϙ͓͓͑͏͗͑͑͘ϽϙĖĲŜťÍīīÍťĖĺĲ ........................ 28
4.3.2 ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͑ϡϙVŪıŕôŘϙFÍŘĲôŜŜϙ"ŘĖŽôŘϙŜĖîôϙϼ„bϭϙ͔͖͗͐͏͔͑͒ϙѭϙ«IbϙĲŪıæôŘϽϙĺŘϙ

VŪıŕôŘϙFÍŘĲôŜŜϙ„ÍŜŜôĲČôŘϙŜĖîôϙϼ„bϭϙ͔͖͗͐͏͔͓͑ϙѭϙ«IbϙĲŪıæôŘϽϙĖĲŜťÍīīÍťĖĺĲ .......................... 34

4.3.3
ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͒ϡϙīÍŜŜϙ«ϙiŽôŘīÍƅϙϼ„bϭϙ͓͓͑͏͗͐͒͘ϽϙĖĲŜťÍīīÍťĖĺĲ ........................... 46
4.3.4
ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͓ϡϙÍıôŘÍϙÍŘıϙŘôŕīÍèôıôĲť .......................................................͓͘
2
CMS Black Screen Troubleshooting

November 2025
Troubleshooting CMS Black Screen and Red Warning Pop up

Note: Do NOT clear fault codes at this time.
1 Abbreviation, required tools, ECU pinouts & work sheet

1.1 Abbreviations ÍĲîϙîôƱĲĖťĖĺĲŜ:

CMS – Camera Monitoring System (Digital Mirror System)

ECU – Electronic Control Unit

PTT – Premium Tech Tool

MDS – Maintenance Disconnect Switch

Class II/IV - Driver and Passenger side cameras

Class V – Passenger Side or curb view camera

Jumper Harness – Camera Cable/Connectors in between In Cab Overlay and Wing

Cables/connectors

In Cab Overlay – CMS Display and Camera Cable harness containing the following

connectors (Class II/IV ECU side, Class V ECU side, Class II/IV

Permanent black Screen

Temporary Black Screen

Permanent Red Pop up

Temporary Red Pop up

Picture overview of the overhead shelf to be added by David
3
CMS Black Screen Troubleshooting

November 2025
1.2 Required tools
4
CMS Black Screen Troubleshooting

November 2025
1.3 ECU connector and pinout view
5
CMS Black Screen Troubleshooting

November 2025
„īôÍŜôϙƱīīϙĺŪťϙťēĖŜϙſĺŘħŜēôôťϙæôċĺŘôϙĺŕôĲĖĲČϙÍĲϙ‹‡ϙèÍŜôϙĺŘϙîĖÍČĲĺŜĖŜϙ
1.4 VOLVO VN4 – Camera Monitoring System (CMS) Work Sheet

Please complete the following information to submit to the SR case. Ensure all sections

are filled out accurately and screenshots are attached where required.

VIN: ______________________________________

Active Fault Codes:

Inactive Fault Codes:

Customer Complaint:

Can Complaint Be Duplicated:

Ч Yes

Ч No

(Provide details if applicable)

a‹ϙFÍŘîſÍŘôϙÍĲîϙ‹Ūæ-FÍŘîſÍŘôϙ„ÍŘťϙbŪıæôŘŜϡ

1. (˜ϡϙ϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶

2. "ŘĖŽôŘϙ‹ĖîôϙÍıôŘÍϡϙ϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶

3. „ÍŜŜôĲČôŘϙ‹ĖîôϙÍıôŘÍϡϙ϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶

4. „ÍŜŜôĲČôŘϙ‹ĖîôϙŪŘæϙÍıôŘÍϡϙ϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶϶

Screenshots:

Attach screenshots of Premium Tech Tool CMS mismatches here.

a‹ϙ‹ĺċťſÍŘôϙ„ÍŘťϙbŪıæôŘŜϙϼFÍŘîſÍŘôϙÍĲîϙ‹Ūæ-FÍŘîſÍŘôϽϡ

x

Check if update available for CMS SW. If yes, update software after CBR performing

SWDL via PTT or workshop toolbox.
6
CMS Black Screen Troubleshooting

November 2025
2 Description of issue

Two Issues are being seen

a) CMS Black Screen Occurring on either Driver OR Passenger displays (temporary

black screen)
b) Permanent Red Warning Pop up in Instrument Cluster (Permanent Red Warning Until

Battery Disconnect is completed using the maintenance disconnect switch)
7
CMS Black Screen Troubleshooting

November 2025
3 Fault Codes

The Fault codes should be checked ƱŘŜťϙfor the CMS; this will help in determining what the

root cause is for the issue.

From the list of fault codes below, if they appear as INACTIVE in PTT and issue cannot be

duplicated, then proceed to section 3.1 Fault codes - INACTIVE. Prioritize fault codes with

high occurrence counts.

All ACTIVE fault codes should be fault traced via respective fault trace section in CBR (ECU,

Monitor/Display, Camera, Wiring) section 3.2 Fault Codes – ACTIVE.
3.1 Fault codes – INACTIVE

In the event of there being the following CMS INACTIVE fault codes with most occurrence

counts, then perform the listed corrective actions associated with each fault code

IĲÍèťĖŽôϙ>ÍŪīťϙĺîôŜϙċĺŘϙ"ŘĖŽôŘϙÍĲîϯĺŘϙ„ÍŜŜôĲČôŘϙ‹Ėîôϙ"ĖŜŕīÍƅŜ

IF you have any of the following high occurrence Inactive fault codes in the table below,

perform the following part replacements

x
Class II/IV overlay (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͐ϡϙīÍŜŜϙIIϯI«ϙĺŽôŘīÍƅϙϼ„bϭϙ͓͓͑͏͗͑͑͘Ͻϙ

installation)

DTC
Fault Description
U1004-08
Lost Communication With Left Side View

Monitor - Bus Signal / Message Failures
U100A-08
Lost Communication with Right Side View

Monitor - Bus Signal / Message Failures
B1005-13
Right Side View Monitor Circuit - Circuit

Open
B1004-13
Left Side View Monitor Circuit - Circuit

Open
B1004-͐͘
Left Side View Monitor Circuit - Circuit

Current Above Threshold
B1004-1C
Left Side View Monitor Circuit - Circuit

Voltage Out of Range
B1005-02
Right Side View Monitor Circuit - General

Signal Failure
B1005-͐͘
Right Side View Monitor Circuit - Circuit

Current Above Threshold
8
CMS Black Screen Troubleshooting

November 2025

B1005-1C
Right Side View Monitor Circuit - Circuit

Voltage Out of Range
IĲÍèťĖŽôϙ>ÍŪīťϙĺîôŜϙċĺŘϙ"ŘĖŽôŘϙ‹ĖîôϙÍıôŘÍ

IF you have any of the following high occurrence Inactive fault codes in the table below,

perform the following part replacements

x

x
x
Class II/IV overlay (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͐ϡϙīÍŜŜϙIIϯI«ϙĺŽôŘīÍƅϙϼ„bϭϙ͓͓͑͏͗͑͑͘Ͻϙ

installation)

"ŘĖŽôŘϙ‹ĖîôϙVŪıŕôŘϙFÍŘĲôŜŜ (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͑ϡϙVŪıŕôŘϙFÍŘĲôŜŜϙ"ŘĖŽôŘϙŜĖîôϙϼ„bϭϙ

͔͖͗͐͏͔͑͒ϙѭϙ«IbϙĲŪıæôŘϽϙĺŘϙVŪıŕôŘϙFÍŘĲôŜŜϙ„ÍŜŜôĲČôŘϙŜĖîôϙϼ„bϭϙ͔͖͗͐͏͔͓͑ϙѭϙ«Ibϙ

number) installation)

Driver Side Camera arm (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͓ϡϙÍıôŘÍϙÍŘıϙŘôŕīÍèôıôĲť)

DTC
Fault Description
B1002-͐͘
Driver Side Camera Circuit – Circuit

Current Above Threshold
B1002-13
Driver Side Camera Circuit – Circuit Open
U1001-08
Lost Communication with Driver Side

Camera – Bus Signal/Message Failures
IĲÍèťĖŽôϙ>ÍŪīťϙĺîôŜϙċĺŘϙ„ÍŜŜôĲČôŘϙ‹ĖîôϙÍıôŘÍ

IF you have any of the following high occurrence Inactive fault codes in the table below,

perform the following part replacements

x

x
x
Class II/IV overlay (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͐ϡϙīÍŜŜϙIIϯI«ϙĺŽôŘīÍƅϙϼ„bϭϙ͓͓͑͏͗͑͑͘Ͻϙ

installation)

„ÍŜŜôĲČôŘϙ‹ĖîôϙVŪıŕôŘϙFÍŘĲôŜŜ (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͑ϡϙVŪıŕôŘϙFÍŘĲôŜŜϙ"ŘĖŽôŘϙŜĖîôϙ

ϼ„bϭϙ͔͖͗͐͏͔͑͒ϙѭϙ«IbϙĲŪıæôŘϽϙĺŘϙVŪıŕôŘϙFÍŘĲôŜŜϙ„ÍŜŜôĲČôŘϙŜĖîôϙϼ„bϭϙ͔͖͗͐͏͔͓͑ϙѭϙ

VIN number) installation)

Passenger Side Camera arm (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͓ϡϙÍıôŘÍϙÍŘıϙŘôŕīÍèôıôĲť)

DTC
Fault Description
B1000-͐͘
Right Side Camera Circuit - Circuit

Current Above Threshold
B1000-13
Right Side Camera Circuit - Circuit Open
˜͐͏͏͘-08
Lost Communication With Right Side

Camera - Bus Signal / Message Failures

͘
CMS Black Screen Troubleshooting

November 2025

IĲÍèťĖŽôϙ>ÍŪīťϙĺîôŜϙċĺŘϙ„ÍŜŜôĲČôŘϙ‹ĖîôϙŪŘæϙÍıôŘÍ

IF you have any of the following high occurrence Inactive fault codes in the table below,

perform the following part replacements

x

x
x
Class V overlay (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͒ϡϙīÍŜŜϙ«ϙiŽôŘīÍƅϙϼ„bϭϙ͓͓͑͏͗͐͒͘ϽϙĖĲŜťÍīīÍťĖĺĲ)

„ÍŜŜôĲČôŘϙ‹ĖîôϙVŪıŕôŘϙFÍŘĲôŜŜ (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͑ϡϙVŪıŕôŘϙFÍŘĲôŜŜϙ"ŘĖŽôŘϙŜĖîôϙ

ϼ„bϭϙ͔͖͗͐͏͔͑͒ϙѭϙ«IbϙĲŪıæôŘϽϙĺŘϙVŪıŕôŘϙFÍŘĲôŜŜϙ„ÍŜŜôĲČôŘϙŜĖîôϙϼ„bϭϙ͔͖͗͐͏͔͓͑ϙѭϙ

VIN number) installation)

Passenger Side Camera arm (ĺŘŘôèťĖŽôϙÍèťĖĺĲϙϭ͓ϡϙÍıôŘÍϙÍŘıϙŘôŕīÍèôıôĲť)

DTC
Fault Description
B1001-͐͘
Right Side Kerb Camera Circuit - Circuit

Current Above Threshold
B1001-13
Right Side Kerb Camera Circuit - Circuit

Open
U1002-08
Lost Communication With Right Side

Kerb Camera - Bus Signal / Message

Failures
3.2 Fault Codes – ACTIVE

1. ECU Related Active Fault Codes

For ECU related Fault codes, follow diagnostic procedure in PTT.

For Black screen occurring on both Driver AND Passenger displays at the same time, ECU

>ÍŪīťϙèĺîôŜϙŜēĺŪīîϙæôϙÍîîŘôŜŜôîϙƱŘŜť.

DTC
Fault Description
U3000-04
Electronic control unit - System Internal

Failures
U3000-01
Electronic control unit - General

Electrical Failure
U3000-A2
Electronic control unit - System Voltage

Low
U3000-61
Electronic control unit - Signal

Calculation Failure
2. Monitor/Display HW Active Related Fault Codes
10
CMS Black Screen Troubleshooting

November 2025

>ĺŘϙ "ĖŜŕīÍƅϙ F®ϙ active related fault codes, follow PTT Diagnostics and Impact

Instructions

DTC
Fault Description
B1005-͏͘
Right Side View Monitor Circuit Component Failures
B1005-2B
Right Side View Monitor Circuit - Signal

Cross Coupled
B1005-41
Right Side View Monitor Circuit - General

Checksum Failure
B1004-͏͘
Left Side View Monitor Circuit Component Failures
B1004-41
Left Side View Monitor Circuit - General

Checksum Failure
B1004-00
Left Side View Monitor Circuit - No Sub

Type Information
B1004-2B
Left Side View Monitor Circuit - Signal

Cross Coupled
B1004-26
Left Side View Monitor Circuit - Signal

Rate of Change Below Threshold
B1004-44
Left Side View Monitor Circuit - Data

Memory Failure
B1005-00
Right Side View Monitor Circuit - No Sub

Type Information
B1005-02

12 3

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