TT 01 19 05_6
Service Bulletin Details
Public Details for: TT 01 19 05_6
Engine crank, no start or no -j623- ecm communication with dtc U0100 stored in ecm fault memory
- 2023 - 2022 - 2021 - 2020 - 2019 - 2018 -
Models from 2023
| 2023 VOLKSWAGEN ARTEON |
| 2023 VOLKSWAGEN ATLAS |
| 2023 VOLKSWAGEN ATLAS CROSS SPORT |
| 2023 VOLKSWAGEN GOLF R |
| 2023 VOLKSWAGEN GTI |
| 2023 VOLKSWAGEN JETTA |
| 2023 VOLKSWAGEN TIGUAN |
Models from 2022
| 2022 VOLKSWAGEN ARTEON |
| 2022 VOLKSWAGEN ATLAS |
| 2022 VOLKSWAGEN ATLAS CROSS SPORT |
| 2022 VOLKSWAGEN GOLF R |
| 2022 VOLKSWAGEN GTI |
| 2022 VOLKSWAGEN JETTA |
| 2022 VOLKSWAGEN TIGUAN |
Models from 2021
| 2021 VOLKSWAGEN ARTEON |
| 2021 VOLKSWAGEN ATLAS |
| 2021 VOLKSWAGEN ATLAS CROSS SPORT |
| 2021 VOLKSWAGEN GOLF R |
| 2021 VOLKSWAGEN GTI |
| 2021 VOLKSWAGEN JETTA |
| 2021 VOLKSWAGEN TIGUAN |
Models from 2020
| 2020 VOLKSWAGEN ARTEON |
| 2020 VOLKSWAGEN ATLAS |
| 2020 VOLKSWAGEN ATLAS CROSS SPORT |
| 2020 VOLKSWAGEN GOLF R |
| 2020 VOLKSWAGEN GTI |
| 2020 VOLKSWAGEN JETTA |
| 2020 VOLKSWAGEN TIGUAN |
Models from 2019
Models from 2018
Technical Tip 01-19-05TT - Engine Crank, No Start or No -J623- ECM Communication with DTC U0100 Stored in ECM Fault Memory Transaction No: 2054867/5 Release date: 2/22/2024 Condition ATTENTION: THIS IS A TECH TIP, NOT A TECHNICAL BULLETIN. TECH TIPS ARE NOT ASSOCIATED WITH WARRANTY CLAIMING. Applicable Vehicles Model(s) Year Eng. Code Trans. Code VIN Range From VIN Range To Arteon, Atlas, Jetta,Golf, GTI, Sportwagen, Beetle, Beetle Convertible, Passat, Tiguan, Tiguan LWB 2018-2019 All All All All Arteon, Atlas, Atlas Cross Sport, GTI, Golf R, Jetta, Tiguan LWB 2020-2023 All All All All Revision Table Instance Number Published Date Version Number Reason For Update 2054867/5 2/22/24 01-19-05TT Include an additional model & model year applicability. 2054867/4 11/5/21 01-19-05TT Include an additional step to check fuse SB9 during the procedure. 2054867/3 9/5/19 01-19-05TT Update effected vehicles 2054867/2 4/29/19 01-19-05TT Add figures 1 and 2. 2054867/1 4/26/19 01-19-05TT Original publication. 1 Technical Tip 01-19-05TT - Engine Crank, No Start or No -J623- ECM Communication with DTC U0100 Stored in ECM Fault Memory Transaction No: 2054867/5 Release date: 2/22/2024 Technical Background DTC U0100 Description Lost Communication with ECM/PCM When disconnecting the Battery during service, the -J623- (ECM) may become internally shorted as a result of the Positive Battery Terminal grounding out on the ECM case. DTC U0100 may set, as well as an engine crank with no start condition. Service When disconnecting or replacing a Battery, the Repair Manual procedure outlined in Elsa must be followed in its entirety. See Repair Manual Group 27. The Battery Ground Cable must always be disconnected prior to the Battery Positive Cable. Failure to do so may result in internal ECM damage. Also check fuse SB9 for ignition coils to see if it is open. If the fuse is open it will need to be replaced. Figure 1 Figure 2 . Additional Information © 2024 Volkswagen Group of America, Inc. All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher. 2