Technical Service Bulletin (TSB)
Flash: Integrated Dual Charging Module (IDCM) Enhancements
REFERENCE:

TSB: 08-110-23 REV. C
GROUP 08 - Electrical

VEHICLES
AFFECTED:

2023 (WL) Jeep Grand Cherokee
MARKET APPLICABILITY:
This bulletin applies to vehicles built on or before May 19, 2023 (MDH HNA
HIAP**
0519XX) equipped with 2.0L I4 DOHC DI Turbo PHEV Engine (Sales
H**EE
□MEA
Codes ECX).
HSA
□CH

CUSTOMER
SYMPTOM:

Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation
the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set:
• B22A9-64 - ECU Internal Performance-Signal Plausibility Failure.
• B22A9-16 - ECU Internal Performance-Circuit Voltage Below Threshold.
• B22A9-17 - ECU Internal Performance-Circuit Voltage Above Threshold.
• B22A9-19 - ECU Internal Performance-Overcurrent.
Customer may also experience the following:
• Vehicle will not charge.

CAUSE:

IDCM software

Date:

June 16, 2023

REVISION: 08-110-23 REV. B

This bulletin supersedes Technical Service Bulletin (TSB) 08-110-23 REV. B, date of issue June 10,
2023, which should be removed from your files. All revisions are highlighted with **asterisks**
and include additional markets.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU)
23-167, date of issue June 10, 2023. All applicable RSU VINs have been loaded. To verify this RSU
service action is applicable to the vehicle, use VIP or perform a VIN search in DealerCONNECT/
Service Library. All repairs are reimbursable within the provisions of warranty. This RSU will expire 18
months after the date of issue.
REPAIR SUMMARY:
This bulletin involves reprogramming the IDCM with the latest software available.
CLAIMS DATA:
Labor Operation No:

Labor Description

Skill Category

Labor Time

18-90-16-9B

Module, Integrated Dual
Charging (IDCM) Inspect Only
(0 - Introduction)

6 - Electrical and Body
Systems

0.2 Hrs.

18-90-16-9A

Module, Integrated Dual
Charging (IDCM) Inspect and Reprogram
(0 - Introduction)

6 - Electrical and Body
Systems

0.3 Hrs.

Failure code

RF

Required Flash - RSU

CC

Customer Concern

08-110-23 REV. C

-2-

The dealer must choose which failure code to use depending on if this is a Rapid Service Update
(RSU) or Technical Service Bulletin.
• The “RF” failure code is required for essential module flash/reprogramming and can only be used after
confirmation that the VIN is included on the RSU.
• The failure code “RF” (Required Flash) can no longer be used on Technical Service Bulletin flashes.
The “RF” failure code must be used on an RSU.
• If the customer’s concern matches the SYMPTOM/CONDITION identified in the Technical Service
Bulletin, failure code CC is to be used. When utilizing this failure code, the 3C’s must be supplied.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in DealerCONNECT/
Service Library, verify all related systems are functioning as designed. If Diagnostic Trouble Codes (DTCs) or
symptom conditions, other than the ones listed above are present, record the issues on the repair order
and repair as necessary before proceeding further with this bulletin.
If the customer describes any of the symptoms listed above in the customer symptom section, perform the
Repair Procedure.
SPECIAL TOOLS/EQUIPMENT:
Description

Ref. No.

Notes

wiTECH or Equivalent

–

–

REPAIR PROCEDURE:
WARNING!
• Before performing the software reprogramming, it is necessary to make the vehicle safe.
• When performing repairs that directly involve or imply possible contact with live high voltage
components/systems, the technician must ensure that the power supply of the high-voltage
system is disconnected throughout the operation.
• Only specifically trained technicians qualified to perform repairs on vehicles with high voltage
systems under current national laws/regulations are authorized to work on the vehicle.
• Before performing any diagnostic repair work on the vehicle, carefully read and comply with the
general instructions for working safely on hybrid/electric vehicles and use suitable general
equipment and Personal Protective Equipment (PPE).
NOTE: Install a battery charger to maintain a 12 volt system voltage.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
NOTE: Additional module flashes are required for this update to be effective, the following modules
are all to be updated along with this IDCM update:
• Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known as the
Power Inverter Module (PIM).
• Transmission Control Module (TCM).
• Powertrain Control Module (PCM).
• Battery Pack Control Module (BPCM).
1. Is the vehicle on the RSU VIN list?
• YES >>> Proceed to Step 2.
• NO >>> Proceed to Step 3.
2. Does the IDCM have the latest software already installed?
• YES >>> This bulletin has been completed, use inspect LOP (18-90-16-9B) to close this active RSU.
Verify all other modules have been updated.
• NO >>> Proceed to Step 3.

-3-

08-110-23 REV. C

3. Verify the BPCM is also programmed with the latest available software. Refer to all applicable published
service bulletins for detailed repair procedures and labor times regarding updating the BPCM software.
4. Reprogram the IDCM with the latest software. Detailed instructions for flashing control modules using the
wiTECH Diagnostic Application are available by selecting the application ”HELP” tab.
5. Verify the HCP, AHCP, TCM, PCM and BPCM are also programmed with the latest available software.
Refer to all applicable published service bulletins for detailed repair procedures and labor times
regarding updating the HCP, AHCP, TCM, PCM and BPCM software.
6. Clear all DTCs that may have been set in any module due to reprogramming. The wiTECH application
will automatically present all DTCs after the flash and allow them to be cleared.
7. Verify the vehicle will charge.
8. Does the vehicle charge properly after the software flash?
• YES >>> This bulletin has been completed, Use LOP (18-90-16-9A). no further action is required.
• NO >>> The IDCM will need to be replaced under normal warranty. Refer to the detailed service
procedures available in DealerCONNECT> Service Library under: Service Info>08 - Electrical / 8E
- Electronic Control Modules / Module, Integrated Dual Charging (IDCM) / Removal and Installation.
NOTE: The new IDCM will not have to be programmed, it will already have the latest software
installed.
POLICY:
Reimbursable within the provisions of the warranty.
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.