1815422-1

Technical Service Bulletin (TSB)
Flash: Powertrain Control Module (PCM) Updates
REFERENCE:
TSB: 18-154-22 REV. A
GROUP 18 - Vehicle Performance
VEHICLES
AFFECTED:
2023 **(JT) Jeep Gladiator**
MARKET APPLICABILITY:
Vehicle built on or before November 21, 2022 (MDH 1121XX) equipped HNA
□CH
with a 3.6L V6 24V VVT Engine Up Grade IW/ESS (Sales Code ERC).
HEE
□IAP
Date:
November 29,
2022
REVISION: 18-154-22
HSA
CUSTOMER
SYMPTOM:
CAUSE:
□MEA
• P0300 - Multiple Cylinder Misfire.
PCM Software
This bulletin supersedes Technical Service Bulletin (TSB) 18-154-22, date of issue November 24, 2022,
which should be removed from your files. All revisions are highlighted with **asterisks** and include
correction to vehicle and release date.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 22-228, date
of issue **November 24, 2022**. All applicable Un-Sold RSU VINs have been loaded. To verify this RSU
service action is applicable to the Un-Sold vehicle, use VIP or perform a VIN search in
DealerCONNECT/Service Library. This RSU will expire 18 months after the date of issue.
CLAIMS DATA:
Labor Operation No:
Labor Description
Skill Category
Labor Time
18-19-06-9W
Module, Powertrain Control (PCM) - Inspect Only
(0 - Introduction)
1 - Engine Repair and
Performance
0.2 Hrs.
18-19-06-9X
Module, Powertrain Control (PCM) - Inspect and
Reprogram
(0 - Introduction)
1 - Engine Repair and
Performance
0.3 Hrs.
Failure code
RF
Required Flash
CC
Customer Concern
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 a customer’s VIN is listed in VIP or your RSU VIN list, perform the repair. If any vehicle not on the VIN list
exhibits the symptom/condition or DTC, perform the repair.
18-154-22 REV. A
-2-
SPECIAL TOOLS/EQUIPMENT:
Description
Ref. No.
Notes
wiTECH or Equivalent
–
–
REPAIR PROCEDURE:
NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2 volts. Do not
allow the charging voltage to climb above 13.5 volts during the flash process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. Is the vehicle on the RSU VIN list?
• YES>>> Proceed to Step 2.
• NO>>> Proceed to Step 3.
2. Does the PCM have the latest software already installed?
• YES>>> This bulletin has been completed, use inspect LOP (18-19-06-9W) to close the active RSU.
• NO>>> Proceed to Step 3.
3. Reprogram the PCM with the latest software. Detailed instructions for flashing control modules using the
wiTECH Diagnostic Application are available by selecting the application’s “HELP” tab.
4. 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.
5. Using wiTECH perform “Cam Crank Relearn” routine. This routine can be found in PCM “Misc
Functions”.
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.