Flash: Powertrain Control Module (Pcm) Updates (18-157-22)

WARNING: This page is about the Gladiator Altitude, 3.0L Eng VIN M, Full Time T/Case Control, which is a different variant/trim than selected.

Publication date: 2023-03-21
Reference number: 18-157-22
Supersedes refnos: 18-032-23

FLASH: POWERTRAIN CONTROL MODULE (PCM) UPDATES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 18-032-23, Date of Issue: March 21, 2023

CHRYSLER:	2022 (JT) Jeep Gladiator
GROUP:	18 - Vehicle Performance

Superceded Bulletin(s): 18-157-22, Date of Issue: November 29, 2022

VEHICLES AFFECTED

2022 (JT) Jeep Gladiator

Equipped with a 3.0L V6 Turbo Diesel Engine W/ESS (Sales Code EXJ).

**The RSU portion of this bulletin applies to vehicles built on or after September 1, 2022 (MDH 0901XX) and on or before October 16, 2022 (MDH 1016XX)**

CUSTOMER SYMPTOM

Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set:

P016F - Closed Loop Fuel Pressure Control At Limit - Pressure Too Low.
P025C - Fuel Pump Module Control Circuit Low.
P0300-00 - Multiple Cylinder Misfire.
P0301-00 - Cylinder 1 Misfire.
P0302-00 - Cylinder 2 Misfire.
P0303-00 - Cylinder 3 Misfire.
P0304-00 - Cylinder 4 Misfire.
P0305-00 - Cylinder 5 Misfire.
P0403-00 - EGR Control Circuit Open (Disabled Fault).
P208B - Reductant Pump 1 Control Performance.

Other Software enhancements:

Low speed engine idle improvements.
Improved engine restart performance and torque response during low fuel level and/or hot ambient conditions.

CAUSE

PCM software

NOTE: This bulletin supersedes Technical Service Bulletin (TSB) 18-157-22, date of issue November 29, 2022, which should be removed from your files. All revisions are highlighted with **asterisks** and include additional markets, build dates, converting to an RSU, steps and LOP.
**This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 23-079, date of issue March 21, 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 PCM with the latest available software.

CLAIMS DATA

CLAIMS INFORMATION

Labor Operation No:	Labor Description	Skill Category	Labor Time
**18-19-04-TJ	Module, Powertrain Control (PCM) - Inspect (0 - Introduction)	1 - Engine Repair and Performance	0.2 Hrs.**
18-19-04-TE	Module, Powertrain Control (PCM) - Inspect and Reprogram (0 - Introduction)	1 - Engine Repair and Performance	0.3 Hrs.
Failure code	RF	Required Flash
Failure code	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 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.**

SPECIAL TOOLS/EQUIPMENT

SPECIAL TOOLS INFORMATION

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.

**Is the vehicle on the RSU VIN list?
- YES>>> Proceed to Step 2 .
- NO>>> Proceed to Step 3 .
Does the PCM have the latest software already installed?
- YES>>> This bulletin has been completed, use inspect LOP (18-19-04-TJ) to close the active RSU. Normal diagnosis should be performed.
- NO>>> Proceed to Step 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.
Clear any DTCs that may have been set in any module due to reprogramming. The wiTECH application will automatically present all DTCs after the flash and allows them to be cleared.

POLICY

Reimbursable within the provisions of the warranty.