Flash: Powertrain Control Module (Pcm) Updates (18-055-19 REV. A)
Publication date: 2022-05-11Reference number: 18-055-19 REV. A
Supersedes refnos: 18-024-21, 18-048-22, 18-048-22 REV. A, 18-053-20, 18-053-20 REV. A, 18-053-20 REV. B, 18-055-19
FLASH: POWERTRAIN CONTROL MODULE (PCM) UPDATES
TECHNICAL SERVICE BULLETIN
Reference Number(s): 18-048-22 REV. A, Date of Issue:
May 11, 2022
Superceded Bulletin(s): 18-048-22, Date of Issue:
March 08, 2022
| CHRYSLER: | 2020 (JT) Jeep Gladiator |
| GROUP: | 18 - Vehicle Performance |
NOTE:
This bulletin supersedes Service Bulletin 18-048-22, dated March 8, 2022, which should be removed from your files. All revisions are highlighted with **asterisks** and include additional symptom/condition and LOP.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 20-053, date of issue August 28, 2020. All applicable Sold and Un-Sold 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.
This Technical Service Bulletin (TSB) has also been released as a Rapid Service Update (RSU) 20-053, date of issue August 28, 2020. All applicable Sold and Un-Sold 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.
OVERVIEW
This bulletin involves reprogramming the PCM with the latest available software.
MODELS
MODELS CHART
| 2020 | (JT) | Jeep Gladiator |
NOTE:
This bulletin applies to vehicles within the following markets/countries: North America, LATAM, APAC and EMEA.
NOTE:
The TSB bulletin portion applies to vehicles equipped with a 3.6L V6 24V VVT Engine Up Grade I W/ESS (Sales Code ERC).
SYMPTOM/CONDITION
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:
- P0300 - Multiple Cylinder Misfire.
NOTE:
If DTC P0300 is present either alone or along with other DTCs listed within this bulletin the right intake camshaft MUST be replaced along with this software update (only if DTC P0300 is present). Refer to the detailed service procedures available in DealerConnect> Service Library under: Service Info> 09 - Engine, 3.6L/Cylinder Head/Camshaft, Engine/Removal and Installation> Right.
If just the software flash was done without the right intake camshaft being replaced the DTC P0300 may reoccur.
If just the software flash was done without the right intake camshaft being replaced the DTC P0300 may reoccur.
NOTE:
If DTC P0300 is not present but other DTCs on this list below are present, perform just the software update.
- P0441 - EVAP Purge System Performance.
- P258B - Electronic Vacuum Pump Performance.
- C1252-92 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation.
- P0456 - EVAP System Small Leak.
NOTE:
If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system.
- P1404 - EGR Close Position Performance.
- P1206 - Fuel Pump Control Module Open Circuit To Fuel Pump.
Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will now be P025A - Fuel Pump Module Control Circuit Open after the software update.
- In addition the customer may notice one or more of the following:
- **Pinging/detonation sound from the engine after warm up at 1000-1500 RPM at low speed.**
- The Anti-Lock Brake System (ABS) light illuminates.
- The customer may notice an ability to shift into 1st gear at an unsafe speed (MTX Only).
- Cluster displays "Autopark Engaged" even when autopark is no longer active.
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 the customer describes the symptom/condition listed above or if the technician finds the DTC, perform the Repair Procedure.
PARTS REQUIRED
PARTS INFORMATION
| Qty. | Part No. | Description |
|---|---|---|
| 1 (AR) | 05047913AC | Camshaft - Right Intake |
| 1 (AR) | 04893804AB | Gasket - Cylinder Head Cover, Right |
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.
NOTE:
This Step 2
must only be performed if DTC P0300 is present.
- Is DTC P0300 present?
- YES>>> Proceed to Step 2 of the Repair Procedure.
- NO>>> Proceed to Step 3 of the Repair Procedure.
- Replace the right intake camshaft. Refer to the detailed service procedures available in DealerConnect> Service Library under: Service Info> 09 - Engine, 3.6L/Cylinder Head/Camshaft, Engine/Removal and Installation> Right.NOTE: After right intake camshaft replacement the PCM must still be updated with the latest available software. Proceed to Step 3 after camshaft repair.
- 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 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.
- Perform Cam/Crank Re-Learn routine in wiTECH.
- Reset the Fuel Adaptives.
POLICY
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE
TIME ALLOWANCE CHART
| Labor Operation No: | Description | Skill Category | Amount |
|---|---|---|---|
| **18-19-06-G6 | Module, Powertrain Control (PCM) - Reprogram (0 - Introduction) | 1 - Engine Repair and Performance | 0.3 Hrs.** |
| 09-05-01-98 | Module, Powertrain Control (PCM) -Reprogram and Right Intake Camshaft Replacement (3 - Highly Skilled) | 1 - Engine Repair and Performance | 3.3 Hrs. |
NOTE:
The expected completion time for the flash download portion of this procedure is approximately 5 minutes. Actual flash download times may be affected by vehicle connection and network capabilities.
FAILURE CODE
The dealer must use failure code CC with this Technical Service Bulletin.
- 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 (customer's concern, cause and correction) must be provided for processing Technical Service Bulletin flash/reprogramming conditions.
FAILURE CODE CHART
| CC | Customer Concern |