Flash: Powertrain Control Module (Pcm) Updates (18-114-22)

WARNING: This page is about the Wrangler Rubicon, 2.0L Eng VIN N, which is a different variant/trim than selected.

Publication date: 2022-06-14
Reference number: 18-114-22
Supersedes refnos: 18-022-20, 18-022-20 REV. A, 18-037-19, 18-037-19 REV. A, 18-076-21, 18-089-18

FLASH: POWERTRAIN CONTROL MODULE (PCM) UPDATES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 18-114-22, Date of Issue: June 14, 2022

CHRYSLER:	2019 (JL) Jeep Wrangler
GROUP:	18 - Vehicle Performance

Superceded Bulletin(s): 18-076-21, Date of Issue: September 14, 2021

NOTE: This bulletin supersedes Technical Service Bulletin (TSB) 18-076-21, date of issue September 14, 2021, which should be removed from your files. All revisions are highlighted with **asterisks** and include additional Diagnostic Trouble Codes (DTCs) and LOP.

OVERVIEW

This bulletin involves reprogramming the PCM with the latest available software.

MODELS

MODELS CHART

2019

(JL)

Jeep Wrangler

NOTE: This bulletin applies to vehicles within the following markets/countries: North America.

NOTE: This bulletin applies to vehicles equipped with a 2.0L I4 DOHC DI Turbo E-torque Engine (Sales Code EC3).

SYMPTOM/CONDITION

The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:

**P0335 - Crankshaft Position Sensor Circuit.
P0339 - Crankshaft Position Sensor Intermittent.
P2C90 - Crankcase Ventilation System - Hose "A" Disconnected.**
P061A - Level 2 Torque Performance.
P0607-00 - ECU Internal Performance.
P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation).
P02EE - Cylinder 1 Injector Circuit Performance.
P02EF - Cylinder 2 Injector Circuit Performance.
P02F0 - Cylinder 3 Injector Circuit Performance.
P02F1 - Cylinder 4 Injector Circuit Performance.
P012A - Turbocharger/Supercharger Inlet Pressure Sensor 1.
P012C - Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low.
P012D - Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High.
P0607 - ECU Internal Performance.
P06EF - Engine Restart Performance.
P050B - Cold Start Ignition Timing Performance.
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.

P0128 - Thermostat Rationality.
P0507 - Idle Speed Performance Higher Than Expected.

Customers may also describe the following condition:

Excessive radiator fan noise when the A/C is on MAX output.

In addition, the following software enhancements are available:

Electric Vacuum Pump (EVP) update.
Fan noise reduction.

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 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.

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: The Anti-lock Brake System module (ABS) and Hybrid Control Processor (HCP) must be updated to the latest available software at the conclusion of this repair procedure. Refer to all applicable published service bulletins for detailed repair procedures and labor times regarding updating the HCP and ABS software.

Reprogram the PCM with the latest available 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 modules due to reprogramming. The wiTECH application will automatically present all DTCs after the flash and allow them to be cleared.
Verify the ABS and HCP is programmed with the latest available software. Refer to all applicable published service bulletins for detailed repair procedures and labor times regarding updating the ABS and HCP software.

POLICY

Reimbursable within the provisions of the warranty.

TIME ALLOWANCE

TIME ALLOWANCE CHART

Labor Operation No:	Description	Skill Category	Amount
**18-19-06-FA	Module, Powertrain Control (PCM) - Reprogram (0 - Introduction)	1 - Engine Repair and Performance	0.3 Hrs.**

NOTE: The expected completion time for the flash download portion of this procedure is approximately 7 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