2022 Jeep Wrangler MIL and Charging Issue TSB

Owners of the 2022 Jeep Wrangler may encounter issues such as the Malfunction Indicator Lamp (MIL) illuminating or the vehicle failing to charge. These symptoms are often linked to specific Diagnostic Trouble Codes (DTCs) related to the Integrated Dual Charging Module (IDCM). This 2022 Jeep Wrangler manufacturer_communication, identified by NHTSA ID 10248012, provides a software update to resolve these concerns.

Symptoms You Might Notice

Owners of affected 2022 Jeep Wrangler vehicles may observe one or both of the following conditions:

• "Malfunction Indicator Lamp (MIL) illumination" on the dashboard.
• "Vehicle will not charge," indicating a problem with the charging system.

Fault Codes / DTCs

Technicians investigating these issues may find one or more of the following Diagnostic Trouble Codes (DTCs) stored in the vehicle's system:

Code	Description
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

These codes specifically point to internal performance issues within the Electronic Control Unit (ECU) of the Integrated Dual Charging Module (IDCM).

Repair Procedure Summary

The resolution for these issues involves updating the software for the Integrated Dual Charging Module (IDCM). This update is crucial for addressing the underlying causes of the "Malfunction Indicator Lamp (MIL) illumination" and charging problems in the 2022 Jeep Wrangler.

It is important to note that this update requires flashing several modules simultaneously for the fix to be effective. The following control modules must all be updated along with the IDCM:

• Integrated Dual Charging Module (IDCM)
• Powertrain Control Module (PCM)
• Transmission Control Module (TCM)
• Battery Pack Control Module (BPCM)
• Hybrid Control Processor (HCP), also known as the Auxiliary Hybrid Control Processor (AHCP) or Power Inverter Module (PIM)

This comprehensive software update, detailed in the 2022 Jeep Wrangler manufacturer_communication referenced by NHTSA ID 10248012, ensures all related systems are synchronized and functioning correctly.

What Owners Should Do

If you own a 2022 Jeep Wrangler and are experiencing a "Malfunction Indicator Lamp (MIL) illumination" or your "Vehicle will not charge," you should contact your authorized Jeep dealership. The necessary software updates will be performed by qualified technicians. This service is typically covered under warranty for new vehicles.

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Source: NHTSA ID 10248012