2024 Alfa Romeo Tonale PIM Updates for MIL and DTCs

Owners of the 2024 Alfa Romeo Tonale equipped with the 1.3L I4 DOHC Turbo PHEV Engine (Sales Code EYG) may experience a Malfunction Indicator Lamp (MIL) illuminating on their dashboard. This warning light is typically accompanied by specific Diagnostic Trouble Codes (DTCs) related to the vehicle's electric coolant pump or battery cooling system. This issue affects vehicles built on or before April 30, 2024 (MDH 0430XX).

To address these concerns, Stellantis has released Technical Service Bulletin (TSB) 08-045-24 REV. C, which supersedes the previous TSB 08-045-24 REV. B dated November 13, 2024. This bulletin outlines a software update for the Auxiliary Hybrid Control Processor (AHCP) and Hybrid Control Processor (HCP), collectively known as the Power Inverter Module (PIM).

Symptoms

If your 2024 Alfa Romeo Tonale is affected, you will notice a "Malfunction Indicator Lamp (MIL) illumination" on your instrument cluster. This warning light indicates a problem with the vehicle's powertrain or emissions system. Along with the MIL, one or more of the following Diagnostic Trouble Codes (DTCs) will be stored in the vehicle's computer:

• P2601-00 - "Electric Coolant Pump Control Circuit Performance Stuck Off"
• U0623-00 - "Lost Communication With Coolant Pump 'A'"
• P1DBA - "Battery Cooling System Failure (Module, Hybrid Control Processor (HCP))"

These codes point to potential issues with the electric coolant pump or the battery cooling system, both critical components for the hybrid powertrain's operation and longevity.

Fault Codes / DTCs

The following DTCs are associated with the 2024 Alfa Romeo Tonale PIM updates:

Code	Description
P2601-00	Electric Coolant Pump Control Circuit Performance Stuck Off
U0623-00	Lost Communication With Coolant Pump "A"
P1DBA	Battery Cooling System Failure (Module, Hybrid Control Processor (HCP))

Diagnosis and Trigger Conditions

Technicians will use a Scan Tool (wiTECH) to perform appropriate diagnostic procedures. They will verify that all related systems are functioning as designed. If any of the listed DTCs or symptom conditions are present, the repair procedure outlined in TSB 08-045-24 REV. C should be followed.

This TSB has also been released as a Rapid Service Update (RSU) 24-153. For vehicles covered by the RSU, technicians must verify the vehicle's VIN is on the RSU VIN list using VIP or a VIN search in DealerCONNECT/Service Library. If a vehicle not on the RSU VIN list exhibits the symptoms, the repair procedure should still be performed.

Repair Procedure Summary

The primary repair for the 2024 Alfa Romeo Tonale PIM updates involves reprogramming the Auxiliary Hybrid Control Processor (AHCP) and Hybrid Control Processor (HCP), which are components of the Power Inverter Module (PIM). This reprogramming updates the module with the latest available software.

Before initiating the software flash, the technician will ensure the vehicle is safe and that a battery charger is connected to maintain sufficient voltage. After the reprogramming, any Diagnostic Trouble Codes (DTCs) that may have been set during the process will be cleared using the wiTECH application.

Required Tools or Parts

The main tool required for this service is a wiTECH diagnostic scan tool or an equivalent device. No specific parts are required to be replaced for vehicles exhibiting DTCs P2601 and U0623 either before or after the software update, as the issue is software-related.

Important Warnings for Technicians and Owners

Several critical warnings are highlighted in the TSB to ensure safety and proper procedure:

• "Before performing the software reprogramming, it is necessary to make the vehicle safe."
• "When performing repairs that directly involve or imply possible contact with live high voltage components/systems, the technician must ensure that the power supply of the high-voltage system is disconnected throughout the operation."
• "Only specifically trained technicians qualified to perform repairs on vehicles with high voltage systems under current national laws/regulations are authorized to work on the vehicle."
• "Before performing any diagnostic repair work on the vehicle, carefully read and comply with the general instructions for working safely on hybrid/electric vehicles and use suitable general equipment and Personal Protective Equipment (PPE)."
• "The vehicle must not be connected to a high voltage charger when performing software updates."
• "Install a battery charger to ensure sufficient battery voltage is provided during the flash process."
• "If this flash process is interrupted/aborted, the flash should be restarted."
• "No parts are required to be replaced for vehicles exhibiting DTCs P2601 and U0623 before, or after the software update."

Owner Action

If your 2024 Alfa Romeo Tonale displays a Malfunction Indicator Lamp (MIL) or you suspect it is experiencing issues related to the electric coolant pump or battery cooling system, it is recommended to contact your authorized Alfa Romeo dealer. They can perform a diagnostic check to confirm the presence of the relevant DTCs (P2601-00, U0623-00, or P1DBA) and apply the necessary software update. All repairs performed under this TSB are reimbursable within the provisions of your vehicle's warranty.