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Jeep TSB #08-029-23
2021 Jeep Wrangler
TSB Document:
Affected Component: BACK OVER PREVENTION
- Summary
- Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs). P061B-00 - Internal Control Module Torque Calculation Performance. NOTE: P061B-00 DTC may set after driving on snow/ice in 2WD and Traction Control System (TCS) turned off. P06A3-00 - Sensor Reference Voltage 9D9 Circuit/Open. P0697-00 - Sensor Reference Voltage 3 Circuit. Other software enhancement included with this update: On Board Fuel Consumption Monitoring Updates (China Only). **Customers may experience one or more of the following: Vehicle may not be able to enter electric mode driving while Fuel Oil Refresh Mode (FORM) is active. FORM staying on too long.** This bulletin involves reprogramming the HCP and AHCP or also known as Power Inverter Module (PIM) with the latest available software. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this HCP and AHCP update: Powertrain Control Module (PCM). Transmission Control Module (TCM). Battery Pack Control Module (BPCM). Integrated Dual Charging Module (IDCM)
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