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Jeep TSB #18-051-22 REV. B
2021 Jeep Wrangler
TSB Document:
Affected Component: EXTERIOR LIGHTING
- Summary
- Flash: Powertrain Control Module (PCM) 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 Code (DTC). ? U0402-00 - Implausible Data Received From TCM. ? U145D - Implausible Data Received From TCM On D-PT. **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.** Other software enhancement included with this update: ? On Board Fuel Consumption Monitoring Updates (China Only). This bulletin involves reprogramming the PCM 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 PCM update: ? Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known as the Power Inverter Module (PIM). ? Transmission Control Module (TCM). ? Battery Pack Control Module (BPCM). ? Integrated Dual Charging Module (IDCM)
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