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Jeep TSB #21-001-14
2011 Jeep Grand Cherokee
TSB Document:
Affected Component: ELECTRICAL SYSTEM
- Summary
- Flash: ELSD Module Enhancements This bulletin involves selectively erasing and reprogramming the Electronic Limited Slip Differential (ELSD) with new software. If any of the following DTC?s are either Active or Stored in the ELSD module?s memory, the ELSD motor will need to be replaced as well. C1490-00-REAR DIFFERENTIAL ACTUATOR INITIALIZATION FAILURE C148F-1D-REAR DIFFERENTIAL MEASURED MOTOR - CIRCUIT OUT OF RANGE C1489-96-REAR DIFFERENTIAL MOTOR BRAKE - COMPONENT INTERNAL FAILURE The customer may indicate that their 4X4 lamp may be flashing (indicating a malfunction of the 4X4 system).In addition, one or more of the following Diagnostic Trouble Codes (DTC) are Active or Stored in the ELSD control module?s memory. C1490-00-REAR DIFFERENTIAL ACTUATOR INITIALIZATION FAILURE C148F-1D-REAR DIFFERENTIAL MEASURED MOTOR - CIRCUIT OUT OF RANGE C1489-96-REAR DIFFERENTIAL MOTOR BRAKE - COMPONENT INTERNAL FAILURE
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