U0077-88: Control Module Communication Bus "E" Off - Bus off: Action
WARNING:
The PHEV battery pack casing must not be disassembled due to the risk of exposure to high voltage. Failure to comply with this instruction may result in personal injury or death.
- Refer to the electrical circuit diagrams and check the high speed CAN (power mode zero) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the invalid data source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
- Using the Jaguar Land Rover approved diagnostic equipment, run application - ECU Diagnostics/Battery Energy Control Module (BECM)/Clear DTCs. Retest. If the fault persists, raise a Technical Assistance (TA):
- Using the Jaguar Land Rover approved diagnostic equipment, run application - ECU Diagnostics/Battery Energy Control Module (BECM)/ECU Functions/Prior Approval - Display Traction Battery Data
- Attach the Pathfinder session file using 'Pathfinder Sessions'
- Use the Diagnostic Trouble Code (DTC) as a reference number in the Customer Comments field
- Describe primary and secondary diagnostics completed