DTC U0100-87: Lost Communication With ECM/PCM "A" - Missing message: Action
- Refer to the electrical circuit diagrams and check the powertrain control module power and ground circuits for open circuit, high resistance
- Using the Jaguar Land Rover approved diagnostic equipment, perform a FlexRay network integrity test. Refer to the electrical circuit diagrams and check the FlexRay bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Using the Jaguar Land Rover approved diagnostic equipment, check the powertrain control module for related DTCs and refer to the relevant DTC index