DTC B1009-87: Ignition Authorisation - Missing message: Action

WARNING: This page is about a different car, the 2023 Jaguar F-Pace and 2022 Jaguar F-Pace. However, it is still accessible from the selected car via links, so may be relevant.

Using the Jaguar Land Rover approved diagnostic equipment, check the live data signal - ECU Power Supply Voltage (0xD111). Refer to the electrical circuit diagrams and check the instrument cluster power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Write Security Target ID (0x7006)
Refer to the electrical circuit diagrams and check the High Speed CAN bus (HMI-CAN) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary. Clear the Diagnostic Trouble Code(s) and retest