DTC B0021-12: Left Curtain Deployment Control 1 - Circuit short to battery: Action

Refer to the applicable System Wiring Diagram(s)and check the left side air curtain circuit for short circuit to power. Install a new wiring harness as necessary. If no wiring harness fault exists, using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new left side air curtain