P0703-62 - Brake Switch B Circuit - Signal compare failure: Action

WARNING: This page is about a different car, the 2017 Jaguar XJ, 2016 Jaguar XJ, 2015 Jaguar XJ, 2014 Jaguar XJ, and 2013 Jaguar XJ. 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 anti-lock brake system control module for related DTCs and refer to the relevant DTC index
Check the brake pedal switch installation. Rectify as necessary
Check the brake pedal switch adjustment. Rectify as necessary
Refer to the applicable SYSTEM WIRING DIAGRAMS and check the brake pedal switch circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new brake pedal switch as necessary