DTC P1536-62: Parking Brake Switch Circuit - Signal compare failure: Action

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2015 Jaguar XKR-S, 2015 Jaguar XKR, 2015 Jaguar XK, 2014 Jaguar XKR-S, and 2014 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

All signals from the switch are active at the same time. Refer to the electrical circuit diagrams and check all the switch apply, release and return circuits for short circuit or open circuit. Repair wiring harness as required
If no fault with wiring harness suspect switch has an internal fault. Refer to the warranty policy and procedures manual, or determine if any prior approval program is in operation, prior to the installation of a new module/component