Land Rover B1d9f11 2021 Verified File

The JLR electrical system is extremely sensitive to voltage. A weak auxiliary battery or a failing main AGM battery can cause every module to throw false "short circuit" codes. Before replacing physical parts, the battery must be load-tested.

: The Audio Amplifier Module is reporting that it has lost the signal that tells it how fast the engine is running (the crank signal). land rover b1d9f11 2021

: Use an oscilloscope or a high-end scan tool to verify if the Engine Speed signal is reaching the AAM input pins. Software Update The JLR electrical system is extremely sensitive to voltage