Most Land Rover electrical faults aren't the module the code names — they're the wiring, the ground, or the supply voltage feeding it. We trace, scope, and find the actual fault. No parts cannon.
Modern Land Rovers run 30+ control modules talking to each other over CAN, LIN and FlexRay buses. Most electrical faults aren't the module — they're the wiring: a broken trace inside a harness, a corroded ground, a chafed wire, a marginal connector. The module reports the symptom; the wiring is the cause.
The parts cannon doesn't work on these cars. Replace a BCM that's not faulty and you've just spent $1,800 to find out the issue is still there. We scope the signals first — voltage drop, current flow, communication on the bus — and identify the actual failure point.
It's a tempting shortcut. It almost never works on a Land Rover. Most module codes point to a circuit fault that the module is reporting — the module itself is fine.
Power supply, ground, or a broken trace in the harness. Scope the supply voltage, scope the ground, scope the signal, find the break. Then the module starts working again — no module replacement required.
Every module read, every code captured with freeze-frame data. We tell you which module is complaining and what it's actually trying to say.
Voltage and current on injectors, sensors, solenoids, ignition coils. The waveform shows you exactly which signal is wrong — not just which code is set.
Voltage drop tests, continuity, harness scope. We find the broken trace inside the loom that's been dropping power intermittently.
Amp clamp on each fuse circuit. Find the module that won't sleep — or the accessory that's been left on. Battery saved.
BCM, key, ABS module, transmission TCM. Programmed and coded with the factory JLR tool — not a generic clone tool.
Adaptive headlight failure, LED tail-light faults, AFS calibration after a strut change. The electrical side of every lighting system.
Range Rover
Range Rover Sport
Defender
Discovery
Velar & Evoque
FreelanderLand Rover electrical faults follow patterns. Here's what we see week-in-week-out and what each one usually turns out to be.
Engine, ABS, traction, suspension — all warning at once. Almost always a power/ground fault rather than every module failing simultaneously.
Car cuts out, restarts, runs fine. Usually a marginal connector or a wire chafed against a chassis edge. We datalog and find it.
Module not sleeping, accessory drawing current, parasitic load. Amp clamp on each fuse circuit finds the offender.
Often a security module sync issue, not the key. JLR Pathfinder talks to the immobiliser properly where generic tools can't.
Loose connector or corroded pin behind the dash. Wiggle test + scope finds it in minutes.
Regulator, motor, or switch. Voltage drop test rules out the wiring before you replace anything.
Software fault, USB-port short, or a head-unit power supply issue. Logged before we condemn the head unit.
Bulb out, level sensor stuck, or AFS module miscalibrated. Calibration is the fix nine times out of ten.
Full system scan via Snap-on Verdict and JLR Pathfinder. Every code, every freeze-frame, every live-data PID from every module on the bus. We don't miss the relevant one.
PicoScope on the wire feeding the module. Voltage, current, signal — we see exactly where the failure is between the connector and the part.
Replace the broken trace, clean the corroded ground, re-pin the marginal connector. Re-test, verify clean, code-clear, road-test. The module reports OK — because it was always fine.
"I drive past three workshops to get to Michael. I had a Defender 110 with an electrical fault no one could trace. Two days at Michael's and it was sorted. He scopes the wiring instead of guess-replacing modules — that alone has saved me thousands over the years."
If you're staring at a quote for a BCM, ECM, or any other module — bring it in for a second look. The fault is probably the wire, not the box.