It’s often assumed that an ailing Land Rover can be wheeled into a garage and connected to a diagnostic computer, leaving the mechanic with nothing more to do than read the fault on the screen and press a couple of buttons to fix the fault or at worst, replace the part it tell him to. This course simply blows that myth way. Sure, diagnostic equipment can do this but there’s far more to it. For a start, ECUs don’t think. They‘ll send out a standard fault code that may be initiated by several possible causes. The mechanic need to do the thinking to understand why that code has been flagged up. And he needs to know the vehicles hardware and software intimately to be able to use Auto logic to interrogate signal strengths and wave forms. This is where all the operator’s knowledge and experience is absolutely critical in reaching an accurate diagnosis and fixing the part that need fixing, instead of expensively replacing successive parts until it happens to come right.
In the meantime, we’ve been covering the other electronically controlled Land Rovers with Diagnose. We’re starting the detailed coverage over the page with the now notorious P38 Range Rover I’ll be talking in more detail about the Range Rover in a future issue.
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