You’re advised to confirm which format your vehicle model uses. * Depending on your vehicle make, it will display 2 or 3 digit codes. This sign informs you to perform the goose test, which involves turning the steering wheel halfway through left and right, stepping on the brake pad, and holding on to the throttle to rev up the engine. * The first time the vehicle will illuminate once. * Next, you’ll need to wait for a couple of seconds, usually lasting between 30 – 60 seconds, for the vehicle to complete the self-diagnostic test. If you run on a 6-cylinder engine, it will flash three times and four times if you’re on an 8-cylinder engine. * The first set of flashes indicate the number of cylinders your vehicle has. * You’ll read the codes by identifying the number of flashes illuminated by the check engine light. * Immediately start the car’s engine once more, and have a pen and paper close by to record the OBD1 error codes. * Using the paper clip or the jumper cable, insert one of its ends on the top right pin of the first plug and the other end to the pin in the singular connector plug. The plug is housed in a plastic casing inscribed with the words, “EEC Test.” It is often found on the driver’s side against the firewall, but it could also be located on the passenger’s side. * Under the hood, locate the diagnostic box. The test described below is commonly referred to as the “Key On Engine Running” (KOER) test. Next, you’ll need to get your engine to optimal running temperatures by running the engine idle for 5-10 minutes. To initiate self-diagnosis, you first need the following items to assist you in recording the OBD1 error codes.įirstly, you’ll need an unrolled paper clip or a jumper cable, a piece of paper, and a pen.Ī piece of clipboard may come in handy, although it is not a necessary requirement. You can quickly look up the error codes on the internet to identify the defective part. The self-diagnostic system records error codes emitted by faulty components and shares the information with the driver. The system was introduced in cars manufactured between 1982-1995. The most uncomplicated procedure to run a self-test to read OBD1 codes is performing a “Key On Engine Running” (KOER) testįord Motor Company equips its vehicles with a self-diagnosing system, allowing for easier detection of faulty components and sensors without rushing to a mechanic.
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