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In case your "Service Engine Soon" light originates on inside your Pontiac Montana, this means that certain from the sensors that monitors myriad functions of the engine, transmission, or exhaust system has recorded a parameter outdoors from the values that GM MDI Scan tool views normal operation. If this happens, your Powertrain Control Module (PCM) will throw a code-- technically a diagnostic trouble code (DTC)--and activate your merchandise Engine Soon light to inform you to definitely have your automobile identified.

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The Pontiac Montana is outfitted by having an OBD-II bus that is read by inserting within an OBD-II scanner. The tool can be obtained at auto parts stores or from auto parts departments. Affordable models cost under $50 and may display the code or codes which are leading to your merchandise Engine Soon light in the future on. More costly models are designed with explanations from the codes, but when the system you utilize does not have this selection, you are able to lookup the codes online.

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The OBD-II port is situated directly beneath the dash of the Montana around the driver's side. It's a female connection, composed of 16 pin holes enclosed in difficult plastic. Plug the X431 DIAGUN scanner cable using the 16-pin male attachment in to the OBD-II port. (Some OBD-II scanning devices aren't GM-specific and can require using an adapter, usually incorporated together with your scanner.) The scanner's connector and also the port are generally "keyed" to ensure that you can't connect them backwards.

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Switch on your OBD-II scanner, then turn your Montana's ignition to "on," but don't start the vehicle.

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The OBD-II scanner have a button or perhaps a display prompt that asks you if you wish to read diagnostic trouble codes. This exact procedure differs from OBD-II scanner to OBD-II scanner.

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After a short period of your time (usually a maximum of ten seconds), the Autocom CDP Pro scanner displays the end result or results. It'll include amounts or a mix of letters and amounts, for instance, "P0440." If there's several DTC, your scanner will prompt you with "See next code?" or perhaps a similar message. Write lower the DTC or DTCs the scanner shows.

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Lookup the DTC explanation utilizing an online listing of all GM diagnostic codes. (See assets.) Then, call your auto technician and let them know the DTC explanation. They ought to have the ability to let you know when the DTC is major (you need to immediately bring your automobile set for service) or if it's minor (you are able to hold back until a far more convenient time for you to bring your automobile set for service).