Defective emissions Testament burnished up your sprint's "test engine" warning.
To benefit determination pollution, the Environmental Safeguard Agency requires a common manner of On-Board Diagnostics-Second Period (OBD-II). The statute affected all vehicles sold in the USA genesis in One thousand nine hundred ninety six and extends to the exhibit. The OBD-II method does bounteous than due evaluation for Cadillac engine problems; it interacts with a conglomeration of sensors located throughout the Cadillac. This includes both the fueling and emissions systems. As with the engine, once a holy mess becomes persistent, the Cadillac's internal personal computer Testament information the action by assigning an OBD-II principle. To access these codes, you Testament entail OBD-II compliant hardware, adoration a handheld scanner.
Instructions
1. See up your Cadillac's news link connexion (DLC) online. The DLC is your connexion to your Cadillac's internal machine, which is otherwise called the powertrain charge module (PCM). But, the DLC Issue is not located in the equivalent spot on all cars. For instance, a Two thousand ten Escalade features it subservient the dashboard and on the far left. A Two thousand four XLR has it located subservient the steering revolve. In most cases, it is somewhere under the dashboard on the Chauffeur's side.
2. Connect your OBD-II scanner to your Cadillac's DLC Issue.7. Look up the OBD-II coding definitions. There will be two sets that you will need to locate.
Involve your important into your Cadillac's ignition and turn on the electrical operation. This Testament "wake up" the Cadillac's PCM. For some brands of diagnostic hardware, this is not Sufficiently, and you Testament duty to break the Cadillac's engine very.
4. Wait One to Two seconds as your scanner interfaces with your Cadillac's PCM. Provided your precise Trade-mark of scanner has been preset for auto-retrieving, then OBD-II codes should appear on the scanner's display. If you are using a scanner that was sold without such programing, you will need to key in a retrieval command yourself. OBD-II scanners are not all the same. They differ by brand, using different layouts and button configurations. Exact instructions can be found in the user's manual of your device.
5. Copy the trouble codes onto a separate bit of paper. You will not need to do this if your scanner features USB connectivity and machine driver software. Make a list, however, of all the codes on your scanner that do not begin with "C," "U" or "B." You are looking for "P" codes, which cover both the engine and the emissions systems.
6. Place a star or asterisks next to any "trouble" codes. Your scanner will have a method of differentiating between "trouble" and "pending" codes. "Trouble" codes are frequent problems. They are so frequent that your PCM has activated the check engine light as a way of getting your attention. "Pending" codes have happened less often, and they do not activate any dashboard warning lights.
The Harbour contains slots to accomodate a 16-prong plug, which Testament be latest of your scanner's diagnostic cable.3. Turn on the scanner. All post-1996 vehicles employ generic OBD-II codes. General Motors (GM) has additional codes meant to supplement the OBD-II standardized ones. Generic codes are included in most OBD-II scanner user's handbooks. GM codes can be found online at no cost, but they are also listed in model-specific and year-specific Haynes repair manuals. None of the GM owner's manuals will include either set of codes.
8. Read through the coding definitions. Not all of them deal with emissions or the fueling system. Underline the codes that do relate, like the ones describing exhaust gas redirection problems. Your list should now offer a series of priorities, should you choose to troubleshoot the problems yourself. If you decide to involve a mechanic, your list will have saved you for paying diagnostic fees.
