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2. ALDL - Wikipedia

   en.wikipedia.org/wiki/ALDL

   It is able to do this by flashing a check engine light on the car's instrument panel and storing the information about a malfunction in its memory. When taken to a service center, the ECM uses this same light to "talk" to the mechanic through a flashing code that indicates where the problem is. On Cadillacs, the proper code is digitally displayed.

3. Check engine light - Wikipedia

   en.wikipedia.org/wiki/Check_engine_light

   A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system used to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).

4. Tell-tale (automotive) - Wikipedia

   en.wikipedia.org/wiki/Tell-tale_(automotive)

   A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.

5. Letter to the Editor: Check engine light 'blinking' for ... - AOL

   www.aol.com/letter-editor-check-engine-light...

   Nick Curry, a 27-year city employee who works in the street department, filed the suit, alleging conspiracy and harassment.The “check engine light” has been blinking for nearly nine months on ...

6. On-board diagnostics - Wikipedia

   en.wikipedia.org/wiki/On-board_diagnostics

   Some Honda engine computers are equipped with LEDs that light up in a specific pattern to indicate the DTC. General Motors, some 1989–1995 Ford vehicles (DCL), and some 1989–1995 Toyota/Lexus vehicles have a live sensor data stream available; however, many other OBD-I equipped vehicles do not.

7. Powertrain control module - Wikipedia

   en.wikipedia.org/wiki/Powertrain_control_module

   A PCM from a 1996 Chevrolet Beretta. A power-train control module, abbreviated PCM, is an automotive component, a control unit, used on motor vehicles. It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the ...