To find out why the check engine light is on in a 1993 Acura Legend, you can use an OBD-I scanner or perform a diagnostic procedure by connecting a jumper wire between the service check connector terminals under the dashboard. This will allow you to retrieve any trouble codes from the engine control unit (ECU). Once you've identified and addressed the underlying issue, you can turn off the check engine light by disconnecting the battery for a few minutes or using the scanner to clear the codes.
take it to your mechanic so he can run a diagnostic.
When the check engine light is on, the computer sets a fault code. Most auto parts stores will check this code for free and tell you how to fix it.
It means the ECU has detected a problem with the emissions system.
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To check the check engine light codes on a 1988 Acura Legend, you need to locate the diagnostic connector under the dashboard near the driver's side. Use a jumper wire to connect the two terminals marked "TEN" and "GRD." Turn the ignition key to the "ON" position without starting the engine, and the check engine light will blink to indicate the trouble codes. Count the blinks to decipher the specific codes, which can then be referenced in a service manual for troubleshooting.
The check engine light comes on for numerous faults found by the computer. You will have to have the code pulled to find out why it is flashing. Most auto parts stores will do this at no cost.
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Check your engine, or refer to owners manual.
The check engine light comes on when you turn the key to the on position to show you that it is not burnt out. If it doesn't come on for that brief period then the bulb just needs to be replaced.
Replace bulbs Check the fuse Check the stop light switch
Ron barfield