If you successfully repaired all the DTC's, the ECM will turn the light off after several ignition/drive cycles and no DTC's have returned.
You need OBD2 reader or scanner to get the codes
To retrieve trouble codes for a 1989 Mazda MX-6, you can use the diagnostic connector located under the dashboard. First, turn the ignition key to the "ON" position without starting the engine. Then, use a jumper wire to connect terminals E1 and TE1 on the diagnostic connector. The check engine light will blink in a series of codes that correspond to specific trouble codes; count the blinks to interpret the codes according to the vehicle’s service manual.
You can obtain a full list of computer troubleshooting codes from most General Motors dealerships. You can also obtain the codes from a certified mechanic.
You will need a scanner to retrieve codes and it will have a trouble shooting chart to follow.
The DIY manual covers all the different trouble codes and is available for les than 30$ at your local autoparts store
On 1994 and older vehicles, you can manually pull the trouble codes. Check out a repair manual (Hayne's or Chilton's) at your local library - chapter 6 has all the details on how to do it; also what each code means and how to trouble shoot.
1995 and later Mazda B-Series Pick-ups incorporate the OBDII diagnostic system and you will need a scanner to retrieve the trouble codes. Some auto parts stores will scan free if the check engine light is on.
That happens when the computer detects a problem.. You need to have the computer checked for trouble codes.
Suggest you have it checked for trouble codes. The engine computer and airbag system should both have codes.
Go to your local public library and check out a repair manual (Chilton or Haynes) for your vehicle. Chapter six will give you detailed instructions and procedures for manually retrieving the trouble codes - also, what each trouble code means and how to troube-shoot.
Undo the battery negative cable for approx 20 minutes. That should remove all codes and trouble codes. They will however return if its a trouble code not diagnostic, if that makes any sense.
The first step is to check the vehicle for trouble codes. That will tell you what failure the computer saw when it defaulted to limp mode. You can then diagnose and repair the failure.The first step is to check the vehicle for trouble codes. That will tell you what failure the computer saw when it defaulted to limp mode. You can then diagnose and repair the failure.