Without Scan Tool

Check Engine Light:

EXTRACTING FAULT CODES:
If the "CHECK" engine light has been reported on, you can extract the fault codes as follows:
1. Turn the ignition on.
2. Pull down the passenger side carpet from under the dashboard to access the ECU.
3. Observe the LED on top of the ECU.

ECU Check Light:

ECU Check Light
4. The LED indicates a fault code by the blinking frequency. The LED can indicate multiple fault codes by blinking separate codes one after another.
- Fault codes 1 through 9 are indicated by individual short blinks.
- Fault codes 10 through 43 are indicated by a series of long and short blinks. One long blink equals ten short blinks.
- Add the long and short blinks together to determine the fault code.

Service Check Connector:

5. By connecting the two terminals of the check connector (located on passenger side under dashboard) with a jumper wire, the "CHECK" engine light will flash the same fault code(s) as the ECU LED. Don't forget to remove the jumper wire when you are done extracting the fault code(s).
6. Note the fault code(s).