Ensure battery voltage is greater than 11 volts and throttle valve is fully closed. Place transmission or transaxle in Neutral and turn off all accessory switches.
To enter diagnostic mode, turn ignition on. DO NOT start engine. Install jumper wire between terminals of engine check connector. See Fig 1.

Fig 1: Installing Engine Check Connector Jumper Wire
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Count number of flashes from "CHECK ENGINE" light. If system is operating properly (with no codes), "CHECK ENGINE" light will blink continuously and evenly.
On all models, a code will be identified by a .5 second flash on and off for the first number. A 1.5 second pause will occur followed by the second number. See Figure.
If more than one code is stored, a 2.5 second pause will occur prior to the flashing of the second code. Once all codes have been displayed, a 4.5 second pause will occur and code(s) will repeat.
On all models, trouble codes are given from smallest value in order to largest value. After code(s) are retrieved, remove jumper wire to exit diagnostic mode.
Compare trouble code to that listed to locate probable cause. See appropriate TROUBLE CODE IDENTIFICATION and TROUBLE CODES & PROBABLE CAUSE tables.

CAUTION: Ensure trouble codes are cleared after performing repair. Road test and recheck that trouble code does not exist.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Retrieving Trouble Codes: Notes