With Manufacturer'S Scan Tool
HOW TO READ DIAGNOSTIC TROUBLE CODES1. Turn the ignition switch to the "ON" position while pushing the "COAST/SET" switch. Then, within one second, release the "COAST/SET" switch and push the "ACC/RES" switch.
2. Read a diagnostic trouble code by observing the flash display pattern of the "CRUISE" indicator light in the combination meter.
NOTE: Other on-board diagnostic items are also output as voltage waveforms corresponding to diagnostic trouble code numbers.
HOW TO ERASE DIAGNOSTIC TROUBLE CODES
Disconnect the negative (-) battery cable.