Tests W/Codes: Self-Diagnosis

When a system fault occurs, "CHECK ENGINE" light on dash will illuminate to inform driver a problem exists. Light will remain on until fault goes away or system is serviced. If fault goes away (system parameter returns to normal operation) before it is serviced, "CHECK ENGINE" light will go out; however, the related fault code will still remain in control unit memory until cleared. Stored codes may later be accessed and identified by counting flashes of the "CHECK ENGINE" light. See Fig 1 .

Fig 1: Suzuki "CHECK ENGINE" Light Pulse Pattern Identification

Courtesy of SUZUKI OF AMERICA CORP.