On-Board Diagnostic System Description

ECM in this vehicle in compliance with OBD-II regulations, has following functions:

• When ignition switch is turned to ON position, MIL illuminates as a bulb check of the MIL.
• When ECM detects a malfunction which would have an adverse effect on vehicle emissions while engine is running, MIL flashes (flashes only when detecting a misfire which can cause damage to the catalyst). ECM stores DTC in memory. If after 3 driving cycles ECM no longer detects condition that set DTC, MIL is turned off. DTC will remain stored in memory.
• As a condition for detecting a malfunction, in some areas system being monitored by ECM, 2 drive cycle detection logic is adopted to prevent erroneous detection.
• When a malfunction is detected, engine and driving conditions then are stored in ECM memory as freeze frame data. (For the details, refer to description on Freeze frame data.)
• It is possible to communicate with ECM by using Suzuki scan tool, or OBD-II generic scan tools which are in compliance with SAE J1978. (Diagnostic information can be accessed by using a scan tool.)