On-Board Diagnostics System Description

ECM in this vehicle in compliance with On-Board Diagnostic-II (OBD-II) regulations, has following functions:

• When ignition switch is turned to ON position, Malfunction Indicator Light (MIL) illuminates as a MIL bulb check-out. MIL should turn OFF when engine is running or ignition switch is turned to LOCK position.
• When ECM (PCM) detects a malfunction which would have an adverse or severe damage to vehicle emissions while engine is running, MIL flashes (flashes only when detecting a misfire which can cause damage to the catalyst). ECM (PCM) stores DTC(s) in memory. If after 3 driving cycles ECM (PCM) 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 (PCM), 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 (PCM) memory as freeze frame data. For freeze frame data details and description, see FREEZE FRAME DATA  .
• It is possible to communicate with ECM (PCM) by using SUZUKI scan tool, or OBD-II generic scan tool which are in compliance with SAEJ1978. (Diagnostic information can be accessed by using a scan tool).