OBD System Description: Notes
ECM in this vehicle has the following functions in compliance with OBD-II regulations.
- When the ignition mode of the keyless push start system in turned "ON" while the engine stopped, MIL (1) turns ON to check the MIL (1) and its circuit.
- When ECM detects a malfunction which adversely effects vehicle emission more than specified D/C, it displays message in information display (2) and turns on or flashes MIL in the combination meter (flashing only when detecting a misfire which can cause damage to the catalyst) and stores the DTC in its memory. If it detects normal conditions continuously for three driving cycles after detecting a malfunction, it turns off MIL after engine start in next D/C although DTC stored in its memory is retained as history DTC.
- For some malfunctions, ECM adopts the 2 D/C detecting logic to prevent erroneous detection. With this logic, MIL is turned on when the malfunction is detected in 2 consecutive D/Cs.
- Malfunctions detected by ECM are stored in its memory as pending DTC, confirmed DTC (current and history) and permanent DTC. The permanent DTC, among others, will be stored in the memory that cannot be manually erased. For the details, refer to description on PERMANENT DTC .
- When a malfunction is detected, engine and driving conditions at the moment the malfunction was detected are stored in ECM memory as freeze frame data. For the details, refer to description on FREEZE FRAME DATA .
- It is possible to communicate ECM via DLC (3) by using with SUZUKI scan tool (SUZUKI-SDT) (4) or CAN communication OBD-II generic scan tool.