ON-BOARD DIAGNOSTIC OUTLINE [CAN SYSTEM]

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• The on-board diagnostic function is incorporated into the PCM, ABS (ABS/TCS) HU/CM (with ABS (ABS/TCS)), DSC HU/CM (with DSC), and instrument cluster. This function can narrow down CAN system malfunction locations.

• The on-board diagnostic function consists of the following functions: a failure detection function, which detects malfunctions in CAN system-related parts; a memory function, which stores detected DTCs; a self-malfunction diagnostic function, which indicates system malfunctions using DTCs and warning lights; and a PID/data monitoring function, which verifies the input/output condition of specific input/output signals being read out.

• Using an SST (WDS or equivalent), DTCs can be read out and deleted, and the PID/data monitoring function can be activated.

• The CAN system has a fail-safe function. When a malfunction occurs in CAN system, the transmission module sends a warning signal and the receiving module illuminates the warning light.