Diagnostic Function

ON-BOARD DIAGNOSTICS
If the ABS-ECU detects any problem in the CAN communication line or the ECUs, which the ABS-ECU is communicating with, it stores a diagnostic trouble code. The DTCs have 26 items. The DTCs can be confirmed by connecting scan tool MB991958 (M.U.T.-III sub assembly). The stored DTCs are not erased even after the ignition switch has been turned to the "LOCK" (OFF) position, or the battery has been disconnected. The DTCs can be erased by operating scan tool MB991958 (M.U.T.-III sub assembly).