Initial Inspection and Diagnostic Overview

DIAGNOSTIC FUNCTION

ON-BOARD DIAGNOSTICS

If an error occurs in the ECU or the SWS or CAN communication line which performs the SWS or CAN communication, the DTC is memorized in ETACS-ECU. The DTCs have 16 items. The DTCs are checked to connect scan tool MB991958 (M.U.T.-III sub assembly). The memorized DTCs are not erased even if the ignition switch is turned to the "LOCK" (OFF) position. The DTCs are erased to operate scan tool MB991958 (M.U.T.-III sub assembly).






NOTE:

- *1: When the DTC relating to the CAN communication error are output, make sure of the vehicle equipment. When the vehicle is not equipped with the system the ETACS-ECU communicates to, the DTC is always output. This is not abnormal.
- *2: The diagnostic trouble code for the past problem is not sent.