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SRS AIR BAG DIAGNOSIS TSB Revision SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-343 DTC U0141: ETACS CAN Timeout CAUTION • If the DTC U0141 is set in the occupant classi- fication-ECU, always diagnose the CAN main • When replacing the ECU, always check that the communication circuit is normal. . DIAGNOSTIC FUNCTION If the signal from ETACS-ECU cannot be received, . JUDGMENT CRITERIA Because of the CAN-B bus circuit malfunction, if . TROUBLESHOOTING HINTS • The CAN bus line may be defective • The ETACS-ECU may be defective • The occupant classification-ECU may be defec- tive DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: Vehicles Communication Interface (V.C.I.) • MB991827: M.U.T.-III USB Cable • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system) STEP 1. Using scan tool MB991958, diagnose the CAN bus CAUTION To prevent damage to scan tool MB991958, always turn the ." (2) Turn the ignition switch to the "ON" position. YES : Go to Step 2. ). AC608435 Data link connector MB991827 MB991824 MB991910 AB |