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DIAGNOSIS TSB Revision ELECTRONIC CONTROL AWD 27C-67 DTC U0141: ETACS CAN time-out CAUTION • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this • Before replacing the ECU, ensure that the communication circuit is normal. . OPERATION AWD-ECU receives the data (such as drive mode . DTC SET CONDITIONS If the following conditions are met when the system • IG1 power supply voltage: 8 V or more • The signal output from ETACS-ECU cannot be received. . TROUBLESHOOTING HINTS Current trouble • Wiring harness or connector failure in the CAN bus lines between ETACS-ECU and AWD-ECU • Malfunction of ETACS-ECU • AWD-ECU malfunction Past trouble • Refer to "How to treat past trouble" (GROUP 00 − How to Use Troubleshooting/How to Treat Past ) for proceeding the diagnostics. Diagnose mainly wiring harness or connector fail- − How to Use Trou- bleshooting/How to Cope with Intermittent ). You can narrow down the possible cause of the trouble by referring to the −
CAN Bus Line Diagnostic Flow DIAGNOSIS • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: Vehicle Communication Interface • MB991827: M.U.T.-III USB Cable • MB991910: M.U.T.-III Main Harness A STEP 1. Scan tool MB991958 CAN bus diagnostics YES : Go to Step 2. − Troubleshooting/CAN Bus Diagnostics Table ), Then go to Step 2. STEP 2. Scan tool MB991958 data list ). • Item 09: CAN system (ETACS) Q: Is the check result normal? |