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DIAGNOSIS TSB Revision ELECTRONIC CONTROL AWD 27C-15 CAUTION If there is any problem in the CAN bus lines, an . OPERATION The current flowing the coupling coil is monitored, . DTC SET CONDITIONS If the following conditions are met when the system • Electronic control coupling solenoid current moni- tor value: 6 A or more (deviated from the normal . TROUBLESHOOTING HINTS Current trouble • Damaged harness wires and connector (Short to ground between AWD-ECU and the electronic • AWD-ECU internal error • Short circuit in the coupling coil Past trouble • Intermittent wiring harness or connector failure NOTE: For diagnosis procedures, refer to "How − How to Use Troubleshooting/How to Treat Past Trou- • Intermittent electronic control coupling failure (solenoid failure) 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 3. − Troubleshooting/CAN Bus Diagnostics Table ). On completion, go to Step 2. AC901228AB C-315 C-309 ETACS-ECU Connectors: C309, C-315 |