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DIAGNOSIS TSB Revision ACTIVE SKID CONTROL SYSTEM (ASC) 35C-215 DTC U1417: Variant coding value invalid (includes faulty installation) CAUTION • If diagnostic trouble code No. U1417 is set in ASC-ECU, always diagnose the CAN bus lines. If there is any fault • Whenever the ECU is replaced, ensure that the commu- nication circuit is normal. • When diagnostic trouble code No. U1417 is set in ASC-ECU, the diagnostic trouble code may also be set • When the hydraulic unit (integrated with ASC-ECU) is replaced, after turning the ignition switch ON and OFF , and .) . CIRCUIT OPERATION ASC-ECU receives the vehicle information stored in the . DTC SET CONDITIONS ASC-ECU communicates with ETACS-ECU via CAN bus lines. . PROBABLE CAUSES • ETACS-ECU malfunction • Engine ECU malfunction • ETACS-ECUs have been interchanged between two vehi- cles. • ASC-ECU malfunction • Noise interference • ASC-ECUs have been interchanged between two vehicles. DIAGNOSIS Required Special Tools: • MB991958 Scan Tool (M.U.T.-III Sub Assembly) • MB991824: Vehicle Communication Interface (V.C.I.) • MB991827 M.U.T.-III USB Cable • MB991910 M.U.T.-III Main Harness A |