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DIAGNOSIS CONTROLLER AREA NETWORK (CAN) 54D-402 STEP 39. Resistance measurement at A-04 CAUTION A digital multimeter should be used. For details (1) Connect special tool MB991974 to the ASC-ECU connector, and measure by using the check (2) Resistance between special tool MB991974 check connector terminal Nos. 11 and 15. OK: 1 k Ω or more Q: Is the check result normal? YES : <1 k Ω or more> Follow diagnostic item 20, Diagnose CAN bus lines thoroughly. Refer . NO : <Less than 1 k Ω> Replace the ASC-ECU. STEP 40. Resistance measurement at the A-07 . CAUTION A digital multimeter should be used. For details . CAUTION The test wiring harness should be used. For (1) Disconnect the joint connector (CAN1) and the intermediate connector, and measure at the (2) Ignition switch: OFF (LOCK) CAUTION When measuring the resistance, disconnect the (3) Ensure that the negative battery terminal is AC310398 AJ Connector: A-04 <RHD> A-04 Harness side AC304012 MB991984 Check connector AC ASC-ECU AC204740 1 3 4 5 6 7 8 9 10 11 2 13 12 16 17 18 19 20 21 22 23 24 15 25 14 26 AC204740 AC204740 AC204740 AC204740BD Special tool MB991974: Check AC302572AD Connector: A-07 Harness side AC310628AB Connector: C-125 <RHD> |