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DIAGNOSIS CONTROLLER AREA NETWORK (CAN) 54C-238 (2) Connect special tool MB992045 (A/T check harness) to the A/T-ECU and the wiring harness, and measure the (3) Turn the ignition switch to the "LOCK" (OFF) position. NOTE: When diagnosing CAN BUS on vehicles with manual transmission (M/T) disregard A/T-ECU and it’s wir- CAUTION Disconnect the negative battery terminal. For details refer . (4) Disconnect the negative battery terminal. (A/T check harness) connector terminal 14 and body OK: 1 k Ω or more Q: Does the resistance measure 1 k Ω or more? YES : If the resistance measures 1 k Ω or more, diagnose CAN bus lines thoroughly by referring to NO : If the resistance measures less than 1 k Ω, replace the A/T-ECU. 16DB498A TEST SPECIAL TOOL MB992045 A/T- ECU MEASURE AT THIS CONNECTOR SPECIAL TOOL MB992045 CONNECTOR |