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Last Modified: 9-16-2014 6.6 C Doc ID: RM000002VTM00UX Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1002; Lost Communication with Gateway Module; 2015 MY Tundra [08/2014 - ] DTC U1002 Lost Communication with Gateway Module DESCRIPTION The main body ECU stores this DTC when no signals can be received from the ECUs that have been memorized as those connected to the CAN MS bus. When the main body ECU receives a response signal from the ECUs connected to the CAN MS bus, the main body ECU recognizes and memorizes that the ECU is connected to the CAN MS bus. Based on this memorized data, the main body ECU monitors for malfunctions in the ECUs connected to the CAN MS bus when communicating with those ECUs. If the main body ECU cannot receive response signals from the ECUs that have been memorized as those connected to the CAN MS bus, the main body ECU determines that a malfunction exists. DTC CODE DTC DETECTION CONDITION TROUBLE AREA U1002 Lost communication with gateway module MS bus circuit Front power seat control ECU and switch LH CAN branch wire or connector Multiplex tilt and telescopic ECU CAN branch wire or connector Outer mirror control ECU assembly CAN branch wire or connector Combination meter assembly CAN main wire or connector Main body ECU (driver side junction block assembly) CAN main wire or connector Front power seat control ECU and switch LH Multiplex tilt and telescopic ECU Outer mirror control ECU assembly Combination meter assembly Main body ECU (driver side junction block assembly) No. 3 junction connector For vehicle with a seat memory. WIRING DIAGRAM CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1002;... |