DTC U1002: Lost Communication with Gateway Module (Main Body ECU) (07/2015 -): Description
- The main body ECU (multiplex network body ECU) will store this DTC when no signals are received from the ECUs that have been memorized as those that are connected to sub bus 1.
- When the main body ECU (multiplex network body ECU) receives a response signal from the ECUs connected to sub bus 1, the main body ECU (multiplex network body ECU) recognizes and memorizes that the ECU is connected to sub bus 1. Based on this memorized data, the main body ECU (multiplex network body ECU) monitors for malfunctions in the ECUs connected to sub bus 1 when communicating with those ECUs. If the main body ECU (multiplex network body ECU) does not receive response signals from the ECUs that have been memorized as those connected to sub bus 1, the main body ECU (multiplex network body ECU) determines that a malfunction exists.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1002 | The main body ECU (multiplex network body ECU) does not receive signals from all ECUs that have been memorized as those connected to sub bus 1. |
|
- *1: w/ Seat Position Memory System
- *2: w/ Power Tilt and Power Telescopic Steering Column System
- *3: w/ Power Trunk Lid System
- *4: except Radio and Display Type (w/ Parking Assist Monitor System with Parallel Parking Assist Function)
- *5: w/ Reverse Shift-linked Mirror
HINT:
This diagnosis procedure is for when DTC U1002 is output by the main body ECU (multiplex network body ECU) (Techstream display: Main Body).