What Causes Loss of Communication with the Transmission Control Module?

[BrookeAnn]

This is caused by a break in the CAN bus communication line. Here are the relevant details: 1. Line break: This refers to a break in the communication line between the engine control unit and the automatic transmission control unit. It is necessary to check whether the wiring at the connectors of these two control units is secure, and whether there is any short circuit or poor contact. A multimeter should be used for inspection. Repairing the wiring will resolve the issue. Timely maintenance and repair are essential to ensure stable, comfortable, and safe driving. 2. Instability: If the communication between the engine control module and the automatic transmission is interrupted or unstable, occurring intermittently, the two will not be able to coordinate properly. The transmission will then enter a fault mode and remain in neutral, causing the vehicle to be unable to continue driving.